McMaster-Carr

Choose a Category

	For Pipe Size For Pipe Size

3/16

1/4

	Expansion Plug Type Expansion Plug Type


Wing Nut	Inflatable

Hex Nut	Snap

T-Handle	Square Head

	Sealing Location Sealing Location


End of Pipe	Inside Pipe	End of Tube

	For Minimum Pipe ID For Minimum Pipe ID

	Type Type

	Plug		Cap

	Plate Material Plate Material

Stainless Steel

Steel

Plastic

	Pipe Size Pipe Size

	Maximum Air Back Pressure Maximum Air Back Pressure

	Material Material

	Drive Style Drive Style


Hex	External Square

External Hex

	For Maximum Pipe ID For Maximum Pipe ID

	With Bypass With Bypass

Yes

	Maximum Temperature Maximum Temperature

	System of Measurement System of Measurement

Inch

Metric

	Maximum Water Back Pressure Maximum Water Back Pressure

	Plug Construction Plug Construction

With Magnet

Solid with Magnet

	Seal Material Seal Material

Rubber

Plastic

	Thread Type Thread Type

NPTF

NPT

Metric

	Overall Height Overall Height

	Connection Style Connection Style

Threaded

Clamp On

Socket Connect

	Gender Gender

Male

Female

	For Use With For Use With

	Fitting Material Fitting Material

Brass

Stainless Steel

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355 Products

Expansion Plugs

Wing Nut Expansion Plugs

Twist the wing nut on these plugs to expand the seal.

Hex-Nut Expansion Plugs

Tighten the nut on these plugs to expand the seal.

Quick-Snap Expansion Plugs

Turn the cam handle to expand the seal, then snap the handle down to hold it in place.

T-Handle Expansion Plugs

Twist the easy-grip t-handle on these plugs to expand the seal.

Square-Head Expansion Plugs

Turn the square head of the plug into the sealing ring to close off pipe openings.

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.

Air- and Water-Inflatable Plugs

Penetrate tight pipe junctures with the most flexible expansion plugs we offer.

Air-Inflatable Plugs

Also known as pneumatic plugs, these plugs conform to wide and out-of-round pipes.

Air- and Water-Inflatable
Plugs for Y-Joints

These extra-long plugs allow you to seal off two pipes at the same time. They have two separate inflation chambers to release back pressure gradually and prevent splash back as water clears the drain line.

Air-Inflatable Plugs with Bypass

Use the bypass tube on these plugs to add air, water, and other fluid to your pipeline or to relieve back pressure while testing.

Expansion Plugs for Tubing

These plugs are designed for metal and rigid plastic tubing.

Deep-Reach Wing
Nut Expansion Plugs

Insert these plugs deep within your pipe to seal it off from the inside.

Deep-Reach Hex Nut
Expansion Plugs with Bypass

Use the bypass tube to add air, water, and fluid or relieve back pressure.

Plumbing Fixtures and Drains

Drain Pipe Plugs

Seal unthreaded pipe ends with these plugs. They come with a band that clamps over the outside wall of your pipe and tightens with a screwdriver.

Floor Drain Backflow Preventers

Put an end to water damage from backed-up sewers. When water backs up, the rubber float will rise to seal off the drain. When water recedes, the float will drop for normal drainage.

Pipe and Pipe Fittings

Low-Pressure Stainless
Steel Threaded Pipe Fittings

Use these corrosion-resistant fittings in a low-pressure pipe line.

Low-Pressure Iron and
Steel Threaded Pipe Fittings

Use these fittings for low-pressure applications in noncorrosive environments.

Underground PVC Pipe Fittings
for Drain, Waste, and Vent

With thinner walls than Schedule 40 fittings, these are lighter in weight and have more space on the inside for high-flow applications, such as underground gravity-flow sewer and storm drainage lines. They are also known as SDR 35 fittings.

Aboveground Standard-Wall
PVC Pipe Fittings for
Drain, Waste, and Vent

These Schedule 40 fittings are the industry standard for gravity-flow drain, waste, and vent (DWV) applications.

Underground Snap-Lock
Polyethylene Pipe Fittings
for Drain, Waste, and Vent

The snap-together design allows you to quickly connect these fittings to pipe with no cement required. Fittings are typically used in gravity-flow drainage applications.

Self-Draining Breather Vents

Minimize moisture buildup in enclosures. Also known as drain plugs, these breather vents have a small outlet that allows condensation to drain.

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Expansion Plugs

Wing Nut Expansion Plugs

Hex-Nut Expansion Plugs

Quick-Snap Expansion Plugs

T-Handle Expansion Plugs

Square-Head Expansion Plugs

Expansion Plugs with Bypass

Air- and Water-Inflatable Plugs

Air-Inflatable Plugs

Air- and Water-InflatablePlugs for Y-Joints

Air-Inflatable Plugs with Bypass

Expansion Plugs for Tubing

Deep-Reach WingNut Expansion Plugs

Deep-Reach Hex NutExpansion Plugs with Bypass

Plumbing Fixtures and Drains

Drain Pipe Plugs

Floor Drain Backflow Preventers

Pipe and Pipe Fittings

Low-Pressure StainlessSteel Threaded Pipe Fittings

Low-Pressure Iron andSteel Threaded Pipe Fittings

Underground PVC Pipe Fittingsfor Drain, Waste, and Vent

Aboveground Standard-WallPVC Pipe Fittings for Drain, Waste, and Vent

Underground Snap-LockPolyethylene Pipe Fittings for Drain, Waste, and Vent

Self-Draining Breather Vents

Self-Draining Breather Vents

Air- and Water-Inflatable
Plugs for Y-Joints

Deep-Reach Wing
Nut Expansion Plugs

Deep-Reach Hex Nut
Expansion Plugs with Bypass

Low-Pressure Stainless
Steel Threaded Pipe Fittings

Low-Pressure Iron and
Steel Threaded Pipe Fittings

Underground PVC Pipe Fittings
for Drain, Waste, and Vent

Aboveground Standard-Wall
PVC Pipe Fittings for
Drain, Waste, and Vent

Underground Snap-Lock
Polyethylene Pipe Fittings
for Drain, Waste, and Vent