Bottle Stoppers | McMaster-Carr

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Number of Holes

Material

Color

Height

Tapered Plug Trade Size

Hardness

Maximum Temperature

Hole Diameter

OD at Large End

Performance

REACH

RoHS

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

For Use With

OD at Small End

Cork Trade Size

210 Products

Performance

Chemical Resistant

Won't degrade from exposure to chemical cleaning or finishing

101 products

High Temperature

Withstand temperatures of 350° F and above

73 products

Environment

Food and Beverage

Nonporous and super smooth to prevent bacteria growth

12 products

Construction

Vented

Air circulates and permits heat, fumes, and pressure to escape

55 products

Tapered Plugs

Don't worry about having the exact size you need on hand—these plugs are shaped to fit a range of diameters. Push in until they're snug to mask holes during coating and finishing.

SBR Rubber—A good multipurpose option. Flexible and durable, these plugs can be used over and over without cracking or breaking down.

Chemical-Resistant EPDM—These plugs won't degrade from exposure to cleaners, acids, and solvents.

High-Temperature Silicone Rubber—Withstand multiple passes when paint baking, powder coating, and electroplating.

Cork—The original plug material, cork is compressible and flexible for a tight fit. These plugs are also slightly porous to allow some gas exchange. They are a sustainable and biodegradable alternative to rubber.

1 Hole and 2 Holes—Feed tubing through holes to connect bottles to other lab equipment, or insert an instrument such as a thermometer. The holes also allow pressure to escape.

						0 Holes			1 Hole			2 Holes
	For ID	Ht.	Trade Size	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
SBR Rubber
0 Holes 1 Hole 2 Holes


		5/64" to 3/16"	23/32"	A	200	Black	10	9545K37	00000	—	———	0	—	———	0
		1/8" to 1/4"	31/32"	B	200	Black	10	9545K38	0000	—	———	0	—	———	0
		13/64" to 11/32"	31/32"	C	200	Black	10	9545K39	0000	—	———	0	—	———	0
		1/4" to 27/64"	31/32"	D	200	Black	10	9545K41	0000	10	9545K48	00000	—	———	0
		3/8" to 27/64"	23/32"	000	200	Black	50	9545K51	0000	50	9545K57	0000	50	9545K69	00000
		7/16" to 35/64"	31/32"	00	200	Black	50	9545K11	0000	50	9545K24	0000	50	9545K71	0000
		17/32" to 39/64"	31/32"	0	200	Black	40	9545K12	0000	40	9545K25	0000	40	9545K72	0000
		19/32" to 45/64"	31/32"	1	200	Black	30	9545K13	0000	30	9545K26	0000	30	9545K73	0000
		43/64" to 47/64"	31/32"	2	200	Black	25	9545K14	0000	25	9545K27	0000	25	9545K74	0000
		49/64" to 57/64"	31/32"	3	200	Black	25	9545K15	00000	25	9545K28	00000	25	9545K76	00000


		53/64" to 63/64"	31/32"	4	200	Black	10	9545K16	0000	10	9545K29	0000	10	9545K77	0000
		61/64" to 1 1/64"	31/32"	5	200	Black	10	9545K17	0000	10	9545K31	0000	10	9545K78	0000
		63/64" to 1 3/64"	31/32"	5 1/2	200	Black	10	9545K52	0000	10	9545K58	0000	10	9545K79	0000
		1 5/64" to 1 13/64"	31/32"	6	200	Black	10	9545K18	0000	10	9545K32	0000	10	9545K91	0000
		1 7/64" to 1 19/64"	31/32"	6 1/2	200	Black	10	9545K42	00000	10	9545K49	00000	10	9545K92	00000
		1 15/64" to 1 27/64"	31/32"	7	200	Black	5	9545K19	0000	5	9545K33	0000	5	9545K93	0000
		1 17/64" to 1 31/64"	31/32"	7 1/2	200	Black	5	9545K43	0000	5	9545K64	0000	5	9545K94	0000
		1 23/64" to 1 9/16"	31/32"	8	200	Black	5	9545K21	0000	5	9545K34	0000	5	9545K95	0000
		1 29/64" to 1 5/8"	31/32"	8 1/2	200	Black	5	9545K44	0000	5	9545K65	0000	5	9545K96	0000
		1 33/64" to 1 23/32"	31/32"	9	200	Black	5	9545K22	00000	5	9545K75	00000	5	9545K97	00000


		1 35/64" to 1 3/4"	31/32"	9 1/2	200	Black	5	9545K45	00000	5	9545K66	00000	5	9545K98	00000
		1 45/64" to 1 29/32"	31/32"	10	200	Black	5	9545K23	00000	5	9545K36	00000	5	9545K99	00000
		1 53/64" to 2 1/32"	31/32"	10 1/2	200	Black	5	9545K46	00000	5	9545K67	00000	5	9545K101	00000
		1 59/64" to 2 5/32"	31/32"	11	200	Black	5	9545K53	00000	5	9545K59	00000	5	9545K102	00000
		2 1/64" to 2 13/32"	31/32"	11 1/2	200	Black	1	9545K54	0000	1	9545K61	0000	1	9545K103	0000
		2 11/64" to 2 15/32"	31/32"	12	200	Black	1	9545K47	0000	1	9545K68	0000	1	9545K104	0000
		2 21/64" to 2 5/8"	31/32"	13	200	Black	1	9545K55	0000	1	9545K62	0000	1	9545K105	0000
		2 31/64" to 2 7/8"	1 3/8"	13 1/2	200	Black	1	9545K56	0000	1	9545K63	0000	1	9545K106	0000
		3" to 3 15/32"	1 17/32"	14	200	Black	1	9545K81	00000	1	9545K82	00000	1	9545K107	00000
		3 11/32" to 3 15/16"	1 17/32"	15	200	Black	1	9545K85	00000	1	9545K86	00000	1	9545K108	00000


		3 19/32" to 4 7/8"	1 31/32"	16	200	Black	1	9545K87	00000	1	9545K89	00000	1	9545K109	00000


		Chemical-Resistant EPDM
		0 Holes


				3/64" to 1/16"	5/8"	—	300	Black	100	6448K101	00000	—	———	0	—	———	0
				1/16" to 5/64"	5/8"	—	300	Black	100	6448K71	00000	—	———	0	—	———	0
				5/64" to 1/8"	3/4"	—	300	Black	100	6448K87	00000	—	———	0	—	———	0
				9/64" to 3/16"	3/4"	—	300	Black	50	6448K88	00000	—	———	0	—	———	0
				13/64" to 9/32"	5/8"	—	300	Black	50	6448K89	00000	—	———	0	—	———	0
				17/64" to 5/16"	3/4"	—	300	Black	25	6448K91	00000	—	———	0	—	———	0
				17/64" to 3/8"	1"	—	300	Black	50	6448K102	00000	—	———	0	—	———	0
				21/64" to 7/16"	7/8"	—	300	Black	25	6448K92	0000	—	———	0	—	———	0
				33/64" to 19/32"	1"	—	300	Black	10	6448K93	0000	—	———	0	—	———	0
				37/64" to 11/16"	1"	—	300	Black	10	6448K94	0000	—	———	0	—	———	0


				41/64" to 23/32"	1"	—	300	Black	10	6448K95	00000	—	———	0	—	———	0
				47/64" to 7/8"	1"	—	300	Black	10	6448K96	00000	—	———	0	—	———	0
				51/64" to 15/16"	1"	—	300	Black	10	6448K103	00000	—	———	0	—	———	0
				1 1/16" to 1 3/16"	1"	—	300	Black	10	6448K104	00000	—	———	0	—	———	0
				1 7/32" to 1 3/8"	1"	—	300	Black	10	6448K105	00000	—	———	0	—	———	0
				1 21/64" to 1 35/64"	1"	—	300	Black	10	6448K106	00000	—	———	0	—	———	0
1 1/2" to 1 11/16"				1"	—	300	Black	10	6448K107	00000	—	———	0	—	———	0
1 29/32" to 2 9/64"	1"			—	300	Black	5	6448K108	00000	—	———	0	—	———	0
2" to 2 13/32"	1"			—	300	Black	5	6448K109	00000	—	———	0	—	———	0
2 5/32" to 2 7/16"	1"			—	300	Black	5	6448K121	00000	—	———	0	—	———	0


2 15/32" to 2 57/64"	1 1/2"			—	300	Black	1	6448K122	00000	—	———	0	—	———	0
3 3/64" to 3 7/16"	1 1/2"			—	300	Black	1	6448K123	00000	—	———	0	—	———	0
3 19/64" to 3 15/16"	1 1/2"			—	300	Black	1	6448K124	00000	—	———	0	—	———	0
3 35/64" to 4 15/16"	2"			—	300	Black	1	6448K125	00000	—	———	0	—	———	0
4 3/64" to 4 15/16"	2"			—	300	Black	1	6448K126	00000	—	———	0	—	———	0
4 19/64" to 5 9/64"	2"			—	300	Black	1	6448K127	00000	—	———	0	—	———	0
4 51/64" to 5 47/64"	2 1/4"			—	300	Black	1	6448K128	00000	—	———	0	—	———	0
5 3/64" to 6 1/16"	2 1/2"			—	300	Black	1	6448K129	00000	—	———	0	—	———	0


High-Temperature Silicone Rubber
0 Holes


				1/32" to 3/64"	5/8"	—	570	Off-White	50	9277K84	00000	—	———	0	—	———	0
				1/32" to 3/32"	1"	—	570	Red	50	9277K201	0000	—	———	0	—	———	0
				1/32" to 1/8"	5/8"	—	570	Clear	50	9277K18	0000	—	———	0	—	———	0
				3/64" to 1/16"	3/4"	—	570	Off-White	50	9277K851	00000	—	———	0	—	———	0
				3/64" to 7/64"	5/8"	—	570	Clear	50	9277K41	0000	—	———	0	—	———	0
				3/64" to 13/64"	1 1/8"	—	570	Clear	50	9277K21	00000	—	———	0	—	———	0
				1/16" to 11/64"	3/4"	—	570	Red	50	9277K202	00000	—	———	0	—	———	0
				1/16" to 13/64"	3/4"	—	570	Clear	50	9277K23	00000	—	———	0	—	———	0
				5/64" to 7/64"	5/8"	—	570	Green	50	9277K35	0000	—	———	0	—	———	0
				5/64" to 11/64"	5/8"	—	570	Pink	50	9277K36	00000	—	———	0	—	———	0


				1/8" to 1/2"	2"	—	570	Red	10	9277K204	0000	—	———	0	—	———	0
				9/64" to 15/64"	3/4"	—	570	Black	50	9277K37	00000	—	———	0	—	———	0
				9/64" to 23/64"	1 1/4"	—	570	Red	25	9277K81	00000	—	———	0	—	———	0
				13/64" to 21/64"	5/8"	—	570	Red	50	9277K38	00000	—	———	0	—	———	0
				1/4" to 7/16"	1"	—	570	Red	50	9277K203	00000	—	———	0	—	———	0
				17/64" to 23/64"	3/4"	—	570	Yellow	25	9277K39	0000	—	———	0	—	———	0
				17/64" to 27/64"	1"	—	570	Clear	25	9277K87	00000	—	———	0	—	———	0
				9/32" to 23/64"	3/4"	—	570	Off-White	50	9277K101	00000	—	———	0	—	———	0
				21/64" to 31/64"	13/16"	—	570	Clear	10	9277K52	0000	—	———	0	—	———	0
				11/32" to 15/32"	3/4"	—	570	Clear	10	9277K28	00000	—	———	0	—	———	0


		11/32" to 1/2"		13/16"	—	570	Clear	10	9277K26	00000	—	———	0	—	———	0
		23/64" to 29/64"	13/16"	—	570	Clear	25	9277K88	00000	—	———	0	—	———	0
		13/32" to 19/32"	1"	—	570	Red	25	9277K205	00000	—	———	0	—	———	0
		27/64" to 37/64"	1"	—	570	Clear	25	9277K89	00000	—	———	0	—	———	0
		29/64" to 39/64"	13/16"	—	570	Green	10	9277K53	0000	—	———	0	—	———	0
		29/64" to 43/64"	1"	—	570	Clear	10	9277K91	00000	—	———	0	—	———	0
		1/2" to 21/32"	1"	—	570	Pink	10	9277K33	00000	—	———	0	—	———	0
		33/64" to 41/64"	1"	—	570	Red	25	9277K82	00000	—	———	0	—	———	0
		37/64" to 47/64"	1"	—	570	Black	10	9277K54	00000	—	———	0	—	———	0
		39/64" to 23/32"	1"	—	570	Off-White	10	9277K102	00000	—	———	0	—	———	0


		41/64" to 49/64"	1"	—	570	Clear	10	9277K92	00000	—	———	0	—	———	0
		41/64" to 51/64"	1"	—	570	Red	10	9277K83	00000	—	———	0	—	———	0
		47/64" to 59/64"	1"	—	570	Yellow	10	9277K55	00000	—	———	0	—	———	0
		3/4" to 1"	1"	—	570	Clear	5	9277K58	00000	—	———	0	—	———	0
		49/64" to 29/32"	1"	—	570	Off-White	5	9277K103	00000	—	———	0	—	———	0
		51/64" to 1"	1"	—	570	Clear	5	9277K76	00000	—	———	0	—	———	0
		53/64" to 31/32"	1"	—	570	Off-White	5	9277K93	00000	—	———	0	—	———	0
		29/32" to 1 1/16"	1"	—	570	Red	10	9277K206	00000	—	———	0	—	———	0
		59/64" to 1 3/64"	1"	—	570	Clear	5	9277K94	00000	—	———	0	—	———	0
		61/64" to 1 5/64"	1"	—	570	Clear	5	9277K104	00000	—	———	0	—	———	0


		1 3/64" to 1 1/4"	1"	—	570	Green	5	9277K77	00000	—	———	0	—	———	0
		1 1/16" to 1 21/64"	1"	—	570	Red	5	9277K207	00000	—	———	0	—	———	0
		1 5/64" to 1 7/32"	1"	—	570	Off-White	5	9277K95	00000	—	———	0	—	———	0
		1 3/16" to 1 7/16"	1"	—	570	Blue	2	9277K61	0000	—	———	0	—	———	0
		1 19/64" to 1 1/2"	1"	—	570	Off-White	2	9277K96	00000	—	———	0	—	———	0
		1 5/16" to 1 5/8"	1"	—	570	Clear	1	9277K63	0000	—	———	0	—	———	0
		1 21/64" to 1 19/32"	1"	—	570	Clear	1	9277K49	0000	—	———	0	—	———	0
		1 15/32" to 1 3/4"	1"	—	570	Red	1	9277K64	0000	—	———	0	—	———	0
		1 31/64" to 1 3/4"	1"	—	570	Red	1	9277K31	0000	—	———	0	—	———	0
		1 41/64" to 1 61/64"	1"	—	570	Clear	1	9277K62	0000	—	———	0	—	———	0


		1 21/32" to 1 15/16"	1"	—	570	Clear	1	9277K97	00000	—	———	0	—	———	0
1 13/16" to 2 1/64"		1"	—	570	Off-White	2	9277K98	00000	—	———	0	—	———	0
1 57/64" to 2 3/16"	1"	—	570	Purple	1	9277K79	0000	—	———	0	—	———	0
1 31/32" to 2 15/32"	1"	—	570	Clear	1	9277K67	0000	—	———	0	—	———	0
1 63/64" to 2 15/32"	1"	—	570	Red	1	9277K34	0000	—	———	0	—	———	0
2 9/64" to 2 1/2"	1"	—	570	Red	1	9277K68	00000	—	———	0	—	———	0
2 5/16" to 2 21/32"	1"	—	570	Clear	1	9277K106	00000	—	———	0	—	———	0
2 29/64" to 2 15/16"	1 3/8"	—	570	Red	1	9277K69	00000	—	———	0	—	———	0
3 1/64" to 3 17/32"	1 1/2"	—	570	Red	1	9277K71	00000	—	———	0	—	———	0
3 17/64" to 4 1/32"	1 1/2"	—	570	Red	1	9277K73	00000	—	———	0	—	———	0
3 33/64" to 4 63/64"	2"	—	570	Red	1	9277K75	00000	—	———	0	—	———	0

Cork
0 Holes


		7/64" to 5/32"	1/2"	0000	150	Brown	100	9566K11	00000	—	———	0	—	———	0
		11/64" to 15/64"	1/2"	000	150	Brown	100	9566K12	00000	—	———	0	—	———	0
		1/4" to 9/32"	1/2"	00	150	Brown	100	9566K13	00000	—	———	0	—	———	0
		19/64" to 21/64"	1/2"	0	150	Brown	100	9566K14	00000	—	———	0	—	———	0
		11/32" to 13/32"	5/8"	1	150	Brown	100	9566K15	00000	—	———	0	—	———	0
		27/64" to 29/64"	11/16"	2	150	Brown	100	9566K16	00000	—	———	0	—	———	0
		15/32" to 17/32"	3/4"	3	150	Brown	100	9566K17	00000	—	———	0	—	———	0
		1/2" to 37/64"	13/16"	4	150	Brown	100	9566K18	00000	—	———	0	—	———	0
		9/16" to 21/32"	7/8"	5	150	Brown	100	9566K19	00000	—	———	0	—	———	0
		5/8" to 45/64"	15/16"	6	150	Brown	100	9566K2	00000	—	———	0	—	———	0


		43/64" to 25/32"	1"	7	150	Brown	100	9566K21	00000	—	———	0	—	———	0
		23/32" to 53/64"	1 1/16"	8	150	Brown	50	9566K22	00000	—	———	0	—	———	0
		49/64" to 29/32"	1 1/8"	9	150	Brown	50	9566K23	00000	—	———	0	—	———	0
		51/64" to 59/64"	1 1/4"	10	150	Brown	25	9566K24	0000	—	———	0	—	———	0
		7/8" to 1"	1 1/4"	11	150	Brown	25	9566K61	00000	—	———	0	—	———	0
		59/64" to 1 3/64"	1 1/4"	12	150	Brown	25	9566K62	00000	—	———	0	—	———	0
		1" to 1 1/8"	1 1/4"	13	150	Brown	25	9566K63	00000	—	———	0	—	———	0
		1 3/64" to 1 11/64"	1 1/4"	14	150	Brown	25	9566K25	00000	—	———	0	—	———	0
		1 11/64" to 1 19/64"	1 1/2"	16	150	Brown	25	9566K26	00000	—	———	0	—	———	0
		1 7/32" to 1 3/8"	1 1/2"	17	150	Brown	25	9566K101	00000	—	———	0	—	———	0


		1 19/64" to 1 27/64"	1 1/2"	18	150	Brown	10	9566K27	0000	—	———	0	—	———	0
		1 11/32" to 1 1/2"	1 1/2"	19	150	Brown	10	9566K102	0000	—	———	0	—	———	0
		1 27/64" to 1 35/64"	1 1/2"	20	150	Brown	10	9566K28	0000	—	———	0	—	———	0

Tapered Plugs for Food and Beverage

Nonporous and super smooth to prevent bacteria growth, these plugs are FDA compliant for use in food production. They’re often used as bottle stoppers to protect liquids from spills and contamination.

High-Temperature Silicone Rubber—Plugs can be autoclaved and sterilized without cracking or breaking down.

	Ht.	Trade Size	Max. Temp., ° F	Color	Specs. Met		Each
High-Temperature Silicone Rubber



	29/64" to 37/64"	1"	00	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K11	000000
	35/64" to 41/64"	1"	0	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K12	00000
	39/64" to 23/32"	1"	1	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K13	00000
	43/64" to 23/32"	1"	2	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K14	00000
	49/64" to 29/32"	1"	3	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K15	00000
	51/64" to 31/32"	1"	4	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K16	00000
	59/64" to 1"	1"	5	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K17	00000
	1 5/64" to 1 7/32"	1"	6	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K18	00000
	1 9/64" to 1 13/32"	1"	7	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K19	00000
	1 21/64" to 1 9/16"	1"	8	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K21	00000


	1 17/32" to 1 45/64"	1"	9	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K22	00000
	1 23/32" to 1 59/64"	1"	10	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	92835K23	00000