Drum Bungs | McMaster-Carr

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For Drum Plug Size

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For Drum Plug Material

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304 Stainless Steel

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57 Products

Drum Plugs


Style A	Style B	Style C	Style D	Style E

Style F	Style G	Style H	Style J

For installation and removal of these plugs, use drum-plug wrenches.

Polyethylene


Style A	Style B	Style C	Style D

Style D—Style D have a M64 thread size, which is also known as Buttress threads.

Drum Plug Caps—Drum-plug caps (sold separately) fit over drum plugs to provide dust protection as well as evidence of tampering. They have a breakaway seal and are for one-time use.

Drum Plugs												Drum Plug Caps			Drum Plug Crimpers
Style	Drum Plug Type	Color	Seal Material	Pipe/Thread Size	Gender	Max. Temp., ° F	Opening Pressure Range, psi	Features	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.		Each
A	Pressure Relief, Vacuum Relief	White	—	3/4 NPSM	Male	125	1 to 4	Vent	5	0000000	000000	10	0000000	00000	0000000	0000000
A	Standard	White	—	3/4 NPSM	Male	125	—	—	5	0000000	0000	10	0000000	0000	0000000	000000
B	Pressure Relief, Vacuum Relief	White	EPDM	2 NPSM	Male	125	1 to 4	Vent	5	0000000	00000	10	0000000	00000	0000000	000000
C	Standard	White	—	2 NPSM	Male	125	—	3/4 NPSM Faucet Knockout	5	0000000	00000	10	0000000	00000	0000000	000000
D	Standard	White	EPDM	M64 Metric	Male	125	—	3/4 NPSM Faucet Knockout	5	0000000	00000	10	0000000	00000	0000000	000000

Polypropylene


Style A	Style B	Style C	Style D

Style D—Style D have a M64 thread size, which is also known as Buttress threads.

Drum Plug Caps—Drum-plug caps (sold separately) fit over drum plugs to provide dust protection as well as evidence of tampering. They have a breakaway seal and are for one-time use.

Drum Plugs												Drum Plug Caps			Drum Plug Crimpers
Style	Drum Plug Type	Color	Seal Material	Pipe/Thread Size	Gender	Max. Temp., ° F	Opening Pressure Range, psi	Features	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.		Each
A	Pressure Relief, Vacuum Relief	Gray	—	3/4 NPSM	Male	125	1 to 4	Vent	5	0000000	000000	10	0000000	00000	0000000	0000000
A	Standard	Gray	—	3/4 NPSM	Male	125	—	—	5	0000000	00000	10	0000000	0000	0000000	000000
B	Pressure Relief, Vacuum Relief	White	EPDM	2 NPSM	Male	125	1 to 4	Vent	5	0000000	00000	10	0000000	00000	0000000	000000
C	Standard	Gray	—	2 NPSM	Male	125	—	3/4 NPSM Faucet Knockout	5	0000000	00000	10	0000000	00000	0000000	000000
D	Standard	White	—	M64 Metric	Male	125	—	3/4 NPSM Faucet Knockout	5	0000000	00000	10	0000000	00000	0000000	000000

Zinc-Plated Steel


Style E	Style F	Style G

Drum Plug Caps—Drum-plug caps (sold separately) fit over drum plugs to provide dust protection as well as evidence of tampering. They have a breakaway seal and are for one-time use.

Drum Plugs									Drum Plug Caps
Style	Drum Plug Type	Seal Material	Pipe/Thread Size	Gender	Opening Pressure Range, psi	Features		Each	Pkg. Qty.		Pkg.
E	Pressure Relief	Buna-N	3/4 NPSM	Male	0.5 to 4	Vent	0000000	00000	10	0000000	00000
E	Standard	Buna-N	3/4 NPSM	Male	—	—	000000	0000	10	0000000	0000
E	Vacuum Relief	Buna-N	3/4 NPSM	Male	0.5 to 4	Vent	0000000	0000	10	0000000	0000
F	Standard	Buna-N	2 NPSM	Male	—	—	0000000	0000	10	0000000	00000
G	Pressure Relief	Buna-N	2 NPSM	Male	13 to 15	Vent	0000000	00000	10	0000000	00000

316 Stainless Steel

Style H

Style J

PTFE Seal—Plugs with PTFE seals stand up to corrosive chemicals such as nitric acid.

Drum Plug Caps—Drum-plug caps (sold separately) fit over drum plugs to provide dust protection as well as evidence of tampering. They have a breakaway seal and are for one-time use.

Drum Plugs							Drum Plug Caps
Style	Drum Plug Type	Seal Material	Pipe/Thread Size	Gender		Each	Pkg. Qty.		Pkg.
H	Standard	Buna-N	3/4 NPT	Male	0000000	000000	10	0000000	00000
H	Standard	PTFE	3/4 NPSM	Male	00000000	00000	10	0000000	0000
J	Standard	Buna-N	2 NPT	Male	0000000	00000	10	0000000	00000
J	Standard	PTFE	2 NPSM	Male	00000000	00000	10	0000000	00000

Drum Vents


Style A	Style B	Style C	Style D	Style E

Prevent drum failure by using these vents to release pressure and vacuum buildup caused by draining liquids and sudden temperature changes. In case of fire, a flame arrester prevents flashback into the drum.

Style D—Style D has a removable cap so it can be used as a fill opening.

Style E—Style E comes with two carbon filters. The filter traps 99% of vapors.

		Activation
	Style	Pressure Relief	Vacuum Relief	Seal Material	Flame Arrester Material	Pipe Size	Gender	Opening Pressure Range, psi	Certification		Each
For Horizontal Drums







				316 Stainless Steel

				A	Automatic	Manual	Fluoroelastomer	304 Stainless Steel	2 NPT	Male	3 to 8	FM Approved	0000000	0000000




						Brass

						A	Automatic	Manual	Buna-N	Brass	2 NPT	Male	3 to 8	FM Approved	0000000	00000


						For Vertical Drums







										Polyethylene

										B	Automatic	Automatic	Buna-N	304 Stainless Steel	2 NPT	Male	3 to 8	FM Approved	0000000	000000


										B	Automatic	Automatic	Buna-N	Zinc-Plated Steel	2 NPT	Male	3 to 8	FM Approved	0000000	00000




												Brass

												C	Automatic	Automatic	Buna-N	Brass	2 NPT	Male	3 to 8	FM Approved	000000	000000


												D	Automatic	Automatic	Buna-N	Brass	2 NPT	Male	3 to 8	FM Approved	0000000	000000
												E	Automatic	Automatic	Buna-N	Brass	2 NPT	Male	3 to 8	FM Approved	0000000	000000

Square Drive Drum Plug Sockets


Shown with Ratchet Wrench (Not Included)

Instead of carrying around a large drum plug wrench, keep these sockets in your toolbox and turn with a ratchet wrench. Also known as bung wrenches, they are used to install and remove screw-in drum plugs.

For Drum Plug
Style	Size	Material	Square Drive Size	OD	Overall Lg.	Material		Each
2, 4, 5, 6, 7, 8, 12	3/4", 2"	Plastic, Stainless Steel, Steel	1/2"	1 15/16"	2 3/4"	Steel	0000000	0000000

Locking Drum Plug Caps


Male	Female

Prevent tampering with the contents of your drum while allowing access for filling.

	Gender	Dia.	Ht.	Lock Type	Lock Included	For Max. Shackle Dia.		Each
Iron



	2 NPT	Male	3 1/8"	2 1/4"	Padlockable	No	7/16"	0000000	000000


	2 NPT	Female	3 1/8"	1 3/8"	Padlockable	No	5/16"	0000000	00000
	3 NPT	Female	4 1/2"	2"	Padlockable	No	1/2"	0000000	00000
	4 NPT	Female	5 1/4"	2 1/4"	Padlockable	No	1/2"	0000000	000000

Drum Plug Gaskets

Add a gasket or replace one that's worn out to ensure a tight seal.

	Max. Temp., ° F	Pkg. Qty.		Pkg.
For 3/4 Pipe Size



	Polyethylene	350	50	0000000	000000


	Buna-N	450	100	0000000	00000
	EPDM	450	100	0000000	00000


	For 2 Pipe Size



			Polyethylene	350	50	0000000	00000


			Buna-N	450	50	0000000	00000
			EPDM	450	50	0000000	00000


			For M64 Thread Size



					EPDM	200	10	0000000	00000

Drum Locks

For Closed-Head Drums

Padlockable

Padlockable—Padlockable locks for closed-head drums replace the plugs on _3/4" and 2" drum openings. Made of brass, they're non-sparking and resist corrosion in wet environments. Slide the bar through the hole in each plug and lock with a padlock (not included).

Lock Type	Material	Seal Material	For Pipe Size	Thread Type	Lock Included	For Max. Shackle Dia.		Each
Padlockable	Brass	Buna-N	3/4, 2	NPT	No	5/16"	0000000	0000000

Nonsparking Drum Plug Wrenches


Style A	Style B	Style C	Style D

These wrenches inhibit sparking and are corrosion resistant. Also known as bung wrenches, they are used to install and remove screw-in drum plugs.

	For Drum Plug
Style	Style	Size	Material	Overall Lg.	Material	Magnetic Properties	Certification		Each



	A	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12	3/4", 2"	Plastic, Steel	10 1/2"	Aluminum	—	—	0000000	000000


	B	1, 2, 4, 5, 6, 7, 8, 9, 12, 14	3/4", 2"	Plastic, Steel	15 1/4"	Aluminum Bronze	Nonmagnetic	FM Approved	000000	000000
	C	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14	3/4", 2"	Plastic, Steel	15 1/2"	Manganese Bronze	—	—	0000000	000000
	D	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12	3/4", 2"	Plastic, Steel	18"	Manganese Bronze	—	—	0000000	000000

Drum Plug Wrenches


Style A	Style B

Also known as bung wrenches, these tools install and remove screw-in drum plugs.

	For Drum Plug
Style	Style	Size	Material	Overall Lg.	Material		Each



	A	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14	3/4", 2"	Plastic, Steel	15 5/8"	Iron	000000	000000


	B	1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12	3/4", 2"	Plastic, Steel	18"	Iron	0000000	000000

Torque-Limiting Drum Plug Wrenches


Style A	Style B

When the set torque is reached, these wrenches slip to disengage and stop turning the plug, preventing overtightening. Also known as bung wrenches, they are used to install and remove screw-in drum plugs.

Drum Plug Wrenches with Calibration Certificate Traceable to NIST—Calibration certificate traceable to NIST states the product has passed a test for accuracy.

		For Drum Plug						Accuracy
	Style	Style	Material	Gasket Material	Size	Torque Setting	Torque-Limiting Direction	Clockwise	Counterclockwise	Overall Lg.	Material	Grip Material		Each
Drum Plug Wrenches with Calibration Certificate Traceable to NIST







				ft·lbf

				A	3, 4, 9, 10	Plastic	Rubber	3/4" 2"	9 ft·lbf 20 ft·lbf	Clockwise and Counterclockwise	-2 ft·lbf to 6 ft·lbf -3 ft·lbf to 6 ft·lbf	-2 ft·lbf to 6 ft·lbf -3 ft·lbf to 6 ft·lbf	14"	Steel	Rubber	0000000	0000000


				A	4, 12	Steel	Plastic	3/4" 2"	20 ft·lbf 40 ft·lbf	Clockwise and Counterclockwise	-2 ft·lbf to 6 ft·lbf -3 ft·lbf to 6 ft·lbf	-2 ft·lbf to 6 ft·lbf -3 ft·lbf to 6 ft·lbf	14"	Steel	Rubber	0000000	000000
				A	4, 12	Steel	Rubber	3/4" 2"	15 ft·lbf 30 ft·lbf	Clockwise and Counterclockwise	-2 ft·lbf to 6 ft·lbf -3 ft·lbf to 6 ft·lbf	-2 ft·lbf to 6 ft·lbf -3 ft·lbf to 6 ft·lbf	14"	Steel	Rubber	0000000	000000


				Other Drum Plug Wrenches







								ft·lbf

								B	1, 7	Stainless Steel	Rubber	3/4" 2"	13 ft·lbf 20 ft·lbf	Clockwise	-2 ft·lbf to 2 ft·lbf -2 ft·lbf to 2 ft·lbf	—	14"	Steel	Rubber	0000000	000000