Bottle Stoppers | McMaster-Carr

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169 Products

Tapered Plugs

Without Holes

With 1 Hole

With 2 Holes

Often used as laboratory stoppers, these rubber plugs have good abrasion resistance. They’re tapered to fit a range of hole diameters.

Plugs with holes allow you to insert tubes.

For technical drawings and 3-D models, click on a part number.

SBR Rubber
Tapered Plug Trade Size	For ID	Ht.	Max. Temp., °F	Hardness	Color	Pkg. Qty.		Without Holes	With 1 Hole	With 2 Holes
A	7/64"-9/64"	23/32"	200°	Durometer 40A	Black	10	0000000	00000	00	00
B	5/32"-13/64"	31/32"	200°	Durometer 40A	Black	10	0000000	0000	00	00
C	7/32"-19/64"	31/32"	200°	Durometer 40A	Black	10	0000000	0000	00	00
D	9/32"-25/64"	31/32"	200°	Durometer 40A	Black	10	00000000	00000	000000	00
000	3/8"-27/64"	23/32"	200°	Durometer 40A	Black	50	00000000	0000	0000	00000
00	7/16"-35/64"	31/32"	200°	Durometer 40A	Black	50	00000000	00000	00000	00000
0	17/32"-39/64"	31/32"	200°	Durometer 40A	Black	40	00000000	00000	00000	00000
1	19/32"-45/64"	31/32"	200°	Durometer 40A	Black	30	00000000	00000	00000	00000
2	43/64"-47/64"	31/32"	200°	Durometer 40A	Black	25	00000000	00000	00000	00000
3	49/64"-57/64"	31/32"	200°	Durometer 40A	Black	25	00000000	00000	00000	00000
4	53/64"-63/64"	31/32"	200°	Durometer 40A	Black	10	00000000	0000	0000	0000
5	61/64"-1 1/64"	31/32"	200°	Durometer 40A	Black	10	00000000	00000	00000	00000
5 1/2	63/64"-1 3/64"	31/32"	200°	Durometer 40A	Black	10	00000000	0000	0000	00000
6	1 5/64"-1 13/64"	31/32"	200°	Durometer 40A	Black	10	00000000	00000	00000	00000
6 1/2	1 7/64"-1 19/64"	31/32"	200°	Durometer 40A	Black	10	00000000	00000	00000	00000
7	1 15/64"-1 27/64"	31/32"	200°	Durometer 40A	Black	5	00000000	0000	0000	0000
7 1/2	1 17/64"-1 31/64"	31/32"	200°	Durometer 40A	Black	5	00000000	0000	0000	0000
8	1 23/64"-1 9/16"	31/32"	200°	Durometer 40A	Black	5	00000000	00000	00000	00000
8 1/2	1 29/64"-1 5/8"	31/32"	200°	Durometer 40A	Black	5	00000000	00000	00000	00000
9	1 33/64"-1 23/32"	31/32"	200°	Durometer 40A	Black	5	00000000	00000	00000	00000
9 1/2	1 35/64"-1 3/4"	31/32"	200°	Durometer 40A	Black	5	00000000	00000	00000	00000
10	1 45/64"-1 29/32"	31/32"	200°	Durometer 40A	Black	5	00000000	00000	00000	00000
10 1/2	1 53/64"-2 1/32"	31/32"	200°	Durometer 40A	Black	5	00000000	00000	00000	00000
11	1 59/64"-2 5/32"	31/32"	200°	Durometer 40A	Black	5	00000000	00000	00000	00000
11 1/2	2 1/64"-2 13/32"	31/32"	200°	Durometer 40A	Black	1	00000000	0000	0000	0000
12	2 11/64"-2 15/32"	31/32"	200°	Durometer 40A	Black	1	00000000	0000	0000	0000
13	2 21/64"-2 5/8"	31/32"	200°	Durometer 40A	Black	1	00000000	0000	0000	0000
13 1/2	2 31/64"-2 7/8"	1 3/8"	200°	Durometer 40A	Black	1	00000000	0000	0000	0000
14	3"-3 15/32"	1 17/32"	200°	Durometer 40A	Black	1	00000000	00000	00000	00000
15	3 11/32"-3 15/16"	1 17/32"	200°	Durometer 40A	Black	1	00000000	00000	00000	00000
16	3 19/32"-4 7/8"	1 31/32"	200°	Durometer 40A	Black	1	00000000	00000	00000	00000

Corks

Lightweight and moisture resistant, these plugs are laboratory-grade 100% natural cork. They’re tapered to fit a range of hole diameters.

For technical drawings and 3-D models, click on a part number.

		OD
Cork Trade Size	For ID	At Small End	At Large End	Ht.	Max. Temp., °F	Hardness	Color	Pkg. Qty.		Pkg.
0000	7/64"-5/32"	3/32"	3/16"	1/2"	150°	Durometer 60A	Brown	100	0000000	000000
000	11/64"-15/64"	5/32"	1/4"	1/2"	150°	Durometer 60A	Brown	100	0000000	00000
00	1/4"-9/32"	7/32"	5/16"	1/2"	150°	Durometer 60A	Brown	100	0000000	00000
0	19/64"-21/64"	9/32"	3/8"	1/2"	150°	Durometer 60A	Brown	100	0000000	00000
1	11/32"-13/32"	21/64"	7/16"	5/8"	150°	Durometer 60A	Brown	100	0000000	00000
2	27/64"-29/64"	3/8"	1/2"	11/16"	150°	Durometer 60A	Brown	100	0000000	00000
3	15/32"-17/32"	27/64"	9/16"	3/4"	150°	Durometer 60A	Brown	100	0000000	00000
4	1/2"-37/64"	15/32"	5/8"	13/16"	150°	Durometer 60A	Brown	100	0000000	00000
5	9/16"-21/32"	17/32"	11/16"	7/8"	150°	Durometer 60A	Brown	100	0000000	00000
6	5/8"-45/64"	37/64"	3/4"	15/16"	150°	Durometer 60A	Brown	100	000000	00000
7	43/64"-25/32"	5/8"	13/16"	1"	150°	Durometer 60A	Brown	100	0000000	00000
8	23/32"-53/64"	43/64"	7/8"	1 1/16"	150°	Durometer 60A	Brown	50	0000000	00000
9	49/64"-29/32"	47/64"	15/16"	1 1/8"	150°	Durometer 60A	Brown	50	0000000	00000
10	51/64"-59/64"	49/64"	1"	1 1/4"	150°	Durometer 60A	Brown	25	0000000	0000
11	7/8"-1"	53/64"	1 1/16"	1 1/4"	150°	Durometer 60A	Brown	25	0000000	00000
12	59/64"-1 3/64"	57/64"	1 1/8"	1 1/4"	150°	Durometer 60A	Brown	25	0000000	00000
13	1"-1 1/8"	61/64"	1 3/16"	1 1/4"	150°	Durometer 60A	Brown	25	0000000	00000
14	1 3/64"-1 11/64"	1 1/64"	1 1/4"	1 1/4"	150°	Durometer 60A	Brown	25	0000000	00000
16	1 11/64"-1 19/64"	1 3/32"	1 3/8"	1 1/2"	150°	Durometer 60A	Brown	25	0000000	00000
17	1 7/32"-1 3/8"	1 5/32"	1 7/16"	1 1/2"	150°	Durometer 60A	Brown	25	00000000	00000
18	1 19/64"-1 27/64"	1 7/32"	1 1/2"	1 1/2"	150°	Durometer 60A	Brown	10	0000000	0000
19	1 11/32"-1 1/2"	1 9/32"	1 9/16"	1 1/2"	150°	Durometer 60A	Brown	10	00000000	0000
20	1 27/64"-1 35/64"	1 11/32"	1 5/8"	1 1/2"	150°	Durometer 60A	Brown	10	0000000	0000
21	1 15/32"-1 5/8"	1 13/32"	1 11/16"	1 1/2"	150°	Durometer 60A	Brown	10	00000000	00000
22	1 35/64"-1 43/64"	1 15/32"	1 3/4"	1 1/2"	150°	Durometer 60A	Brown	10	0000000	00000
23	1 19/32"-1 3/4"	1 17/32"	1 13/16"	1 1/2"	150°	Durometer 60A	Brown	10	00000000	00000
24	1 43/64"-1 13/16"	1 19/32"	1 7/8"	1 1/2"	150°	Durometer 60A	Brown	10	0000000	00000
25	1 23/32"-1 7/8"	1 21/32"	1 15/16"	1 1/2"	150°	Durometer 60A	Brown	5	00000000	0000
26	1 51/64"-1 59/64"	1 23/32"	2"	1 1/2"	150°	Durometer 60A	Brown	5	0000000	00000
28	1 59/64"-2 3/64"	1 27/32"	2 1/8"	1 1/2"	150°	Durometer 60A	Brown	5	0000000	00000
30	2 3/64"-2 11/64"	1 31/32"	2 1/4"	1 1/2"	150°	Durometer 60A	Brown	1	0000000	0000
32	2 11/64"-2 19/64"	2 3/32"	2 3/8"	1 1/2"	150°	Durometer 60A	Brown	1	00000000	0000
36	2 27/64"-2 35/64"	2 11/32"	2 5/8"	1 1/2"	150°	Durometer 60A	Brown	1	00000000	0000
38	2 35/64"-2 43/64"	2 15/32"	2 3/4"	1 1/2"	150°	Durometer 60A	Brown	1	00000000	0000
40	2 43/64"-2 13/16"	2 19/32"	2 7/8"	1 1/2"	150°	Durometer 60A	Brown	1	00000000	0000
42	2 51/64"-2 59/64"	2 23/32"	3"	1 1/2"	150°	Durometer 60A	Brown	1	00000000	0000

High-Temperature Tapered Plugs

Good for electroplating, paint baking, and powder-coating applications, these plugs withstand temperatures up to 570° F for 20 minutes. All are tapered to fit a range of hole diameters.

For technical drawings and 3-D models, click on a part number.

Silicone Rubber
For ID	Ht.	Max. Temp., °F	Hardness	Color	Pkg. Qty.		Pkg.
1/32"-3/64"	5/8"	570°	Durometer 50A	Off-White	50	0000000	000000
1/32"-3/32"	1"	570°	Durometer 55A	Red	50	00000000	0000
1/32"-1/8"	5/8"	570°	Durometer 55A	Clear	50	0000000	0000
3/64"-1/16"	1"	570°	Durometer 50A	Off-White	50	0000000	00000
3/64"-7/64"	5/8"	570°	Durometer 55A	Clear	50	0000000	0000
3/64"-13/64"	1 1/8"	570°	Durometer 55A	Clear	50	0000000	00000
1/16"-5/64"	5/8"	570°	Durometer 50A	Off-White	50	0000000	00000
1/16"-11/64"	3/4"	570°	Durometer 55A	Red	50	00000000	00000
1/16"-13/64"	3/4"	570°	Durometer 55A	Clear	50	0000000	0000
5/64"-7/64"	5/8"	570°	Durometer 55A	Green	50	0000000	0000
5/64"-11/64"	5/8"	570°	Durometer 55A	Pink	50	0000000	00000
1/8"-1/2"	2"	570°	Durometer 55A	Red	10	00000000	0000
9/64"-15/64"	3/4"	570°	Durometer 55A	Black	50	0000000	00000
9/64"-23/64"	1 1/4"	570°	Durometer 55A	Red	25	0000000	00000
13/64"-21/64"	5/8"	570°	Durometer 55A	Red	50	0000000	00000
1/4"-7/16"	1"	570°	Durometer 55A	Red	50	00000000	00000
17/64"-23/64"	3/4"	570°	Durometer 55A	Yellow	25	0000000	0000
17/64"-27/64"	1"	570°	Durometer 50A	Clear	25	0000000	00000
9/32"-23/64"	3/4"	570°	Durometer 50A	Off-White	50	00000000	00000
21/64"-31/64"	13/16"	570°	Durometer 55A	Clear	10	0000000	0000
11/32"-15/32"	3/4"	570°	Durometer 55A	Clear	10	0000000	00000
11/32"-1/2"	13/16"	570°	Durometer 55A	Clear	10	0000000	00000
23/64"-29/64"	13/16"	570°	Durometer 55A	Clear	25	0000000	00000
13/32"-19/32"	1"	570°	Durometer 55A	Red	25	00000000	00000
27/64"-37/64"	1"	570°	Durometer 50A	Clear	25	0000000	00000
29/64"-39/64"	13/16"	570°	Durometer 55A	Green	10	0000000	0000
29/64"-43/64"	1"	570°	Durometer 50A	Clear	10	0000000	00000
1/2"-21/32"	1"	570°	Durometer 55A	Pink	10	0000000	00000
33/64"-41/64"	1"	570°	Durometer 55A	Red	25	0000000	00000
37/64"-47/64"	1"	570°	Durometer 55A	Black	10	0000000	00000
39/64"-23/32"	1"	570°	Durometer 50A	Off-White	10	00000000	00000
41/64"-49/64"	1"	570°	Durometer 50A	Clear	10	0000000	00000
41/64"-51/64"	1"	570°	Durometer 55A	Red	10	0000000	00000
47/64"-59/64"	1"	570°	Durometer 55A	Yellow	10	0000000	00000
3/4"-1"	1"	570°	Durometer 40A	Clear	5	0000000	00000
49/64"-29/32"	1"	570°	Durometer 50A	Off-White	5	00000000	00000
51/64"-1"	1"	570°	Durometer 55A	Clear	5	0000000	00000
53/64"-31/32"	1"	570°	Durometer 50A	Off-White	5	0000000	00000
29/32"-1 1/16"	1"	570°	Durometer 55A	Red	10	00000000	00000
59/64"-1 3/64"	1"	570°	Durometer 40A	Clear	5	0000000	00000
61/64"-1 5/64"	1"	570°	Durometer 55A	Clear	5	00000000	00000
1 3/64"-1 1/4"	1"	570°	Durometer 55A	Green	5	0000000	00000
1 1/16"-1 21/64"	1"	570°	Durometer 55A	Red	5	00000000	00000
1 5/64"-1 7/32"	1"	570°	Durometer 50A	Off-White	5	0000000	00000
1 3/16"-1 7/16"	1"	570°	Durometer 45A	Blue	2	0000000	0000
1 19/64"-1 1/2"	1"	570°	Durometer 50A	Off-White	2	0000000	00000
1 5/16"-1 5/8"	1"	570°	Durometer 35A	Clear	1	0000000	0000
1 21/64"-1 19/32"	1"	570°	Durometer 55A	Clear	1	0000000	0000
1 15/32"-1 3/4"	1"	570°	Durometer 40A	Red	1	0000000	0000
1 31/64"-1 3/4"	1"	570°	Durometer 55A	Red	1	0000000	0000
1 41/64"-1 61/64"	1"	570°	Durometer 55A	Clear	1	0000000	0000
1 21/32"-1 15/16"	1"	570°	Durometer 50A	Clear	1	0000000	00000
1 13/16"-2 1/64"	1"	570°	Durometer 50A	Off-White	2	0000000	00000
1 57/64"-2 3/16"	1"	570°	Durometer 55A	Purple	1	0000000	0000
1 31/32"-2 15/32"	1"	570°	Durometer 55A	Clear	1	0000000	00000
1 63/64"-2 15/32"	1"	570°	Durometer 55A	Red	1	0000000	0000
2 9/64"-2 1/2"	1"	570°	Durometer 55A	Red	1	0000000	00000
2 5/16"-2 21/32"	1"	570°	Durometer 50A	Clear	1	00000000	00000
2 29/64"-2 15/16"	1 3/8"	570°	Durometer 55A	Red	1	0000000	00000
3 1/64"-3 17/32"	1 1/2"	570°	Durometer 55A	Red	1	0000000	00000
3 17/64"-4 1/32"	1 1/2"	570°	Durometer 55A	Red	1	0000000	00000
3 33/64"-4 63/64"	2"	570°	Durometer 55A	Red	1	0000000	00000

Chemical-Resistant Tapered Plugs

These plugs have excellent chemical resistance for masking parts during chemical finishing applications such as plating and anodizing. Their tapered design fits a range of hole diameters.

For technical drawings and 3-D models, click on a part number.

EPDM Rubber
For ID	Ht.	Max. Temp., °F	Hardness	Color	Pkg. Qty.		Pkg.
3/64"-1/16"	5/8"	300°	Durometer 45A	Black	100	00000000	000000
1/16"-5/64"	5/8"	300°	Durometer 45A	Black	100	0000000	00000
5/64"-1/8"	3/4"	300°	Durometer 45A	Black	100	0000000	00000
9/64"-3/16"	3/4"	300°	Durometer 45A	Black	50	0000000	00000
13/64"-9/32"	5/8"	300°	Durometer 45A	Black	50	0000000	00000
17/64"-5/16"	3/4"	300°	Durometer 45A	Black	25	0000000	00000
17/64"-3/8"	1"	300°	Durometer 45A	Black	50	00000000	00000
21/64"-7/16"	7/8"	300°	Durometer 45A	Black	25	0000000	00000
33/64"-19/32"	1"	300°	Durometer 45A	Black	10	0000000	00000
37/64"-11/16"	1"	300°	Durometer 45A	Black	10	0000000	00000
41/64"-23/32"	1"	300°	Durometer 45A	Black	10	0000000	00000
47/64"-7/8"	1"	300°	Durometer 45A	Black	10	0000000	00000
51/64"-15/16"	1"	300°	Durometer 45A	Black	10	00000000	00000
1 1/16"-1 3/16"	1"	300°	Durometer 45A	Black	10	00000000	00000
1 7/32"-1 3/8"	1"	300°	Durometer 45A	Black	10	00000000	00000
1 21/64"-1 35/64"	1"	300°	Durometer 45A	Black	10	00000000	00000
1 1/2"-1 11/16"	1"	300°	Durometer 45A	Black	10	00000000	00000
1 29/32"-2 9/64"	1"	300°	Durometer 45A	Black	5	00000000	00000
2"-2 13/32"	1"	300°	Durometer 45A	Black	5	00000000	00000
2 5/32"-2 7/16"	1"	300°	Durometer 45A	Black	5	00000000	00000
2 15/32"-2 57/64"	1 1/2"	300°	Durometer 45A	Black	1	00000000	00000
3 3/64"-3 7/16"	1 1/2"	300°	Durometer 45A	Black	1	00000000	00000
3 19/64"-3 15/16"	1 1/2"	300°	Durometer 45A	Black	1	00000000	00000
3 35/64"-4 15/16"	2"	300°	Durometer 45A	Black	1	00000000	00000
4 3/64"-4 15/16"	2"	300°	Durometer 45A	Black	1	00000000	00000
4 19/64"-5 9/64"	2"	300°	Durometer 45A	Black	1	00000000	00000
4 51/64"-5 47/64"	2 1/4"	300°	Durometer 45A	Black	1	00000000	00000
5 3/64"-6 1/16"	2 1/2"	300°	Durometer 45A	Black	1	00000000	00000

Food Industry Tapered Plugs

Made of FDA listed materials, these plugs are suitable for food contact. They're also USP (United States Pharmacopeia) Class VI tested to certify there are no harmful reactions or long-term bodily effects caused by chemicals that leach out of materials. All of these plugs are tapered to fit a range of hole diameters.

For technical drawings and 3-D models, click on a part number.

Silicone Rubber
Tapered Plug Trade Size	For ID	Ht.	Max. Temp., °F	Hardness	Color	Specifications Met		Each
00	29/64"-37/64"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
0	35/64"-41/64"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	0000
1	39/64"-23/32"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	0000
2	43/64"-23/32"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
3	49/64"-29/32"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
4	51/64"-31/32"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
5	59/64"-1"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
6	1 5/64"-1 7/32"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
7	1 9/64"-1 13/32"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
8	1 21/64"-1 9/16"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
9	1 17/32"-1 45/64"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000
10	1 23/32"-1 59/64"	1"	400°	Durometer 45A	Semi-Clear White	FDA Compliant 21 CFR 177.2600, USP Class VI	00000000	00000