Push-In Bore Sealing Plugs
Permanently seal unthreaded, counterbored holes in manifolds and other pneumatic or hydraulic components. These plugs resist vibration better than threaded plugs and don’t require thread sealant. They consist of a serrated sleeve with a ball bearing inside. When installed, the bearing is pushed inside the sleeve. This expands the sleeve so its serrations bite into the walls of the hole, sealing it shut.
Unlike plugs that install with an air- or hydraulic-powered tool, these plugs don’t require power to install. However, they’re harder to fit into angled or deep holes. To install, drive the installation tool (sold separately) into the plug with a hammer or arbor press.
Plugs with an aluminum sleeve are ideal for plugging holes in aluminum manifolds. They resist corrosion in wet environments. These plugs are also lighter in weight than our other plugs, but they won’t handle pressures as high.
Plugs with a steel sleeve can handle higher pressures than aluminum-sleeved plugs, but not as much as those with a stainless steel sleeve. They’re zinc plated for corrosion resistance in wet environments, but they’ll corrode from salt water and chemicals.
Plugs with a stainless steel sleeve work in the highest pressures of any sleeve material, so they’re the best choice for hydraulic applications. They also have good corrosion resistance.
Counterbore | ||||||||
|---|---|---|---|---|---|---|---|---|
| Sealing Dia. | Dia. | Min. Dp. | Installed Ht. | Max. Pressure, psi | Max. Temp., °F | Pkg. Qty. | Pkg. | |
Aluminum Sleeve | ||||||||
| 1/8" | 5/32" | 0.113" | 1/8" | 2,100 | 300° | 5 | 0000000 | 000000 |
| 1/8" | 5/32" | 0.149" | 5/32" | 3,000 | 300° | 5 | 0000000 | 00000 |
| 5/32" | 3/16" | 0.17" | 3/16" | 2,100 | 300° | 5 | 0000000 | 00000 |
| 5/32" | 3/16" | 0.208" | 7/32" | 3,000 | 300° | 5 | 0000000 | 00000 |
| 3/16" | 7/32" | 0.17" | 3/16" | 2,100 | 300° | 1 | 0000000 | 0000 |
| 3/16" | 7/32" | 0.208" | 7/32" | 3,000 | 300° | 1 | 0000000 | 0000 |
| 7/32" | 1/4" | 0.196" | 7/32" | 2,100 | 300° | 1 | 0000000 | 0000 |
| 7/32" | 1/4" | 0.247" | 1/4" | 3,000 | 300° | 1 | 0000000 | 0000 |
| 1/4" | 9/32" | 0.233" | 1/4" | 2,100 | 300° | 1 | 0000000 | 0000 |
| 1/4" | 9/32" | 0.287" | 19/64" | 3,000 | 300° | 1 | 0000000 | 0000 |
| 9/32" | 5/16" | 0.255" | 9/32" | 2,100 | 300° | 1 | 0000000 | 0000 |
| 9/32" | 5/16" | 0.326" | 21/64" | 3,000 | 300° | 5 | 0000000 | 00000 |
| 5/16" | 11/32" | 0.275" | 5/16" | 2,100 | 300° | 5 | 0000000 | 00000 |
| 5/16" | 11/32" | 0.385" | 25/64" | 3,000 | 300° | 5 | 0000000 | 00000 |
| 11/32" | 3/8" | 0.385" | 25/64" | 3,000 | 300° | 5 | 0000000 | 00000 |
| 3/8" | 13/32" | 0.308" | 23/64" | 2,100 | 300° | 1 | 0000000 | 0000 |
| 3/8" | 13/32" | 0.425" | 7/16" | 3,000 | 300° | 1 | 0000000 | 0000 |
| 2.3mm | 3mm | 2.9mm | 3.18mm | 3,000 | 300° | 5 | 0000000 | 00000 |
| 3.3mm | 4mm | 3.8mm | 4mm | 3,000 | 300° | 5 | 0000000 | 00000 |
| 5.3mm | 6mm | 6.3mm | 6.5mm | 3,000 | 300° | 1 | 0000000 | 0000 |
| 6.2mm | 7mm | 7.3mm | 7.5mm | 3,000 | 300° | 1 | 0000000 | 0000 |
| 9.2mm | 10mm | 10.8mm | 11mm | 3,000 | 300° | 5 | 0000000 | 00000 |
| 11mm | 12mm | 12.8mm | 13mm | 1,500 | 300° | 1 | 0000000 | 0000 |
Zinc-Plated Steel Sleeve | ||||||||
| 2.2mm | 3mm | 3.4mm | 3.6mm | 4,600 | 300° | 5 | 0000000 | 00000 |
| 3.3mm | 4mm | 3.8mm | 4mm | 4,600 | 300° | 5 | 0000000 | 0000 |
| 4.3mm | 5mm | 5.3mm | 5.5mm | 4,600 | 300° | 5 | 0000000 | 0000 |
| 5.3mm | 6mm | 6.3mm | 6.5mm | 4,600 | 300° | 5 | 0000000 | 0000 |
| 6.4mm | 7mm | 7.3mm | 7.5mm | 4,600 | 300° | 5 | 0000000 | 00000 |
| 7.4mm | 8mm | 8.3mm | 8.5mm | 4,600 | 300° | 1 | 0000000 | 0000 |
| 8.4mm | 9mm | 9.8mm | 10mm | 4,600 | 300° | 1 | 0000000 | 0000 |
| 9.4mm | 10mm | 10.8mm | 11mm | 4,600 | 300° | 1 | 0000000 | 0000 |
| 10.6mm | 12mm | 12.8mm | 13mm | 3,600 | 300° | 1 | 0000000 | 0000 |
| 12.7mm | 14mm | 14.5mm | 15mm | 3,600 | 300° | 1 | 0000000 | 00000 |
| 14.7mm | 16mm | 16.5mm | 17mm | 3,600 | 300° | 1 | 0000000 | 00000 |
| 16.7mm | 18mm | 18.5mm | 19mm | 3,600 | 300° | 1 | 0000000 | 00000 |
| 18.7mm | 20mm | 21.5mm | 22mm | 3,600 | 300° | 1 | 0000000 | 00000 |
| 20.7mm | 22mm | 24.5mm | 25mm | 3,600 | 300° | 1 | 0000000 | 00000 |
18-8 Stainless Steel Sleeve | ||||||||
| 1/16" | 3/32" | 0.081" | 3/32" | 5,500 | 300° | 5 | 00000000 | 0000 |
| 3/32" | 1/8" | 0.113" | 1/8" | 5,500 | 300° | 5 | 00000000 | 0000 |
| 1/8" | 5/32" | 0.13" | 5/32" | 5,500 | 300° | 5 | 00000000 | 00000 |
| 5/32" | 3/16" | 0.152" | 13/64" | 5,500 | 300° | 5 | 00000000 | 00000 |
| 3/16" | 7/32" | 0.187" | 7/32" | 5,500 | 300° | 5 | 00000000 | 00000 |
| 7/32" | 1/4" | 0.212" | 17/64" | 5,500 | 300° | 5 | 00000000 | 00000 |
| 1/4" | 9/32" | 1/4" | 9/32" | 5,500 | 300° | 5 | 00000000 | 00000 |
| 9/32" | 5/16" | 0.327" | 21/64" | 5,500 | 300° | 5 | 00000000 | 00000 |
| 5/16" | 11/32" | 0.385" | 25/64" | 5,500 | 300° | 1 | 00000000 | 0000 |
| 11/32" | 3/8" | 0.425" | 25/64" | 5,500 | 300° | 1 | 00000000 | 0000 |
| 3/8" | 13/32" | 0.425" | 7/16" | 4,000 | 300° | 1 | 00000000 | 0000 |
| 13/32" | 7/16" | 0.503" | 33/64" | 4,000 | 300° | 1 | 00000000 | 0000 |
| 7/16" | 15/32" | 0.504" | 33/64" | 4,000 | 300° | 1 | 00000000 | 0000 |
| 2.2mm | 3mm | 3.4mm | 3.6mm | 5,500 | 300° | 1 | 0000000 | 0000 |
| 3.3mm | 4mm | 3.8mm | 4mm | 5,500 | 300° | 1 | 0000000 | 0000 |
| 4.3mm | 5mm | 5.3mm | 5.5mm | 5,500 | 300° | 1 | 0000000 | 0000 |
| 5.3mm | 6mm | 6.3mm | 6.5mm | 5,500 | 300° | 1 | 0000000 | 0000 |
| 6.4mm | 7mm | 7.3mm | 7.5mm | 5,500 | 300° | 1 | 0000000 | 00000 |
| 7.4mm | 8mm | 8.3mm | 8.5mm | 5,500 | 300° | 1 | 0000000 | 00000 |
| 8.4mm | 9mm | 9.8mm | 10mm | 5,500 | 300° | 1 | 0000000 | 00000 |
| 9.4mm | 10mm | 10.8mm | 11mm | 5,500 | 300° | 1 | 0000000 | 00000 |
| 10.6mm | 12mm | 12.8mm | 13mm | 4,100 | 300° | 1 | 0000000 | 00000 |
| 12.7mm | 14mm | 14.5mm | 15mm | 4,100 | 300° | 1 | 0000000 | 00000 |
| For Counterbore Dia. | Dia. | Lg. | Each | |
Steel | ||||
|---|---|---|---|---|
| 3/32" | 3/8" | 5" | 00000000 | 000000 |
| 1/8", 3mm | 3/8" | 5" | 00000000 | 00000 |
| 5/32", 4mm | 3/8" | 5" | 00000000 | 00000 |
| 3/16" | 3/8" | 5" | 00000000 | 00000 |
| 7/32", 5mm | 3/8" | 5" | 00000000 | 00000 |
| 1/4", 6mm | 3/8" | 5" | 00000000 | 00000 |
| 9/32", 7mm | 3/8" | 5" | 00000000 | 00000 |
| 5/16", 8mm | 3/8" | 5" | 00000000 | 00000 |
| 11/32", 9mm | 5/8" | 5" | 00000000 | 00000 |
| 3/8" | 5/8" | 5" | 00000000 | 00000 |
| 13/32", 10mm | 5/8" | 5" | 00000000 | 00000 |
| 7/16" | 5/8" | 5" | 00000000 | 00000 |
| 15/32", 12mm | 5/8" | 5" | 00000000 | 00000 |
| 9/16", 14mm | 3/4" | 5" | 0000000 | 000000 |
| 5/8", 16mm | 3/4" | 5" | 0000000 | 000000 |
| 11/16", 18mm | 3/4" | 5" | 0000000 | 000000 |
| 25/32", 20mm | 1" | 5" | 0000000 | 000000 |
| 7/8", 22mm | 1" | 5" | 0000000 | 000000 |
Pull-Through Bore Sealing Plugs
Permanently plug unused holes–even deep or angled ones—in manifolds and other hydraulic or pneumatic components. The required installation tool reaches inside holes to expand these plugs with the pull of a trigger, making them a good choice for high-volume assembly. The tool lets you install them without risking damage to your equipment, unlike most plugs that have to be hammered in place. These plugs resist vibration better than threaded plugs and don’t require thread sealant.
They consist of a serrated sleeve with an internally threaded pin inside it. To install, you’ll need the installation tool fitted with a mandrel and nosepiece set (both sold separately). Thread your plug onto the mandrel, then position the plug within your hole. Press the tool’s trigger to pull the plug’s pin through the sleeve, expanding it. The outer serrations will bite into the hole to seal it shut. After expanding, the tool will automatically reverse its spin to pull away from the pin.
Aluminum-sleeved plugs weigh less than steel-sleeved plugs, and they’re better at resisting corrosion from air and water. However, they won’t handle pressures as high as steel-sleeved plugs. They’re ideal for plugging aluminum manifolds.
Steel-sleeved plugs handle pressures more than twice as high as aluminum-sleeved plugs. This makes them a better choice for hydraulic components.
| Sealing Dia. | Installed Ht. | Max. Pressure, psi | Max. Temp., °F | Thread Size | Pkg. Qty. | Pkg. | |
Aluminum Sleeve | |||||||
|---|---|---|---|---|---|---|---|
| 13/64" | 11/64" | 2,000 | 300° | 4-40 | 5 | 0000000 | 000000 |
| 6mm | 5mm | 2,000 | 300° | M3 × 0.5 mm | 5 | 0000000 | 00000 |
| 8mm | 6.5mm | 2,000 | 300° | M4 × 0.7 mm | 5 | 0000000 | 00000 |
| 10mm | 6.5mm | 2,000 | 300° | M5 × 0.8 mm | 5 | 0000000 | 00000 |
Black-Oxide Steel Sleeve | |||||||
| 13/64" | 7/32" | 4,500 | 300° | 4-40 | 5 | 0000000 | 00000 |
| 15/64" | 1/4" | 4,500 | 300° | 6-32 | 5 | 0000000 | 00000 |
| 4.5mm | 4mm | 4,500 | 300° | M2 × 0.4 mm | 5 | 0000000 | 00000 |
| 8mm | 8.5mm | 4,500 | 300° | M4 × 0.7 mm | 5 | 0000000 | 00000 |
| 10mm | 10.5mm | 4,500 | 300° | M6 × 1 mm | 5 | 0000000 | 00000 |
Air Connection | Body | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Thread Size  | Stroke Lg. | Operating Pressure, psi | Pulling Force, lbs. | Wt., lbs. | Pipe Size | Thread Type | Gender | Dia. | Wd. | Head Lg. | Overall Ht. | Each | |
| 4-40, 6-32, M2, M3, M4, M5, M6 | 0.04"-0.28" | 75-100 | 5,000 | 4 | 1/4 | NPT | Female | 4 5/16" | 1" | 10 1/4" | 10 1/2" | 0000000 | 000000000 |
| For Thread Size | Max. Thread Lg. | Includes | Each | |
| 4-40 | 45/64" | Mandrel, Anvil, Hex Driver, Lock Nut, Sleeve | 0000000 | 0000000 |
| 6-32 | 49/64" | Mandrel, Anvil, Hex Driver, Lock Nut, Sleeve | 0000000 | 000000 |
| M2 × 0.4 mm | 6mm | Mandrel, Anvil, Hex Driver, Lock Nut, Sleeve | 0000000 | 000000 |
| M3 × 0.5 mm | 11.8mm | Mandrel, Anvil, Hex Driver, Lock Nut, Sleeve | 0000000 | 000000 |
| M4 × 0.7 mm | 14.8mm | Mandrel, Anvil, Hex Driver, Lock Nut, Sleeve | 0000000 | 000000 |
| M5 × 0.8 mm | 15.6mm | Mandrel, Anvil, Hex Driver, Lock Nut, Sleeve | 0000000 | 000000 |
| M6 × 1 mm | 27.4mm | Mandrel, Anvil, Hex Driver, Lock Nut, Sleeve | 0000000 | 000000 |
Weld-On Sights
Weld these sights to single-wall tanks. They’re often used to monitor contents in process vessels, mixers, and bulk containers.
316L stainless steel sights are more corrosion resistant than 304 stainless steel sights.
DIN 11851 rated sights meet dairy fitting standards.
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.
Temp. Range, °F | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Hole Dia. | OD | Window Dia. | Max. Pressure | Min. | Max. | For Use With | Window Material | Seal Material | Specifications Met | Each | |
316L Stainless Steel | |||||||||||
With Screw-Together Window | |||||||||||
| 2" | 3 5/8" | 2" | 150 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 0000000 |
| 2 1/2" | 4 7/16" | 2 1/2" | 150 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
| 3 1/8" | 5" | 3 1/8" | 150 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
| 4" | 5 13/16" | 4" | 150 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
| 5" | 7" | 5" | 90 psi @ 70° F | -20° | 390° | Water, Hydraulic Fluid, Compressed Air | Glass | Silicone Rubber | DIN 11851 | 0000000 | 000000 |
Sights for Quick-Clamp Sanitary Tube Fittings
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
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.
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.
Temp. Range, °F | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | For Flange OD | Window Dia. | Max. Pressure | Min. | Max. | For Use With | Features | Specifications Met | Each | |
304 Stainless Steel Ring with Plastic Window | ||||||||||
| 1" | 1.98" | 1 1/4" | 150 psi @ 70° F | Not Rated | 200° | Water, Acetic Acid, Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | One-Piece Construction | ASME BPE | 0000000 | 0000000 |
| 2" | 2.52" | 1 3/4" | 150 psi @ 70° F | Not Rated | 200° | Water, Acetic Acid, Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | One-Piece Construction | ASME BPE | 0000000 | 000000 |
| 4" | 4.68" | 3 1/4" | 30 psi @ 70° F | Not Rated | 200° | Water, Acetic Acid, Air, Alcohol-Based Solvents, Compressed Air, Salt Water, Steam | One-Piece Construction | ASME BPE | 0000000 | 000000 |
2205 Stainless Steel Ring with Glass Window | ||||||||||
| 1", 1 1/2" | 1.98" | 1" | 230 psi @ 70° F | -40° | 500° | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | One-Piece Construction | ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI | 0000000 | 000000 |
| 2" | 2.52" | 1 3/16" | 230 psi @ 70° F | -40° | 500° | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | One-Piece Construction | ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI | 0000000 | 000000 |
| 3" | 3.58" | 1 1/2" | 150 psi @ 70° F | -40° | 500° | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | One-Piece Construction | ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI | 0000000 | 000000 |
| 4" | 4.68" | 2 3/16" | 150 psi @ 70° F | -40° | 500° | Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid, Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, Steam | One-Piece Construction | ASME BPE, ASTM A479, DIN 7079, DIN 7080, TUV Rheinland Certified, USP Class VI | 0000000 | 000000 |