For Pipe Size 7/8 Caps | McMaster-Carr

Filter by

Expansion Plug Type

For Pipe ID

Plate Material

Sealing Location

Material

Overall Height

Maximum Air Back Pressure

Maximum Temperature

Handle Material

Height

Seal Material

Maximum Pressure

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

Maximum Water Back Pressure

Less than 50 ft. of head

Minimum Temperature

REACH

RoHS

With Bypass

Thread Type

Fitting Connection

Bypass Cap Material

Bypass Connection Port

Stem Material

Bypass Thread Type

6 Products

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.

Stainless Steel Plate—Plugs with a stainless steel plate have excellent corrosion resistance.

Maximum Air Back Pressure—Maximum air back pressure is the amount of pressure a plug can withstand without moving.

Maximum Water Back Pressure—Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

For Pipe		Max. Back Pressure					Brass Handle		Stainless Steel Handle
Size	ID	Air, psi	Water, ft. of head	Overall Ht.	Temp. Range, ° F	Seal Material		Each		Each







			Stainless Steel Plate

			7/8	0.85" to 0.92"	10	24	1 3/8"	-40 to 250	Neoprene	0000000	000000	0000000	000000

Expansion Plugs with Bypass


Style E	Style J

Use the bypass tube on these plugs to add air, water, and other fluid to your pipeline or to relieve pressure while testing. The seal expands to temporarily close off pipe openings.

Style E—For Style E, twist the wing nut to expand the seal. They have a barbed bypass for quick connections to tubing.

Style J—For Style J, twist the wing nut to expand the seal. They have a Schrader valve bypass. An internal spring holds the valve shut until you depress the pin, giving you control over air flow.

Maximum Air Back Pressure—Maximum air back pressure is the amount of pressure a plug can withstand without moving.

Maximum Water Back Pressure—Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

	For Pipe		Max. Back Pressure				Material		Bypass
	Size	ID	Air, psi	Water, ft. of head	Overall Ht.	Temp. Range, ° F	Seal	Bypass Cap	Thread Type	Thread Size	For Tube ID	Connection		Each
Style E







				Stainless Steel Stem

				7/8	0.81" to 0.89"	10	24	3 1/2"	-40 to 250	Neoprene	—	—	—	1/4"	Barbed	0000000	0000000


				Style J







								Zinc-Plated Steel Stem

								7/8	0.81" to 0.89"	10	23	3 5/8"	-40 to 210	Neoprene	Plastic	Schrader	0.305"-32	—	—	00000000	000000

Hex-Nut Expansion Plugs

Style B

Tighten the nut on these plugs to expand the seal and close off pipe openings.

Stainless Steel Plate—Plugs with a stainless steel plate have excellent corrosion resistance.

Maximum Air Back Pressure—Maximum air back pressure is the amount of pressure a plug can withstand without moving.

Maximum Water Back Pressure—Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

	For Pipe		Max. Back Pressure
	Size	ID	Air, psi	Water, ft. of head	Overall Ht.	Temp. Range, ° F	Seal Material		Each
Style B







				Stainless Steel Plate

				7/8	0.82" to 0.92"	10	24	1 11/16"	-40 to 250	Neoprene	0000000	000000

Wing-Nut Expansion Plugs

Style A

Twist the wing nut on these plugs to expand the seal and close off pipe openings.

Style A—Style A aren’t recommended for pressure testing, so they’re often used as a dust cover.

Stainless Steel Plate—Plugs with a stainless steel plate have excellent corrosion resistance.

Maximum Air Back Pressure—Maximum air back pressure is the amount of pressure a plug can withstand without moving.

Maximum Water Back Pressure—Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

	For Pipe		Max. Back Pressure
	Size	ID	Air, psi	Water, ft. of head	Overall Ht.	Temp. Range, ° F	Seal Material		Each
Style A







				Stainless Steel Plate

				7/8	0.82" to 0.92"	10	24	1 11/16"	0 to 175	Neoprene	0000000	000000