Bottle Stoppers | McMaster-Carr

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Color

Height

Material

Maximum Temperature

Hardness

Tapered Plug Trade Size

Hole Diameter

Number of Holes

Export Control Classification Number (ECCN)

EAR99

REACH

Compliant

Not Compliant

DFARS Specialty Metals

RoHS

OD at Large End

For Use With

Performance

Cork Trade Size

OD at Small End

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	0000000	00000	—	———	0	—	———	0
		1/8" to 1/4"	31/32"	B	200	Black	10	0000000	0000	—	———	0	—	———	0
		13/64" to 11/32"	31/32"	C	200	Black	10	0000000	0000	—	———	0	—	———	0
		1/4" to 27/64"	31/32"	D	200	Black	10	0000000	0000	10	0000000	00000	—	———	0
		3/8" to 27/64"	23/32"	000	200	Black	50	0000000	0000	50	0000000	0000	50	0000000	00000
		7/16" to 35/64"	31/32"	00	200	Black	50	0000000	0000	50	0000000	0000	50	0000000	0000
		17/32" to 39/64"	31/32"	0	200	Black	40	0000000	0000	40	0000000	0000	40	0000000	0000
		19/32" to 45/64"	31/32"	1	200	Black	30	0000000	0000	30	0000000	0000	30	0000000	0000
		43/64" to 47/64"	31/32"	2	200	Black	25	0000000	0000	25	0000000	0000	25	0000000	0000
		49/64" to 57/64"	31/32"	3	200	Black	25	0000000	00000	25	0000000	00000	25	0000000	00000
		53/64" to 63/64"	31/32"	4	200	Black	10	0000000	0000	10	0000000	0000	10	0000000	0000
		61/64" to 1 1/64"	31/32"	5	200	Black	10	0000000	0000	10	0000000	0000	10	0000000	0000
		63/64" to 1 3/64"	31/32"	5 1/2	200	Black	10	0000000	0000	10	0000000	0000	10	0000000	0000
		1 5/64" to 1 13/64"	31/32"	6	200	Black	10	0000000	0000	10	0000000	0000	10	0000000	0000
		1 7/64" to 1 19/64"	31/32"	6 1/2	200	Black	10	0000000	00000	10	0000000	00000	10	0000000	00000
		1 15/64" to 1 27/64"	31/32"	7	200	Black	5	0000000	0000	5	0000000	0000	5	0000000	0000
		1 17/64" to 1 31/64"	31/32"	7 1/2	200	Black	5	0000000	0000	5	0000000	0000	5	0000000	0000
		1 23/64" to 1 9/16"	31/32"	8	200	Black	5	0000000	0000	5	0000000	0000	5	0000000	0000
		1 29/64" to 1 5/8"	31/32"	8 1/2	200	Black	5	0000000	0000	5	0000000	0000	5	0000000	0000
		1 33/64" to 1 23/32"	31/32"	9	200	Black	5	0000000	00000	5	0000000	00000	5	0000000	00000
		1 35/64" to 1 3/4"	31/32"	9 1/2	200	Black	5	0000000	00000	5	0000000	00000	5	0000000	00000
		1 45/64" to 1 29/32"	31/32"	10	200	Black	5	0000000	00000	5	0000000	00000	5	0000000	00000
		1 53/64" to 2 1/32"	31/32"	10 1/2	200	Black	5	0000000	00000	5	0000000	00000	5	00000000	00000
		1 59/64" to 2 5/32"	31/32"	11	200	Black	5	0000000	00000	5	0000000	00000	5	00000000	00000
		2 1/64" to 2 13/32"	31/32"	11 1/2	200	Black	1	0000000	0000	1	0000000	0000	1	00000000	0000
		2 11/64" to 2 15/32"	31/32"	12	200	Black	1	0000000	0000	1	0000000	0000	1	00000000	0000
		2 21/64" to 2 5/8"	31/32"	13	200	Black	1	0000000	0000	1	0000000	0000	1	00000000	0000
		2 31/64" to 2 7/8"	1 3/8"	13 1/2	200	Black	1	0000000	0000	1	0000000	0000	1	00000000	0000
		3" to 3 15/32"	1 17/32"	14	200	Black	1	0000000	00000	1	0000000	00000	1	00000000	00000
		3 11/32" to 3 15/16"	1 17/32"	15	200	Black	1	0000000	00000	1	0000000	00000	1	00000000	00000
		3 19/32" to 4 7/8"	1 31/32"	16	200	Black	1	0000000	00000	1	0000000	00000	1	00000000	00000

		Chemical-Resistant EPDM
		0 Holes

				3/64" to 1/16"	5/8"	—	300	Black	100	00000000	00000	—	———	0	—	———	0
				1/16" to 5/64"	5/8"	—	300	Black	100	0000000	00000	—	———	0	—	———	0
				5/64" to 1/8"	3/4"	—	300	Black	100	0000000	00000	—	———	0	—	———	0
				9/64" to 3/16"	3/4"	—	300	Black	50	0000000	00000	—	———	0	—	———	0
				13/64" to 9/32"	5/8"	—	300	Black	50	0000000	00000	—	———	0	—	———	0
				17/64" to 5/16"	3/4"	—	300	Black	25	0000000	00000	—	———	0	—	———	0
				17/64" to 3/8"	1"	—	300	Black	50	00000000	00000	—	———	0	—	———	0
				21/64" to 7/16"	7/8"	—	300	Black	25	0000000	0000	—	———	0	—	———	0
				33/64" to 19/32"	1"	—	300	Black	10	0000000	0000	—	———	0	—	———	0
				37/64" to 11/16"	1"	—	300	Black	10	0000000	0000	—	———	0	—	———	0
				41/64" to 23/32"	1"	—	300	Black	10	0000000	00000	—	———	0	—	———	0
				47/64" to 7/8"	1"	—	300	Black	10	0000000	00000	—	———	0	—	———	0
				51/64" to 15/16"	1"	—	300	Black	10	00000000	00000	—	———	0	—	———	0
				1 1/16" to 1 3/16"	1"	—	300	Black	10	00000000	00000	—	———	0	—	———	0
				1 7/32" to 1 3/8"	1"	—	300	Black	10	00000000	00000	—	———	0	—	———	0
				1 21/64" to 1 35/64"	1"	—	300	Black	10	00000000	00000	—	———	0	—	———	0
				1 1/2" to 1 11/16"	1"	—	300	Black	10	00000000	00000	—	———	0	—	———	0
				1 29/32" to 2 9/64"	1"	—	300	Black	5	00000000	00000	—	———	0	—	———	0
				2" to 2 13/32"	1"	—	300	Black	5	00000000	00000	—	———	0	—	———	0
				2 5/32" to 2 7/16"	1"	—	300	Black	5	00000000	00000	—	———	0	—	———	0
				2 15/32" to 2 57/64"	1 1/2"	—	300	Black	1	00000000	00000	—	———	0	—	———	0
				3 3/64" to 3 7/16"	1 1/2"	—	300	Black	1	00000000	00000	—	———	0	—	———	0
				3 19/64" to 3 15/16"	1 1/2"	—	300	Black	1	00000000	00000	—	———	0	—	———	0
				3 35/64" to 4 15/16"	2"	—	300	Black	1	00000000	00000	—	———	0	—	———	0
				4 3/64" to 4 15/16"	2"	—	300	Black	1	00000000	00000	—	———	0	—	———	0
				4 19/64" to 5 9/64"	2"	—	300	Black	1	00000000	00000	—	———	0	—	———	0
				4 51/64" to 5 47/64"	2 1/4"	—	300	Black	1	00000000	00000	—	———	0	—	———	0
5 3/64" to 6 1/16"				2 1/2"	—	300	Black	1	00000000	00000	—	———	0	—	———	0

High-Temperature Silicone Rubber
0 Holes

				1/32" to 3/64"	5/8"	—	570	Off-White	50	0000000	00000	—	———	0	—	———	0
				1/32" to 3/32"	1"	—	570	Red	50	00000000	0000	—	———	0	—	———	0
				1/32" to 1/8"	5/8"	—	570	Clear	50	0000000	0000	—	———	0	—	———	0
				3/64" to 1/16"	3/4"	—	570	Off-White	50	00000000	00000	—	———	0	—	———	0
				3/64" to 7/64"	5/8"	—	570	Clear	50	0000000	0000	—	———	0	—	———	0
				3/64" to 13/64"	1 1/8"	—	570	Clear	50	0000000	00000	—	———	0	—	———	0
				1/16" to 11/64"	3/4"	—	570	Red	50	00000000	00000	—	———	0	—	———	0
				1/16" to 13/64"	3/4"	—	570	Clear	50	0000000	00000	—	———	0	—	———	0
				5/64" to 7/64"	5/8"	—	570	Green	50	0000000	0000	—	———	0	—	———	0
				5/64" to 11/64"	5/8"	—	570	Pink	50	0000000	00000	—	———	0	—	———	0
				1/8" to 1/2"	2"	—	570	Red	10	00000000	0000	—	———	0	—	———	0
				9/64" to 15/64"	3/4"	—	570	Black	50	0000000	00000	—	———	0	—	———	0
				9/64" to 23/64"	1 1/4"	—	570	Red	25	0000000	00000	—	———	0	—	———	0
				13/64" to 21/64"	5/8"	—	570	Red	50	0000000	00000	—	———	0	—	———	0
				1/4" to 7/16"	1"	—	570	Red	50	00000000	00000	—	———	0	—	———	0
				17/64" to 23/64"	3/4"	—	570	Yellow	25	0000000	0000	—	———	0	—	———	0
				17/64" to 27/64"	1"	—	570	Clear	25	0000000	00000	—	———	0	—	———	0
				9/32" to 23/64"	3/4"	—	570	Off-White	50	00000000	00000	—	———	0	—	———	0
				21/64" to 31/64"	13/16"	—	570	Clear	10	0000000	0000	—	———	0	—	———	0
				11/32" to 15/32"	3/4"	—	570	Clear	10	0000000	00000	—	———	0	—	———	0
				11/32" to 1/2"	13/16"	—	570	Clear	10	0000000	00000	—	———	0	—	———	0
				23/64" to 29/64"	13/16"	—	570	Clear	25	0000000	00000	—	———	0	—	———	0
				13/32" to 19/32"	1"	—	570	Red	25	00000000	00000	—	———	0	—	———	0
				27/64" to 37/64"	1"	—	570	Clear	25	0000000	00000	—	———	0	—	———	0
				29/64" to 39/64"	13/16"	—	570	Green	10	0000000	0000	—	———	0	—	———	0
				29/64" to 43/64"	1"	—	570	Clear	10	0000000	00000	—	———	0	—	———	0
				1/2" to 21/32"	1"	—	570	Pink	10	0000000	00000	—	———	0	—	———	0
				33/64" to 41/64"	1"	—	570	Red	25	0000000	00000	—	———	0	—	———	0
				37/64" to 47/64"	1"	—	570	Black	10	0000000	00000	—	———	0	—	———	0
				39/64" to 23/32"	1"	—	570	Off-White	10	00000000	00000	—	———	0	—	———	0
				41/64" to 49/64"	1"	—	570	Clear	10	0000000	00000	—	———	0	—	———	0
		41/64" to 51/64"		1"	—	570	Red	10	0000000	00000	—	———	0	—	———	0
		47/64" to 59/64"	1"	—	570	Yellow	10	0000000	00000	—	———	0	—	———	0
		3/4" to 1"	1"	—	570	Clear	5	0000000	00000	—	———	0	—	———	0
		49/64" to 29/32"	1"	—	570	Off-White	5	00000000	00000	—	———	0	—	———	0
		51/64" to 1"	1"	—	570	Clear	5	0000000	00000	—	———	0	—	———	0
		53/64" to 31/32"	1"	—	570	Off-White	5	0000000	00000	—	———	0	—	———	0
		29/32" to 1 1/16"	1"	—	570	Red	10	00000000	00000	—	———	0	—	———	0
		59/64" to 1 3/64"	1"	—	570	Clear	5	0000000	00000	—	———	0	—	———	0
		61/64" to 1 5/64"	1"	—	570	Clear	5	00000000	00000	—	———	0	—	———	0
		1 3/64" to 1 1/4"	1"	—	570	Green	5	0000000	00000	—	———	0	—	———	0
		1 1/16" to 1 21/64"	1"	—	570	Red	5	00000000	00000	—	———	0	—	———	0
		1 5/64" to 1 7/32"	1"	—	570	Off-White	5	0000000	00000	—	———	0	—	———	0
		1 3/16" to 1 7/16"	1"	—	570	Blue	2	0000000	0000	—	———	0	—	———	0
		1 19/64" to 1 1/2"	1"	—	570	Off-White	2	0000000	00000	—	———	0	—	———	0
		1 5/16" to 1 5/8"	1"	—	570	Clear	1	0000000	0000	—	———	0	—	———	0
		1 21/64" to 1 19/32"	1"	—	570	Clear	1	0000000	0000	—	———	0	—	———	0
		1 15/32" to 1 3/4"	1"	—	570	Red	1	0000000	0000	—	———	0	—	———	0
		1 31/64" to 1 3/4"	1"	—	570	Red	1	0000000	0000	—	———	0	—	———	0
		1 41/64" to 1 61/64"	1"	—	570	Clear	1	0000000	0000	—	———	0	—	———	0
		1 21/32" to 1 15/16"	1"	—	570	Clear	1	0000000	00000	—	———	0	—	———	0
		1 13/16" to 2 1/64"	1"	—	570	Off-White	2	0000000	00000	—	———	0	—	———	0
		1 57/64" to 2 3/16"	1"	—	570	Purple	1	0000000	0000	—	———	0	—	———	0
		1 31/32" to 2 15/32"	1"	—	570	Clear	1	0000000	0000	—	———	0	—	———	0
		1 63/64" to 2 15/32"	1"	—	570	Red	1	0000000	0000	—	———	0	—	———	0
		2 9/64" to 2 1/2"	1"	—	570	Red	1	0000000	00000	—	———	0	—	———	0
		2 5/16" to 2 21/32"	1"	—	570	Clear	1	00000000	00000	—	———	0	—	———	0
		2 29/64" to 2 15/16"	1 3/8"	—	570	Red	1	0000000	00000	—	———	0	—	———	0
		3 1/64" to 3 17/32"	1 1/2"	—	570	Red	1	0000000	00000	—	———	0	—	———	0
		3 17/64" to 4 1/32"	1 1/2"	—	570	Red	1	0000000	00000	—	———	0	—	———	0
		3 33/64" to 4 63/64"	2"	—	570	Red	1	0000000	00000	—	———	0	—	———	0

Cork
0 Holes

		7/64" to 5/32"	1/2"	0000	150	Brown	100	0000000	00000	—	———	0	—	———	0
		11/64" to 15/64"	1/2"	000	150	Brown	100	0000000	00000	—	———	0	—	———	0
		1/4" to 9/32"	1/2"	00	150	Brown	100	0000000	00000	—	———	0	—	———	0
		19/64" to 21/64"	1/2"	0	150	Brown	100	0000000	00000	—	———	0	—	———	0
		11/32" to 13/32"	5/8"	1	150	Brown	100	0000000	00000	—	———	0	—	———	0
		27/64" to 29/64"	11/16"	2	150	Brown	100	0000000	00000	—	———	0	—	———	0
		15/32" to 17/32"	3/4"	3	150	Brown	100	0000000	00000	—	———	0	—	———	0
		1/2" to 37/64"	13/16"	4	150	Brown	100	0000000	00000	—	———	0	—	———	0
		9/16" to 21/32"	7/8"	5	150	Brown	100	0000000	00000	—	———	0	—	———	0
		5/8" to 45/64"	15/16"	6	150	Brown	100	000000	00000	—	———	0	—	———	0
		43/64" to 25/32"	1"	7	150	Brown	100	0000000	00000	—	———	0	—	———	0
		23/32" to 53/64"	1 1/16"	8	150	Brown	50	0000000	00000	—	———	0	—	———	0
		49/64" to 29/32"	1 1/8"	9	150	Brown	50	0000000	00000	—	———	0	—	———	0
		51/64" to 59/64"	1 1/4"	10	150	Brown	25	0000000	0000	—	———	0	—	———	0
		7/8" to 1"	1 1/4"	11	150	Brown	25	0000000	00000	—	———	0	—	———	0
		59/64" to 1 3/64"	1 1/4"	12	150	Brown	25	0000000	00000	—	———	0	—	———	0
		1" to 1 1/8"	1 1/4"	13	150	Brown	25	0000000	00000	—	———	0	—	———	0
		1 3/64" to 1 11/64"	1 1/4"	14	150	Brown	25	0000000	00000	—	———	0	—	———	0
		1 11/64" to 1 19/64"	1 1/2"	16	150	Brown	25	0000000	00000	—	———	0	—	———	0
		1 7/32" to 1 3/8"	1 1/2"	17	150	Brown	25	00000000	00000	—	———	0	—	———	0
		1 19/64" to 1 27/64"	1 1/2"	18	150	Brown	10	0000000	0000	—	———	0	—	———	0
		1 11/32" to 1 1/2"	1 1/2"	19	150	Brown	10	00000000	0000	—	———	0	—	———	0
		1 27/64" to 1 35/64"	1 1/2"	20	150	Brown	10	0000000	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	00000000	000000
	35/64" to 41/64"	1"	0	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	39/64" to 23/32"	1"	1	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	43/64" to 23/32"	1"	2	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	49/64" to 29/32"	1"	3	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	51/64" to 31/32"	1"	4	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	59/64" to 1"	1"	5	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	1 5/64" to 1 7/32"	1"	6	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	1 9/64" to 1 13/32"	1"	7	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	1 21/64" to 1 9/16"	1"	8	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	1 17/32" to 1 45/64"	1"	9	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
	1 23/32" to 1 59/64"	1"	10	400	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000