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How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Ultra-High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Argon, Helium, Nitrogen
- Temperature Range: -420° to 1000° F
- Tubing: Use with 316/316L stainless steel
- Compatible With: Swagelok® VCR
The 15 Ra finish on the interior of these fittings creates an ultra-smooth surface. Also known as ultra-high-purity fittings, they are packed in a Class 100 clean room to prevent contamination. They are commonly used in semiconductor applications. Fittings use a metal gasket (sold separately), which generates fewer particles than a rubber gasket and creates a strong seal in high-pressure and high-vacuum applications. Fittings are 316 stainless steel for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Wall Thick. | Lg. | Material | Max. Pressure | Max. Vacuum | Each | |
| 1/2" | 0.049" | 1 1/8" | 316L Stainless Steel | 3,500 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 000000 |
Use a female nut to connect a threaded adapter or a Yor-Lok adapter with a butt-weld adapter.
Ultra-High-Polish Gasket Adapters for Stainless Steel Tubing
- For Use With: Argon, Helium, Nitrogen
- Temperature Range: -420° to 1000° F
- Tubing: Use with 316/316L stainless steel
- Compatible With: Swagelok® VCR
The 15 Ra finish on the interior of these adapters provides an ultra-smooth surface. Also known as ultra-high-purity fittings, they are packed in a Class 100 clean room to prevent contamination. They are commonly used in semiconductor applications. Adapters use a metal gasket (sold separately) which generates fewer particles than a rubber gasket and creates a strong seal in high-pressure and high-vacuum applications. Adapters are 316 stainless steel for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Vibration-Resistant Ultra-High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Argon, Helium, Nitrogen
- Temperature Range: -420° to 1000° F
- Tubing: Use with 316/316L stainless steel
Polished to a 7 Ra finish on the inside, these fittings have an ultra-smooth interior surface. Also known as ultra-high-purity fittings, they are packed in a Class 100 clean room to prevent contamination. They are commonly used in semiconductor applications. Fittings use a metal gasket, which generates fewer particles than a rubber gasket and creates a strong seal in high-pressure and high-vacuum applications. Two anti-torque rings further reduce particle generation by preventing the metal gasket from twisting and loosening. Fittings are 316 stainless steel for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Wall Thickness | Lg. | Material | Max. Pressure | Max. Vacuum | Each | |
| 1/4" | 0.035" | 1 13/16" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 000000 |
| 1/4" | 0.035" | 2 13/16" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 3/8" | 0.035" | 2 5/8" | 316/316L Stainless Steel | 2,700 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 1/2" | 0.049" | 2 15/16" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 000000 |
| For Tube OD | Wall Thick. | Lg. | Material | Max. Pressure | Max. Vacuum | Compatible With | Each | |
| 1/4" | 0.035" | 1 1/8" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | Swagelok® VCR | 0000000 | 000000 |
| 1/4" | 0.035" | 1 3/4" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | Swagelok® VCR | 0000000 | 00000 |
| 3/8" | 0.035" | 5/8" | 316/316L Stainless Steel | 2,700 psi @ 72° F | 10 -11 torr @ 72° F | Swagelok® VCR | 0000000 | 00000 |
| 3/8" | 0.035" | 1 5/16" | 316/316L Stainless Steel | 2,700 psi @ 72° F | 10 -11 torr @ 72° F | Swagelok® VCR | 0000000 | 00000 |
| 1/2" | 0.049" | 1 1/8" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | Swagelok® VCR | 0000000 | 00000 |
| 1/2" | 0.049" | 1 13/16" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | Swagelok® VCR | 0000000 | 00000 |
Male | Female | ||||||
|---|---|---|---|---|---|---|---|
| For Tube OD | Nut Material | Max. Pressure | Max. Vacuum | Each | Each | ||
| 1/4" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 | 0000000 | 00000 |
| 3/8" | 316/316L Stainless Steel | 2,700 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 0000 | 0000000 | 0000 |
| 1/2" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 | 0000000 | 00000 |
Precision Extreme-Pressure Brass Threaded Pipe Nipples and Pipe
- For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
This pipe has the most precise threads and the tightest tolerances of all the brass pipe we offer. It has rolled threads for excellent strength in extreme-pressure applications. Pipe is brass for good corrosion resistance. Also known as a close nipple, it is threaded on each end to the center.
For technical drawings and 3-D models, click on a part number.
| Pipe Size  | Lg. | Thread Type | Max. Pressure | Max. Steam Pressure | Each | |
| 1/8 | 3/4" | NPT | 5,600 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 1 1/8" | NPT | 4,100 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
| 3/8 | 1 1/8" | NPT | 4,000 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 1 1/2" | NPT | 3,900 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
| 3/4 | 1 1/2" | NPT | 3,800 psi @ 72° F | 1,500 psi @ 300° F | 00000000 | 00000 |
Argon, Nitrogen, and Oxygen Hose with Male and Female Threaded Fittings
- Temperature Range: -65° to 450° F
- Maximum Vacuum: 28" of Hg @ 72° F
- Material: PTFE with 304 Stainless Steel Cover
This hose is often called pigtail hose. It comes cleaned, capped, and bagged to meet CGA (Compressed Gas Association) G4.1. Hose should not be used underground.
Argon, Nitrogen, and Oxygen Hose with Female Threaded Fittings
- Temperature Range: -65° to 450° F
- Maximum Vacuum: 28" of Hg @ 72° F
- Material: PTFE with 304 Stainless Steel Cover
This hose is often called pigtail hose. It comes cleaned, capped, and bagged to meet CGA (Compressed Gas Association) G4.1. Hose should not be used underground.
High-Temperature Argon, Nitrogen, and Oxygen Hose
- Temperature Range: -320° to 1,500° F
- Maximum Vacuum: 29" of Hg @ 72° F
- Material: 316 Stainless Steel with 304 Stainless Steel Cover
Transfer industrial gases in temperatures up to 1500° F. The braided reinforcement provides good flexibility in high-vibration applications. A cover surrounds the braid to protect it from damage. Hose comes cleaned, capped, and bagged to meet CGA (Compressed Gas Association) G4.1. It should not be used underground.