For Pipe Size For Pipe Size | Show |
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For Pipe Size For Pipe Size | Hide |
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System of Measurement System of Measurement |
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For Shape For Shape |
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![]() | Round |
For Connection Type For Connection Type |
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Cap Type Cap Type |
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Push On | Snap On |
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Adhesive Back |
Plug Type Plug Type |
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![]() | Push In |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Maximum Temperature Maximum Temperature |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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For Thread Type For Thread Type |
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Expansion Plug Type Expansion Plug Type |
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Wing Nut | Snap |
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T-Handle | Hex Nut |
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Inflatable |
For Minimum Pipe ID For Minimum Pipe ID |
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For Surface Type For Surface Type |
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Metal Round Caps

More durable than plastic caps, these provide the most protection from abrasion and impact.
Steel caps are stronger than aluminum.
Aluminum caps have good corrosion resistance, are lightweight, and are nonmagnetic.
Stainless steel caps have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Tapered Caps

These flexible plastic caps are tapered to fit a variety of unthreaded and threaded objects.
For technical drawings and 3-D models, click on a part number.
For OD | For Pipe Size | Inside Ht. | Max. Temp., °F | Color | Pkg. Qty. | Pkg. | |
Flexible Polyethylene Plastic | |||||||
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2.685"-2.947" | 2 1/2 | 1" | 150° | Red | 50 | 0000000 | 000000 |
Tear-Tab Caps


Push these caps onto pipe and fittings, then tear their tab to break the seal for easy removal.
For technical drawings and 3-D models, click on a part number.
For OD | For Pipe Size | Inside Ht. | Max. Temp., °F | Color | Pkg. Qty. | Pkg. | |
Rigid Polyethylene Plastic | |||||||
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For NPT Tapered-Thread Pipe and Unthreaded Pipe | |||||||
2.792" | 2 1/2 | 1 5/16" | 150° | Blue | 25 | 0000000 | 000000 |
Adhesive-Back Flange Caps

Stick these caps on the raised surfaces of flanges or other flat surfaces for extra protection during transport and storage.
For technical drawings and 3-D models, click on a part number.
For Pipe Size | For OD | Adhesive Type | Max. Temp., °F | Color | Pkg. Qty. | Pkg. | |
Rigid Plastic | |||||||
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2 1/2 | 4 1/8" | Rubber | 160° | Black | 6 | 0000000 | 000000 |
Flange Caps


Snap these caps into flange bolt holes to safeguard pipe flanges during shipping, storing, and finishing applications. They all have a thick center pad to protect the flange opening and pipe threads from damage.
For technical drawings and 3-D models, click on a part number.
For Pipe Size | For Pressure Class | For Bolt Circle Dia. | Max. Temp., °F | Color | Pkg. Qty. | Pkg. | |
Flexible Polyethylene Plastic | |||||||
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2 1/2 | 150 | 5 1/2" | 175° | Red | 1 | 0000000 | 00000 |
Hollow Tapered Plugs

The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes of varying diameters. Use the flange to remove them with ease.
For technical drawings and 3-D models, click on a part number.
Hollow High-Temperature Tapered Plugs

The hollow construction allows these plugs to compress for a snug fit in threaded and unthreaded holes of varying diameters. Good for electroplating, paint baking, and powder-coating applications, these plugs withstand temperatures up to 450° F for 20 minutes. Use the flange to remove them with ease.
For technical drawings and 3-D models, click on a part number.
Wing Nut Expansion Plugs

Twist the wing nut on these plugs to expand the seal and close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
For Pipe | Max. Back Pressure | |||||||
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Size | ID | Air, psi | Water, ft. of head | O'all Ht. | Temp. Range, °F | Seal Material | Each | |
Style A | ||||||||
Stainless Steel Plate | ||||||||
2 1/2 | 2.44"-2.60" | 5 | 12 | 2 13/16" | 0° to 175° | Neoprene Rubber | 0000000 | 000000 |
Quick-Snap Expansion Plugs

Turn the cam handle to expand the seal, then snap the handle down to hold it in place and close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
For technical drawings and 3-D models, click on a part number.
For Pipe | Max. Back Pressure | Brass Handle | Stainless Steel Handle | |||||||
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Size | ID | Air, psi | Water, ft. of head | O'all Ht. | Temp. Range, °F | Seal Material | Each | Each | ||
Zinc-Plated Steel Plate | ||||||||||
2 1/2 | 2.47"-2.55" | 5 | 12 | 2 5/16" | -40° to 250° | Neoprene Rubber | 0000000 | 000000 | 000000 | 00 |
Stainless Steel Plate | ||||||||||
2 1/2 | 2.47"-2.55" | 5 | 12 | 2 5/16" | -40° to 250° | Neoprene Rubber | 000000 | 00 | 0000000 | 000000 |
T-Handle Expansion Plugs

Twist the easy-grip t-handle on these plugs to expand the seal and close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
For technical drawings and 3-D models, click on a part number.
For Pipe | Max. Back Pressure | Brass Handle | Stainless Steel Handle | |||||||
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Size | ID | Air, psi | Water, ft. of head | O'all Ht. | Temp. Range, °F | Seal Material | Each | Each | ||
Zinc-Plated Steel Plate | ||||||||||
2 1/2 | 2.44"-2.60" | 5 | 12 | 3 11/16" | -40° to 250° | Neoprene Rubber | 0000000 | 000000 | 000000 | 00 |
Stainless Steel Plate | ||||||||||
2 1/2 | 2.44"-2.60" | 5 | 12 | 3 11/16" | -40° to 250° | Neoprene Rubber | 000000 | 00 | 0000000 | 000000 |
Hex-Nut Expansion Plugs


Tighten the nut on these plugs to expand the seal and close off pipe openings. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
Style D have an eyebolt that allows you to tether or hang the plug for convenient storage.
Expansion Plugs with Bypass


Use the bypass tube on these plugs to add air, water, and other fluid to your pipeline or to relieve pressure while testing. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
Style G and Style J plugs have a Schrader valve, which has an internal spring that holds the valve shut until you depress the pin, providing control over air flow.
For technical drawings and 3-D models, click on a part number.
For Pipe | Max. Back Pressure | Material | Bypass | ||||||||||
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Size | ID | Air, psi | Water, ft. of head | O'all Ht. | Temp. Range, °F | Seal | Bypass Cap | Pipe Size | Thread Type | Thread Size | Gender | Each | |
Style D | |||||||||||||
Plastic Stem | |||||||||||||
2 1/2 | 2.40"-2.76" | 30 | 69 | 4 1/2" | -40° to 180° | Natural Rubber | Plastic | 1/2 | NPT | __ | Male | 0000000 | 000000 |
Style G | |||||||||||||
Steel Stem | |||||||||||||
2 1/2 | 2.44"-2.71" | 5 | 12 | 4 15/16" | -40° to 210° | Neoprene Rubber | Plastic | __ | Schrader Valve | 0.305"-32 | __ | 00000000 | 000000 |
Air-Inflatable Plugs
Conform to wide and out-of-round pipes with these inflatable plugs. Also known as pneumatic plugs, they're designed for temporary seals since they can lose pressure over time. Inflate with a hand pump (sold separately); an air compressor may overinflate the plug and cause damage. Tether the plugs using either the eyebolt or chain/ring so they don't get lost or stuck in your pipes. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

For Pipe | Deflated | Max. Back Pressure | Material | ||||||||
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Size | ID | Dia. | Ht. | Air, psi | Water, ft. of head | Required Inflation Pressure, psi | Temp. Range, °F | Seal | Chain/Ring | Each | |
2 1/2 | 2.34"-2.75" | 2 5/16" | 4 1/2" | 13 | 30 | 35 | -20° to 125° | Natural Rubber | Zinc-Plated Steel | 000000 | 000000 |
Deep-Reach Wing Nut Expansion Plugs

Plate With
Brass Stem
Insert these plugs deep within your pipe to seal it off from the inside. Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.
For technical drawings and 3-D models, click on a part number.
Cleanout Plugs



Close off your drain cleanout pipe with these threaded plugs. Note: If you do not know your pipe size, measure the OD of your existing cleanout plug or the ID of your cleanout fitting and match to the value listed.