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Maximum Temperature
Maximum Pressure @ Temperature
Hex Size
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Seal Material
Export Control Classification Number (ECCN)
DFARS Specialty Metals
Sights
Brass with Glass Window
 |  |  |  |
BSPP Thread, For Clear Liquids | BSPP Thread For Dark Liquids | NPTF Thread, For Clear Liquids | NPTF Thread For Dark Liquids |
For Clear Liquids | For Dark Liquids | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | Each | ||||
NPTF Male | ||||||||||||
| 1/4 | 1/4" | 5/8" | 150 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1210K21 | 000000 | ——— | 0 | ||
| 1/4 | 1/4" | 5/8" | 675 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1322K71 | 00000 | ——— | 0 | ||
| 3/8 | 3/8" | 3/4" | 100 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1210K22 | 0000 | 1210K32 | 00000 | ||
| 3/8 | 3/8" | 3/4" | 415 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1322K72 | 00000 | 1322K82 | 00000 | ||
| 1/2 | 1/2" | 7/8" | 100 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1210K23 | 0000 | 1210K33 | 00000 | ||
| 1/2 | 1/2" | 7/8" | 250 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1322K73 | 00000 | 1322K83 | 00000 | ||
| 3/4 | 3/4" | 1 1/8" | 60 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1210K24 | 00000 | 1210K34 | 00000 | ||
| 3/4 | 3/4" | 1 1/8" | 200 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1322K74 | 00000 | 1322K84 | 00000 | ||
| 1 | 1" | 1 3/8" | 60 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1210K25 | 00000 | 1210K31 | 00000 | ||
| 1 | 1" | 1 3/8" | 100 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1322K75 | 00000 | 1322K85 | 00000 | ||
| 1 1/4 | 1 1/8" | 1 3/4" | 25 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1210K26 | 00000 | 1210K36 | 00000 | ||
| 1 1/4 | 1 1/8" | 1 3/4" | 60 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1322K76 | 00000 | 1322K86 | 00000 | ||
| 1 1/2 | 1 3/8" | 2" | 25 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1210K27 | 00000 | 1210K37 | 00000 | ||
| 1 1/2 | 1 3/8" | 2" | 50 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1322K77 | 00000 | 1322K87 | 00000 | ||
| 2 | 1 7/8" | 2 1/2" | 10 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1210K28 | 00000 | 1210K38 | 00000 | ||
| 2 | 1 7/8" | 2 1/2" | 20 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | 1322K78 | 000000 | 1322K88 | 000000 | ||
BSPP Male | ||||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6395T2 | 00000 | 6395T1 | 00000 | ||
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6395T4 | 00000 | 6395T3 | 00000 | ||
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6395T6 | 00000 | 6395T5 | 00000 | ||
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6395T8 | 00000 | 6395T7 | 00000 | ||
Steel with Glass Window
| | | |
NPT Thread, For Clear Liquids | NPT Thread For Dark Liquids | NPTF Thread, For Clear Liquids | NPTF Thread For Dark Liquids |
For Clear Liquids | For Dark Liquids | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Each | Each | ||||
NPT Male | |||||||||||
With Fused Window | |||||||||||
| 1/2 | 1/2" | 15/16" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | 3277K14 | 00000 | 3277K34 | 000000 | ||
| 1 | 1" | 1 3/8" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | 3277K18 | 00000 | 3277K38 | 00000 | ||
| 1 1/4 | 1 1/4" | 1 3/4" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | 3277K23 | 00000 | 3277K43 | 00000 | ||
| 1 1/2 | 1 1/2" | 2" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | 3277K25 | 00000 | 3277K45 | 00000 | ||
| 2 | 2" | 2 1/2" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | 3277K27 | 00000 | 3277K47 | 00000 | ||
NPTF Male | |||||||||||
With Fused Window | |||||||||||
| 3/8 | 3/8" | 3/4" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | 3277K12 | 00000 | 3277K32 | 00000 | ||
| 3/4 | 3/4" | 1 1/16" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | 3277K16 | 00000 | 3277K36 | 00000 | ||
Aluminum with Glass Window
| |
BSPP Thread, For Clear Liquids | BSPP Thread For Dark Liquids |
Aluminum sights have good corrosion resistance.
BSPP Thread—Sights with BSPP (British Standard Pipe Parallel) threads are often used with imported equipment.
For Dark Liquids—Sights for dark liquid have a reflector that makes liquid easy to see, especially in low-light conditions.
For Clear Liquids | For Dark Liquids | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | Each | ||||
BSPP Male | ||||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3434K11 | 000000 | 3434K32 | 000000 | ||
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3434K13 | 00000 | 3434K33 | 00000 | ||
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3434K15 | 00000 | 3434K35 | 00000 | ||
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3434K17 | 00000 | 3434K37 | 00000 | ||
| 1 1/4 | 1 1/4" | 1 3/4" | 180 psi @ 70° F | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3434K19 | 00000 | 3434K39 | 00000 | ||
303 Stainless Steel with Glass Window
| | | |
BSPP Thread For Dark Liquids | BSPP Thread For Dark Liquids | NPT Thread, For Clear Liquids | NPT Thread For Dark Liquids |
For Clear Liquids | For Dark Liquids | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | Each | ||||
NPT Male | ||||||||||||
| 1/4 | 1/4" | 5/8" | 125 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6490T11 | 000000 | ——— | 0 | ||
| 3/8 | 3/8" | 3/4" | 125 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6490T12 | 00000 | 6490T19 | 000000 | ||
| 1/2 | 5/8" | 1" | 125 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6490T13 | 00000 | 6490T21 | 00000 | ||
| 3/4 | 3/4" | 1" | 125 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6490T14 | 00000 | 6490T22 | 00000 | ||
| 1 | 1" | 1 3/8" | 100 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6490T15 | 00000 | 6490T23 | 00000 | ||
| 1 1/4 | 1 1/4" | 1 3/4" | 50 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6490T16 | 00000 | 6490T24 | 00000 | ||
| 1 1/2 | 1 1/2" | 2" | 50 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6490T17 | 00000 | 6490T25 | 00000 | ||
| 2 | 2" | 2 1/2" | 50 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 6490T18 | 000000 | 6490T26 | 000000 | ||
BSPP Male | ||||||||||||
| 3/8 | 3/8" | 3/4" | 725 psi @ 70° F | 0 to 350 | Water, Hydraulic Fluid, Diesel Fuel | Fluoroelastomer | 6396T1 | 00000 | 6396T31 | 00000 | ||
| 1/2 | 1/2" | 7/8" | 725 psi @ 70° F | 0 to 350 | Water, Hydraulic Fluid, Diesel Fuel | Fluoroelastomer | 6396T2 | 00000 | 6396T32 | 00000 | ||
| 3/4 | 5/8" | 1 1/8" | 360 psi @ 70° F | 0 to 350 | Water, Hydraulic Fluid, Diesel Fuel | Fluoroelastomer | 6396T3 | 00000 | 6396T33 | 00000 | ||
| 1 | 1" | 1 3/8" | 290 psi @ 70° F | 0 to 350 | Water, Hydraulic Fluid, Diesel Fuel | Fluoroelastomer | 6396T4 | 00000 | 6396T34 | 00000 | ||
Shatter-Resistant Sights
Plastic with Plastic Window
 |
Pipe Size | Thread Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
NPT Male | |||||||||||
With One-Piece Construction | |||||||||||
| 1/2 | — | 1/2" | 1" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K11 | 00000 | ||
| 3/4 | — | 5/8" | 1 1/4" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K12 | 0000 | ||
| 1 | — | 7/8" | 1 1/2" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K13 | 00000 | ||
BSPP Male | |||||||||||
With One-Piece Construction | |||||||||||
| 1/4 | — | 3/8" | 5/8" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K31 | 0000 | ||
| 3/8 | — | 3/8" | 3/4" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K32 | 0000 | ||
| 1/2 | — | 1/2" | 7/8" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K33 | 0000 | ||
| 3/4 | — | 3/4" | 1" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K34 | 0000 | ||
| 1 | — | 1" | 1 3/8" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K35 | 0000 | ||
| 1 1/4 | — | 1 1/8" | 1 5/8" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K36 | 00000 | ||
Metric Male | |||||||||||
With One-Piece Construction | |||||||||||
| — | M16 × 1.5 mm | 7/16" | 3/4" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K111 | 0000 | ||
| — | M20 × 1.5 mm | 9/16" | 7/8" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K112 | 0000 | ||
| — | M25 × 1.5 mm | 11/16" | 1 1/16" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K113 | 0000 | ||
| — | M27 × 1.5 mm | 13/16" | 1 1/16" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K114 | 0000 | ||
| — | M30 × 1.5 mm | 7/8" | 1 3/16" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K115 | 0000 | ||
| — | M40 × 1.5 mm | 1 3/16" | 1 5/8" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K116 | 00000 | ||
UN/UNF (SAE Straight) Male | |||||||||||
With One-Piece Construction | |||||||||||
| — | 3/4"-16 | 1/2" | 7/8" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K117 | 0000 | ||
| — | 1 1/16"-12 | 3/4" | 1 3/16" | Not Rated | -20 to 210 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 5095K118 | 00000 | ||
High-Pressure Sights
Nickel-Plated Steel with Glass Window
 |  |
NPT Thread, For Clear Liquids | NPT Thread For Dark Liquids |
For Clear Liquids | For Dark Liquids | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Each | Each | ||||
NPT Male | |||||||||||
With Fused Window | |||||||||||
| 1/4 | 3/8" | 5/8" | 2,000 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel | 1079K18 | 000000 | ——— | 0 | ||
| 3/8 | 3/8" | 3/4" | 1,850 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel | 1079K11 | 00000 | 1079K41 | 000000 | ||
| 1/2 | 1/2" | 15/16" | 1,750 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel | 1079K12 | 00000 | 1079K42 | 00000 | ||
| 3/4 | 3/4" | 1 1/16" | 1,500 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel | 1079K13 | 00000 | 1079K43 | 00000 | ||
| 1 | 1" | 1 3/8" | 1,250 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel | 1079K14 | 00000 | 1079K44 | 00000 | ||
| 1 1/4 | 1 1/8" | 1 3/4" | 1,000 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel | 1079K15 | 00000 | 1079K45 | 00000 | ||
| 1 1/2 | 1 3/8" | 2" | 750 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel | 1079K16 | 00000 | 1079K46 | 00000 | ||
| 2 | 1 7/8" | 2 1/2" | 500 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel | 1079K17 | 00000 | 1079K47 | 00000 | ||
2205 Stainless Steel with Glass Window
|
NPT Thread, For Clear Liquids |
2205 stainless steel sights are more corrosion resistant than nickel-plated steel sights.
For Clear Liquids | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Each | |||
NPT Male | |||||||||
With Fused Window | |||||||||
| 1/4 | 3/8" | 13/16" | 1,400 psi @ 70° F | -20 to 536 | Water, Hydraulic Fluid, Diesel Fuel | 5207K47 | 0000000 | ||
| 1/2 | 1/2" | 1 1/16" | 1,400 psi @ 70° F | -20 to 536 | Water, Hydraulic Fluid, Diesel Fuel | 5207K42 | 000000 | ||
| 3/4 | 3/4" | 1 7/16" | 1,400 psi @ 70° F | -20 to 536 | Water, Hydraulic Fluid, Diesel Fuel | 5207K43 | 000000 | ||
| 1 | 7/8" | 1 5/8" | 1,400 psi @ 70° F | -20 to 536 | Water, Hydraulic Fluid, Diesel Fuel | 5207K44 | 000000 | ||
| 1 1/2 | 1 1/8" | 2 3/16" | 1,400 psi @ 70° F | -20 to 536 | Water, Hydraulic Fluid, Diesel Fuel | 5207K49 | 000000 | ||
| 2 | 1 3/8" | 2 3/4" | 1,400 psi @ 70° F | -20 to 536 | Water, Hydraulic Fluid, Diesel Fuel | 5207K46 | 000000 | ||
High-Visibility Sights
Brass with Glass Window
 |
Brass sights have good corrosion resistance.
For Dark Liquids | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | |||
NPTF Male | ||||||||||
With Indicator Ball | ||||||||||
| 3/8 | 7/16" | 3/4" | 100 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K71 | 000000 | ||
| 3/8 | 7/16" | 3/4" | 415 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K78 | 00000 | ||
| 1/2 | 9/16" | 7/8" | 100 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K72 | 00000 | ||
| 1/2 | 9/16" | 7/8" | 250 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K79 | 00000 | ||
| 3/4 | 3/4" | 1 1/8" | 60 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K73 | 00000 | ||
| 3/4 | 3/4" | 1 1/8" | 200 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K81 | 00000 | ||
| 1 | 15/16" | 1 7/16" | 60 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K74 | 00000 | ||
| 1 | 15/16" | 1 7/16" | 100 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K82 | 00000 | ||
| 1 1/4 | 1 1/8" | 1 3/4" | 60 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K83 | 00000 | ||
| 1 1/4 | 1 3/16" | 1 3/4" | 25 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K75 | 00000 | ||
| 1 1/2 | 1 3/8" | 2" | 50 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K84 | 00000 | ||
| 1 1/2 | 1 7/16" | 2" | 25 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K76 | 00000 | ||
| 2 | 1 7/8" | 2 1/2" | 10 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K77 | 000000 | ||
| 2 | 1 7/8" | 2 1/2" | 20 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3277K85 | 000000 | ||
Steel with Glass Window
|
UN/UNF (SAE Straight) Thread—UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
For Dark Liquids | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Specs. Met | Each | |||
NPT Male | ||||||||||||
With Fused Window and Indicator Ball | ||||||||||||
| 1/2 | — | 1/2" | 1" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | — | — | 3277K54 | 000000 | ||
| 1 | — | 1" | 1 3/8" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | — | — | 3277K58 | 00000 | ||
| 1 1/4 | — | 1 1/4" | 1 3/4" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | — | — | 3277K63 | 00000 | ||
| 1 1/2 | — | 1 1/2" | 2" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | — | — | 3277K65 | 00000 | ||
| 2 | — | 2" | 2 1/2" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | — | — | 3277K67 | 00000 | ||
NPTF Male | ||||||||||||
With Fused Window and Indicator Ball | ||||||||||||
| 3/8 | — | 3/8" | 3/4" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | — | — | 3277K52 | 00000 | ||
| 3/4 | — | 3/4" | 1" | 125 psi @ 70° F | -40 to 250 | Water, Hydraulic Fluid, Diesel Fuel | — | — | 3277K56 | 00000 | ||
UN/UNF (SAE Straight) Male | ||||||||||||
With Indicator Ball | ||||||||||||
| — | 3/4"-16 | 9/16" | 7/8" | 75 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | SAE J1926/3 | 3277K87 | 00000 | ||
| — | 1 1/16"-12 | 3/4" | 1 1/4" | 75 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | SAE J1926/3 | 3277K88 | 00000 | ||
| — | 1 5/16"-12 | 15/16" | 1 1/2" | 75 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | SAE J1926/3 | 3277K89 | 00000 | ||
| — | 1 7/8"-12 | 1 7/16" | 2" | 20 psi @ 70° F | -40 to 180 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | SAE J1926/3 | 3277K91 | 00000 | ||
Weld-On Sights
304 Stainless Steel with Glass Window
 |  |
With Bolt-On Window | With Bolt-On Window (Unassembled) |
For Hole Dia. | OD | Window Dia. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
With Bolt-On Window | ||||||||||
| 4 11/16" | 5" | 3 1/2" | 60 psi @ 70° F | -40 to 300 | Water, Hydraulic Fluid | Silicone Rubber | 4201K32 | 0000000 | ||
316L Stainless Steel with Glass Window
 |  |
With Screw-Together Window (Unassembled) | With Screw-Together Window |
316L stainless steel sights are more corrosion resistant than 304 stainless steel sights.
With Screw-Together Window—Sights with a screw-together window make it easier to access your tank and clean the window than sights with a bolt-on window. To install these sights, place the body in a hole on your tank wall and weld it. Then twist on the window and tighten with a spanner wrench.
DIN 11851—DIN 11851 rated sights meet dairy fitting standards.
For Hole Dia. | OD | Window Dia. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Specs. Met | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
With Screw-Together Window | |||||||||||
| 2" | 3 5/8" | 2" | 150 psi @ 70° F | -20 to 390 | Water, Hydraulic Fluid, Compressed Air | Silicone Rubber | DIN 11851 | 4814K54 | 0000000 | ||
| 2 1/2" | 4 7/16" | 2 1/2" | 150 psi @ 70° F | -20 to 390 | Water, Hydraulic Fluid, Compressed Air | Silicone Rubber | DIN 11851 | 4814K55 | 000000 | ||
| 3 1/8" | 5" | 3 1/8" | 150 psi @ 70° F | -20 to 390 | Water, Hydraulic Fluid, Compressed Air | Silicone Rubber | DIN 11851 | 4814K56 | 000000 | ||
| 4" | 5 13/16" | 4" | 150 psi @ 70° F | -20 to 390 | Water, Hydraulic Fluid, Compressed Air | Silicone Rubber | DIN 11851 | 4814K57 | 000000 | ||
| 5" | 7" | 5" | 90 psi @ 70° F | -20 to 390 | Water, Hydraulic Fluid, Compressed Air | Silicone Rubber | DIN 11851 | 4814K58 | 00000000 | ||
Through-Wall Sights
Aluminum with Glass Window
 |  |
For Clear Liquids | For Dark Liquids |
For Dark Liquids—Sights for dark liquid have a reflector that makes liquid easy to see, especially in low-light conditions.
For Clear Liquids | For Dark Liquids | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Hole Dia. | Window Dia. | Hex Size | For Max. Tank Wall Thk. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Includes | Each | Each | ||||
| 3/4" | 1/2" | 7/8" | 1/4" | 50 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 1116K21 | 000000 | 1116K31 | 000000 | ||
| 1" | 3/4" | 1 1/8" | 1/4" | 50 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 1116K22 | 00000 | 1116K32 | 00000 | ||
| 1 1/4" | 1" | 1 3/8" | 1/4" | 25 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 1116K23 | 00000 | 1116K33 | 00000 | ||
| 1 7/8" | 1 3/8" | 2" | 1/4" | 25 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 1116K24 | 00000 | 1116K34 | 00000 | ||
EachIn stock  Select a compatible file type: Parasolid | ||||||||||||||
| 2 3/8" | 1 7/8" | 2 5/8" | 1/4" | 10 psi @ 70° F | -40 to 180 | Water, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 1116K25 | 00000 | 1116K35 | 00000 | ||
303 Stainless Steel with Glass Window
| |
For Clear Liquids | For Dark Liquids |
303 stainless steel sights are more corrosion resistant than aluminum sights.
For Dark Liquids—Sights for dark liquid have a reflector that makes liquid easy to see, especially in low-light conditions.
For Clear Liquids | For Dark Liquids | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Hole Dia. | Window Dia. | Hex Size | For Max. Tank Wall Thk. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Includes | Each | Each | ||||
| 5/8" | 7/16" | 13/16" | 3/16" | 125 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 6191T11 | 000000 | 6191T18 | 000000 | ||
| 3/4" | 9/16" | 15/16" | 3/16" | 125 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 6191T12 | 00000 | 6191T19 | 00000 | ||
| 1" | 13/16" | 1 1/4" | 3/16" | 125 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 6191T13 | 00000 | 6191T21 | 00000 | ||
| 1 1/4" | 1" | 1 1/2" | 1/4" | 100 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 6191T14 | 00000 | 6191T22 | 00000 | ||
| 1 1/2" | 1 5/16" | 1 3/4" | 7/16" | 50 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 6191T15 | 00000 | 6191T23 | 000000 | ||
| 1 3/4" | 1 9/16" | 2" | 7/16" | 50 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 6191T16 | 000000 | 6191T24 | 000000 | ||
| 2 1/4" | 1 15/16" | 2 1/2" | 7/16" | 50 psi @ 70° F | 0 to 225 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | Lock Nut | 6191T17 | 000000 | 6191T25 | 000000 | ||
Sights for Quick-Clamp Sanitary Tube Fittings
 |
Sight Shown Assembled With Gasket, Quick-Clamp Fitting, And Tube Fitting (All Sold Separately) |
Monitor food, brewery, chemical, pharmaceutical, and biotech processing lines with these sights that attach to quick-clamp fittings for fast installation and easy removal for cleaning. All have a one-piece design, so there are no crevices where bacteria can grow. A quick-clamp fitting, gasket, and tube fitting are required (sold separately).
Plastic with Plastic Window
 |
For Tube OD | For Flange OD | Window Dia. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Each | |||
|---|---|---|---|---|---|---|---|---|---|
With One-Piece Construction | |||||||||
| 1", 1 1/2" | 1.984" | 1 1/4" | 250 psi @ 70° F | 30 to 200 | Water | 4942K1 | 000000 | ||
| 2" | 2.515" | 1 3/4" | 225 psi @ 70° F | 30 to 200 | Water | 4942K3 | 00000 | ||
| 2 1/2" | 3.047" | 2 1/2" | 200 psi @ 70° F | 30 to 200 | Water | 4942K5 | 00000 | ||
| 3" | 3.579" | 2 3/4" | 175 psi @ 70° F | 30 to 200 | Water | 4942K7 | 00000 | ||
| 4" | 4.682" | 3 1/2" | 100 psi @ 70° F | 30 to 200 | Water | 4942K9 | 00000 | ||
304 Stainless Steel with Plastic Window
 |
304 stainless steel sights have a ring that's embedded around their shatter-resistant plastic window. This design protects the sights from chipping or cracking while under the stress of the quick-clamp fitting. All withstand harsh cleaners and sanitizers for clean-in-place (CIP) and steam-in-place (SIP) applications. They do not contain Bisphenol A (BPA), Bisphenol B (BPB), or BPA derivatives (BPX), which are chemicals that can contaminate your process lines. All meet ASME BPE design standards for bioprocessing equipment that ensure purity and safety.
Temperature Range | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
For Tube OD | For Flange OD | Window Dia. | Max. Pressure @ Temp. | Min. | Max., ° F | For Use With | Features | Specs. Met | Each | ||
| 1" | 1.98" | 1 1/4" | 150 psi @ 70° F | Not Rated | 200 | Water, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | With One-Piece Construction | ASME BPE | 5070N11 | 0000000 | |
| 2" | 2.52" | 1 3/4" | 150 psi @ 70° F | Not Rated | 200 | Water, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | With One-Piece Construction | ASME BPE | 5070N12 | 000000 | |
| 4" | 4.68" | 3 1/4" | 30 psi @ 70° F | Not Rated | 200 | Water, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | With One-Piece Construction | ASME BPE | 5070N14 | 000000 | |
2205 Stainless Steel with Glass Window
 |
For superior strength and reliability, choose 2205 stainless steel sights. All have a glass window that’s melted around a high-strength ring, so they won’t shatter, leak, or lose their shape under high pressure, heat, chemicals, or impact. They withstand harsh cleaners and sanitizers for clean-in-place (CIP) and steam-in-place (SIP) applications. USP Class VI and TUV Rheinland Certified, these sights meet safety standards in the U.S. and Europe. They also meet DIN standards for glass materials used in sights, ASTM standards for materials used in boilers and pressure vessels, and ASME BPE design standards for bioprocessing equipment that ensure purity and safety.
For Tube OD | For Flange OD | Window Dia. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Specs. Met | Certification | USP Class | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
With One-Piece Construction | ||||||||||||
| 1", 1 1/2" | 1.98" | 1" | 230 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | ASME BPE, ASTM A479, DIN 7079, DIN 7080 | TUV Rheinland Certified | VI | 5070N15 | 0000000 | ||
| 2" | 2.52" | 1 3/16" | 230 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | ASME BPE, ASTM A479, DIN 7079, DIN 7080 | TUV Rheinland Certified | VI | 5070N16 | 000000 | ||
| 3" | 3.58" | 1 1/2" | 150 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | ASME BPE, ASTM A479, DIN 7079, DIN 7080 | TUV Rheinland Certified | VI | 5070N17 | 000000 | ||
| 4" | 4.68" | 2 3/16" | 150 psi @ 70° F | -40 to 500 | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | ASME BPE, ASTM A479, DIN 7079, DIN 7080 | TUV Rheinland Certified | VI | 5070N18 | 000000 | ||
High-Temperature Sights
 |
Often used in kilns and other heating equipment, these sights have a quartz window that can withstand temperatures up to 1600° F. They're also known as peep sights.
Window | Temperature Range | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Dia. | Material | Hex Size | Max. Pressure @ Temp. | Min. | Max., ° F | For Use With | Each | |||
316 Stainless Steel | |||||||||||
NPT Male | |||||||||||
| 1/2 | 5/16" | Quartz | 1" | 150 psi @ 1,600° F | Not Rated | 1,600 | Water, Air, Steam | 4791K61 | 0000000 | ||
| 3/4 | 9/16" | Quartz | 1 3/8" | 150 psi @ 1,600° F | Not Rated | 1,600 | Water, Air, Steam | 4791K62 | 000000 | ||
| 1 | 11/16" | Quartz | 1 5/8" | 150 psi @ 1,600° F | Not Rated | 1,600 | Water, Air, Steam | 4791K63 | 000000 | ||
| 1 1/4 | 1 1/16" | Quartz | 2" | 150 psi @ 1,600° F | Not Rated | 1,600 | Water, Air, Steam | 4791K64 | 000000 | ||
| 1 1/2 | 1 1/4" | Quartz | 2 1/4" | 150 psi @ 1,600° F | Not Rated | 1,600 | Water, Air, Steam | 4791K65 | 000000 | ||
| 2 | 1 1/2" | Quartz | 2 3/4" | 150 psi @ 1,600° F | Not Rated | 1,600 | Water, Air, Steam | 4791K66 | 000000 | ||
Easy-View Flanged Sights
Zinc with Plastic Window
 |
Flange OD | Window Dia. | Bolt Circle Dia. | No. of Bolt Holes | For Screw Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 1/4" | 1 1/4" | 1 7/8" | 4 | No. 8 | 10 psi @ 70° F | 0 to 160 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 1128K22 | 0000000 | ||
Press-Fit Through-Wall Sights
Zinc-Plated Brass with Plastic Window
 |
For Hole Dia. | OD | Window Dia. | For Max. Tank Wall Thk. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 1/4" | 1 1/4" | 1" | 9/32" | Not Rated | 0 to 160 | Water, Hydraulic Fluid, Diesel Fuel | Neoprene | 1128K11 | 000000 | ||
| 1 1/2" | 1 1/2" | 1 1/4" | 9/32" | Not Rated | 0 to 160 | Water, Hydraulic Fluid, Diesel Fuel | Neoprene | 1128K12 | 00000 | ||
| 2" | 2" | 1 5/8" | 9/32" | Not Rated | 0 to 160 | Water, Hydraulic Fluid, Diesel Fuel | Neoprene | 1128K13 | 00000 | ||
Flanged Sights
Zinc with Glass Window
 |
For Dark Liquids | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Window Dia. | Bolt Circle Dia. | No. of Bolt Holes | For Screw Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | |||
| 1 5/8" | 3/4" | 1 5/16" | 4 | No. 6 | 10 psi @ 70° F | -20 to 250 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3946N16 | 000000 | ||
| 1 7/8" | 1" | 1 9/16" | 4 | No. 6 | 10 psi @ 70° F | -20 to 250 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3946N17 | 000000 | ||
| 2 9/16" | 1 1/2" | 2 5/32" | 4 | No. 8 | 10 psi @ 70° F | -20 to 250 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3946N19 | 00000 | ||
Zinc-Plated Steel with Glass Window
|
For Dark Liquids | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Window Dia. | Bolt Circle Dia. | No. of Bolt Holes | For Screw Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | |||
| 2 1/4" | 1 1/4" | 1 7/8" | 4 | No. 8 | 10 psi @ 70° F | -20 to 250 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3946N18 | 0000000 | ||
| 3 1/8" | 2" | 2 11/16" | 4 | No. 10 | 10 psi @ 70° F | -20 to 250 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 3946N21 | 000000 | ||
Easy-View Sights
Zinc-Plated Steel with Plastic Window
 |
Zinc-plated steel sights have a shatter-resistant window.
Pipe Size | Window Dia. | Hex Size | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Seal Material | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|
NPT Male | ||||||||||
| 3/4 | 1" | 1 1/4" | 10 psi @ 70° F | 0 to 160 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 1128K3 | 000000 | ||
| 1 | 1" | 1 1/2" | 10 psi @ 70° F | 0 to 160 | Water, Hydraulic Fluid, Diesel Fuel | Neoprene | 1128K4 | 00000 | ||
| 1 1/4 | 1 1/4" | 1 7/8" | 10 psi @ 70° F | 0 to 160 | Water, Hydraulic Fluid, Diesel Fuel | Neoprene | 1128K5 | 00000 | ||
| 1 1/2 | 1 5/8" | 2 1/8" | 10 psi @ 70° F | 0 to 160 | Water, Diesel Fuel, Hydraulic Fluid (Petroleum Based) | Buna-N | 1128K6 | 00000 | ||
Easy-View All-Plastic Sights
 |
Plastic with Plastic Window
Pipe Size | Window Dia. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Each | |||
|---|---|---|---|---|---|---|---|---|
NPT Male | ||||||||
With One-Piece Construction | ||||||||
| 1/2 | 7/8" | 65 psi @ 70° F | -40 to 180 | Hydraulic Fluid | 6406T23 | 000000 | ||
| 3/4 | 1 1/8" | 65 psi @ 70° F | -40 to 180 | Hydraulic Fluid | 6406T24 | 00000 | ||
| 1 | 1 3/8" | 65 psi @ 70° F | -40 to 180 | Hydraulic Fluid | 6406T25 | 00000 | ||
| 1 1/4 | 1 3/4" | 65 psi @ 70° F | -40 to 180 | Hydraulic Fluid | 6406T26 | 00000 | ||
| 1 1/2 | 2" | 65 psi @ 70° F | -40 to 180 | Hydraulic Fluid | 6406T27 | 00000 | ||
| 2 | 2 1/2" | 65 psi @ 70° F | -40 to 180 | Hydraulic Fluid | 6406T28 | 00000 | ||
Ultra-High-Vacuum Flanged Sights
 |
Add a window to your ultra-high-vacuum system. With a pane of glass sealed inside an ultra-high-vacuum CF flange, these sights bolt onto vacuum chambers, tee fittings, and manifolds. Use a copper gasket (sold separately) to create a seal. Not for use with pressure.
Window | Bolt Holes | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
High-Vacuum Flange Size | Flange OD | High-Vacuum Connection Type | Max. Vacuum @ Temp. | Dia. | Material | Bolt Circle Dia. | No. of | Dia. | Max. Temp., ° F | Each | |||
304 Stainless Steel | |||||||||||||
| 16 | 1 21/64" | CF | 1× 10^-11 Torr @ 72° F | 5/8" | Glass | 1 1/16" | 6 | 11/64" | 660 | 3993N15 | 0000000 | ||
| 40 | 2 3/4" | CF | 1× 10^-11 Torr @ 72° F | 1 1/2" | Glass | 2 5/16" | 6 | 17/64" | 660 | 3993N16 | 000000 | ||
| 63 | 4 1/2" | CF | 1× 10^-11 Torr @ 72° F | 2 9/16" | Glass | 3 5/8" | 8 | 21/64" | 660 | 3993N17 | 000000 | ||
| 100 | 6" | CF | 1× 10^-11 Torr @ 72° F | 3 35/64" | Glass | 5 1/8" | 16 | 21/64" | 660 | 3993N18 | 000000 | ||
High-Vacuum Sights for Quick-Clamp Fittings
 |  |
Sight Shown Assembled with Tube Fitting, Ring, and Clamp (All Sold Separately) |
Designed with quick-clamp (KF) connections, these sights connect to a port on a high-vacuum chamber, so you can monitor what's happening inside. A sleeve seals the glass window to the body of the sight to prevent leaks. To connect to your chamber, you'll need a clamp and a ring (sold separately). Not for use in pressure applications.
Window | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
High-Vacuum Flange Size | For Flange OD | High-Vacuum Connection Type | Max. Vacuum @ Temp. | Dia. | Material | Max. Temp., ° F | Each | |||
304 Stainless Steel | ||||||||||
| 16 | 1.18" | ISO-KF | 1× 10^-8 Torr @ 72° F | 5/8" | Glass | 660 | 3646N15 | 0000000 | ||
| 25 | 1.57" | ISO-KF | 1× 10^-8 Torr @ 72° F | 5/8" | Glass | 660 | 3646N16 | 000000 | ||
| 40 | 2.16" | ISO-KF | 1× 10^-8 Torr @ 72° F | 1 1/4" | Glass | 660 | 3646N17 | 000000 | ||
| 50 | 2.95" | ISO-KF | 1× 10^-8 Torr @ 72° F | 1 1/4" | Glass | 660 | 3646N18 | 000000 | ||
 |
Clamp |
For High-Vacuum Flange Size | For Flange OD | For Tube OD | Material | Max. Vacuum @ Temp. | High-Vacuum Connection Type | Each | ||
|---|---|---|---|---|---|---|---|---|
| 10, 16 | 1.18" | 1/2", 3/4" | 304/304L Stainless Steel, 316/316L Stainless Steel, Aluminum, Zinc Alloy | 1× 10^-8 Torr @ 72° F | ISO-KF | 4518K711 | 00000 | |
| 25 | 1.57" | 1" | 304/304L Stainless Steel, 316/316L Stainless Steel, Aluminum, Zinc Alloy | 1× 10^-8 Torr @ 72° F | ISO-KF | 4518K72 | 00000 | |
| 40 | 2.16" | 1 1/2" | 304/304L Stainless Steel, 316/316L Stainless Steel, Aluminum, Zinc Alloy | 1× 10^-8 Torr @ 72° F | ISO-KF | 4518K73 | 00000 | |
| 50 | 2.95" | 2" | 304/304L Stainless Steel, 316/316L Stainless Steel, Aluminum, Zinc Alloy | 1× 10^-8 Torr @ 72° F | ISO-KF | 4518K74 | 00000 |
 |
Ring |
For High-Vacuum Flange Size | For Flange OD | For Tube OD | Inner Ring Material | Max. Vacuum @ Temp. | High-Vacuum Connection Type | Each | ||
|---|---|---|---|---|---|---|---|---|
| 16 | 1.18" | 3/4" | 304 Stainless Steel | 1× 10^-8 Torr @ 72° F | ISO-KF | 4518K621 | 00000 | |
| 25 | 1.57" | 1" | 304 Stainless Steel | 1× 10^-8 Torr @ 72° F | ISO-KF | 4518K63 | 00000 | |
| 40 | 2.16" | 1 1/2" | 304 Stainless Steel | 1× 10^-8 Torr @ 72° F | ISO-KF | 4518K64 | 00000 | |
| 50 | 2.95" | 2" | 304 Stainless Steel | 1× 10^-8 Torr @ 72° F | ISO-KF | 4518K65 | 00000 |
Sights for Oil Inspection
 |
Brass with Plastic Window
Pipe Size | Window Dia. | Reservoir Cap., fl. oz. | Max. Pressure @ Temp. | Temp. Range, ° F | For Use With | Each | |||
|---|---|---|---|---|---|---|---|---|---|
NPT Male | |||||||||
With Drain Valve | |||||||||
| 1/4 | 1 3/4" | 1 | 65 psi @ 70° F | 30 to 180 | Oil | 5729T81 | 000000 | ||
| 1/4 | 2 1/2" | 3 | 65 psi @ 70° F | 30 to 180 | Oil | 5729T84 | 00000 | ||
| 3/8 | 1 3/4" | 1 | 65 psi @ 70° F | 30 to 180 | Oil | 5729T82 | 00000 | ||
| 3/8 | 2 1/2" | 3 | 65 psi @ 70° F | 30 to 180 | Oil | 5729T85 | 00000 | ||
| 1/2 | 1 3/4" | 1 | 65 psi @ 70° F | 30 to 180 | Oil | 5729T83 | 00000 | ||
| 1/2 | 2 1/2" | 3 | 65 psi @ 70° F | 30 to 180 | Oil | 5729T86 | 00000 | ||
