Drum Caps | McMaster-Carr

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Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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Compliant with Exemptions

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Minimum Pressure

Finish

Number of Top Openings

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91 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	9030T81	000000	10	8983T31	00000	8983T44	0000000
A	Standard	White	—	3/4 NPSM	Male	125	—	—	5	9030T61	0000	10	8983T31	0000	8983T44	000000
B	Pressure Relief, Vacuum Relief	White	EPDM	2 NPSM	Male	125	1 to 4	Vent	5	9030T82	00000	10	8983T32	00000	8983T45	000000
C	Standard	White	—	2 NPSM	Male	125	—	3/4 NPSM Faucet Knockout	5	9030T63	00000	10	8983T32	00000	8983T45	000000
D	Standard	White	EPDM	M64 Metric	Male	125	—	3/4 NPSM Faucet Knockout	5	9030T64	00000	10	8983T32	00000	8983T45	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	8983T35	000000	10	8983T31	00000	8983T44	0000000
A	Standard	Gray	—	3/4 NPSM	Male	125	—	—	5	8983T41	00000	10	8983T31	0000	8983T44	000000
B	Pressure Relief, Vacuum Relief	White	EPDM	2 NPSM	Male	125	1 to 4	Vent	5	8983T36	00000	10	8983T32	00000	8983T45	000000
C	Standard	Gray	—	2 NPSM	Male	125	—	3/4 NPSM Faucet Knockout	5	8983T43	00000	10	8983T32	00000	8983T45	000000
D	Standard	White	—	M64 Metric	Male	125	—	3/4 NPSM Faucet Knockout	5	8983T37	00000	10	8983T32	00000	8983T45	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	8983T55	00000	10	8983T26	00000
E	Standard	Buna-N	3/4 NPSM	Male	—	—	8983T9	0000	10	8983T26	0000
E	Vacuum Relief	Buna-N	3/4 NPSM	Male	0.5 to 4	Vent	8983T53	0000	10	8983T26	0000
F	Standard	Buna-N	2 NPSM	Male	—	—	8983T11	0000	10	8983T29	00000
G	Pressure Relief	Buna-N	2 NPSM	Male	13 to 15	Vent	8983T13	00000	10	8983T28	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	8983T16	000000	10	8983T27	00000
H	Standard	PTFE	3/4 NPSM	Male	8983T612	00000	10	8983T27	0000
J	Standard	Buna-N	2 NPT	Male	8983T17	00000	10	8983T29	00000
J	Standard	PTFE	2 NPSM	Male	8983T611	00000	10	8983T28	00000

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"	4906K21	000000


	2 NPT	Female	3 1/8"	1 3/8"	Padlockable	No	5/16"	4906K23	00000
	3 NPT	Female	4 1/2"	2"	Padlockable	No	1/2"	4906K27	00000
	4 NPT	Female	5 1/4"	2 1/4"	Padlockable	No	1/2"	4906K29	000000

Drum Covers

Polyethylene

	Dia.	Thk.	Color	Max. Temp., ° F	Certification		Each
For Open-Head Drums with Nut-and-Bolt Closing Rings



	55	23 3/8"	0.04"	Black	175	—	4503T12	000000


	55	23 3/8"	0.04"	Clear	175	—	4503T26	00000
	55	23 1/2"	0.04"	Gray	175	C-UL Listed, UL Listed	4503T18	00000


	For Open-Head Drums



			55	23 3/8"	0.04"	Gray	175	C-UL Listed, UL Listed	4503T19	00000


			For Closed-Head Drums



					30	18 1/2"	0.04"	Gray	175	C-UL Listed, UL Listed	4503T15	00000


					55	22 5/8"	0.04"	Gray	175	C-UL Listed, UL Listed	4503T16	00000
					55	22 3/4"	0.04"	Black	175	—	4503T14	00000
					55	22 3/4"	0.04"	Clear	175	—	4503T25	00000

Galvanized Steel

Steel drum covers have a beaded rim to eliminate sharp edges.

	Dia.	Ga.		Each
For Open-Head Drums



	55	24 1/2"	26	4503T22	000000


	For Closed-Head Drums



			55	23 7/8"	26	4503T21	00000

Lockable Breather Vents with Cap

Secure access to vented openings in pipe and tanks—the cap can be locked to prevent tampering. These breather vents allow you to add a filling port to your hydraulic tank while protecting against excess pressure and vacuum. Use them to stop debris from entering your tank. Breather vents mount on top of standard tank openings with included hardware. Padlock is not included.

Flange Mount


Steel with 304 Stainless Steel Screen	Steel with Nylon Plastic Screen

	Max. Pressure	Ht.	For Use With	Cap Material	Screen Material	No. of Bolt Holes	Bolts Included	Removes Particle Size Down To, μm	For Max. Padlock Shackle Dia.		Each
Steel Body



	2 1/8"	Not Rated	5 1/8"	Air, Oil	Steel	304 Stainless Steel	6	Yes	10	3/8"	3853N13	000000


	2 1/8"	Not Rated	5 1/8"	Air, Oil	Steel	304 Stainless Steel	6	Yes	40	3/8"	4473K45	00000
	2 1/8"	Not Rated	6 1/8"	Air, Oil	Steel	Nylon	6	Yes	10	3/8"	3853N12	00000
	2 1/8"	Not Rated	6 1/8"	Air, Oil	Steel	Nylon	6	Yes	40	3/8"	3853N11	00000

Threaded NPT Male

Aluminum Body

	Max. Pressure	Max. Temp., ° F	Ht.	Dia.	For Use With	Cap Material	Screen Material	For Max. Padlock Shackle Dia.		Each
Aluminum Body and Fitting



	2	Not Rated	200	4 1/2"	5 5/8"	Air, Oil, Water	Aluminum	Stainless Steel	3/8"	4906K11	000000

Dust Covers for Drums

PVC—PVC covers resist chemicals better than polyethylene covers.

	Color	Thk., mil	Max. Temp., ° F	Pkg. Qty.		Pkg.
PVC



	55	White	8	Not Rated	1	4104T2	000000


	55	Clear	8	Not Rated	1	4104T9	0000


	Polyethylene



			55	Clear	4	175	5	4104T5	00000


			30	Clear	4	175	5	4104T4	00000

Steel Drum Lids


Lids with No Top Openings	Lids with 2 Top Openings

			Lid					Openings				Each
	For Drum Cap., gal.	Ga.	Type	Material	Color	Seal Material	Liner Material	Pipe Size	Gender	Includes		1-3	4-Up
Lids with No Top Openings



		55	16	Tight Fitting	Painted Steel	White	EPDM	—	—	—	—	4115T93	000000	000000


		55	18	Tight Fitting	Painted Steel	White	EPDM	—	—	—	—	4115T35	00000	00000
		30, 20	16	Tight Fitting	Painted Steel	White	EPDM	—	—	—	—	4115T36	00000	00000
		30, 20	18	Tight Fitting	Painted Steel	White	EPDM	—	—	—	—	4115T27	00000	00000
		16, 10	18	Tight Fitting	Painted Steel	White	EPDM	—	—	—	—	4115T831	00000	00000
		16, 10	20	Tight Fitting	Painted Steel	White	EPDM	Epoxy	—	—	—	4115T519	00000	00000


		Lids with 2 Top Openings



				55	18	Tight Fitting	Painted Steel	White	EPDM	—	2 NPSM, 3/4 NPSM	Female	Steel Plugs	4115T272	00000	00000


				30, 20	18	Tight Fitting	Painted Steel	White	EPDM	—	2 NPSM, 3/4 NPSM	Female	Steel Plugs	4115T75	00000	00000
				16, 10	20	Tight Fitting	Painted Steel	White	EPDM	—	2 NPSM, 3/4 NPSM	Female	Steel Plugs	4115T912	00000	00000

Drum Locks

For Open-Head Drums

Locks for open-head drums replace the standard _5/8"-11 bolt on the closing ring and lock with a padlock (not included).

Lock Type	For Closing Ring Type	Material	Thread Size	Lock Included	For Max. Shackle Dia.		Each
Padlockable	Nut and Bolt	Brass	5/8"-11	No	5/16"	1900A42	000000

For Closed-Head Drums


Padlockable	Keyed Lock

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).

Keyed Lock—Keyed locks for closed-head drums fit over standard drum plugs and caps. Use the included keys to secure.

Lock Type	Material	Seal Material	For Pipe Size	Thread Type	Lock Included	For Max. Shackle Dia.	No. of Locks	No. of Keys Included		Each
Padlockable	Brass	Buna-N	3/4, 2	NPT	No	5/16"	—	—	1900A43	0000000
Keyed	Zinc Alloy	—	3/4, 2	—	Yes	—	2	2	1900A11	00000

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	8983T25	000000


	Buna-N	450	100	8983T24	00000
	EPDM	450	100	8983T51	00000


	For 2 Pipe Size



			Polyethylene	350	50	8983T23	00000


			Buna-N	450	50	8983T33	00000
			EPDM	450	50	8983T52	00000


			For M64 Thread Size



					EPDM	200	10	8983T56	00000

Antistatic Dust Covers for Drums

An additive on these polyethylene covers prevents static charge from building up on the surface.

	Color	Thk., mil	Max. Temp., ° F	Performance	Surface Resistivity, ohm/sq.	Pkg. Qty.		Pkg.
Polyethylene



	55	Pink	4	175	Antistatic	1× 10^11	5	4104T8	000000


	30	Pink	4	175	Antistatic	1× 10^11	5	4104T7	00000

Gaskets for Steel and Stainless Steel Drums

For Drum Cap., gal.	Material		Each
65	EPDM	4392T911	000000
55	EPDM	4392T72	00000
30, 20	EPDM	4115T32	00000
16, 10	EPDM	4115T832	0000

Drum Locking Rings for Steel and Stainless Steel Drums


Nut-and-Bolt Closing Ring	Leverlock Closing Ring

	Closing Ring Material		Each
Nut-and-Bolt Closing Ring



	110, 65	Steel	4115T151	000000


	55	Steel	4115T92	00000
	30, 20	Steel	4115T82	00000
	16, 10	Steel	4115T833	00000


	Leverlock Closing Ring



			55	Steel	4482T94	00000


			30, 20	Steel	4115T79	00000
			16, 10	Steel	4482T92	00000

Food and Beverage Gaskets for Sanitary Stainless Steel Drums

Seal lids onto sanitary drums. These gaskets are FDA compliant for direct contact with food.

For Drum Cap., gal.	Material	Food Industry Std.		Each
55, 40	EPDM	FDA Compliant 21 CFR 177.2600	8020N217	000000
20	EPDM	FDA Compliant 21 CFR 177.2600	8020N216	00000

Stainless Steel Drum Lids


Lids with No Top Openings	Lids with 2 Top Openings

			Lid			Openings
	For Drum Cap., gal.	Ga.	Type	Material	Seal Material	Pipe Size	Gender	Includes		Each
Lids with No Top Openings



		55	16	Tight Fitting	304 Stainless Steel	EPDM	—	—	—	4392T46	0000000


		30, 20	16	Tight Fitting	304 Stainless Steel	EPDM	—	—	—	4392T76	000000
		16, 10, 8	20	Tight Fitting	304 Stainless Steel	EPDM	—	—	—	4392T77	000000


		Lids with 2 Top Openings



				55	16	Tight Fitting	304 Stainless Steel	EPDM	2 BSPP, 3/4 BSPP	Female	Stainless Steel Plugs	4392T81	000000


				55	16	Tight Fitting	316 Stainless Steel	EPDM	2 BSPP, 3/4 BSPP	Female	Stainless Steel Plugs	4392T83	000000
				30	16	Tight Fitting	304 Stainless Steel	EPDM	2 BSPP, 3/4 BSPP	Female	Stainless Steel Plugs	4392T82	000000
				30	16	Tight Fitting	316 Stainless Steel	EPDM	2 BSPP, 3/4 BSPP	Female	Stainless Steel Plugs	4392T84	000000