Tapered Silicone Plugs | McMaster-Carr

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133 Products

Tapered Plugs

High-Temperature

Silicone Rubber,

0 Holes

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.

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

					0 Holes
	For ID	Ht.	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.
High-Temperature Silicone Rubber



		1/32" to 3/64"	5/8"	570	Off-White	50	9277K84	000000


		1/32" to 3/32"	1"	570	Red	50	9277K201	0000
		1/32" to 1/8"	5/8"	570	Clear	50	9277K18	0000
		3/64" to 1/16"	3/4"	570	Off-White	50	9277K851	00000
		3/64" to 7/64"	5/8"	570	Clear	50	9277K41	00000
		3/64" to 13/64"	1 1/8"	570	Clear	50	9277K21	00000
		1/16" to 11/64"	3/4"	570	Red	50	9277K202	00000
		1/16" to 13/64"	3/4"	570	Clear	50	9277K23	00000
		5/64" to 7/64"	5/8"	570	Green	50	9277K35	0000
		5/64" to 11/64"	5/8"	570	Pink	50	9277K36	00000
		1/8" to 1/2"	2"	570	Red	10	9277K204	00000


		9/64" to 15/64"	3/4"	570	Black	50	9277K37	00000
		9/64" to 23/64"	1 1/4"	570	Red	25	9277K81	00000
		13/64" to 21/64"	5/8"	570	Red	50	9277K38	00000
		1/4" to 7/16"	1"	570	Red	50	9277K203	00000
		17/64" to 23/64"	3/4"	570	Yellow	25	9277K39	0000
		17/64" to 27/64"	1"	570	Clear	25	9277K87	00000
		9/32" to 23/64"	3/4"	570	Clear	50	9277K101	00000
		21/64" to 31/64"	13/16"	570	Clear	10	9277K52	0000
		11/32" to 15/32"	3/4"	570	Clear	10	9277K28	00000
		11/32" to 1/2"	13/16"	570	Clear	10	9277K26	00000


		23/64" to 29/64"	13/16"	570	Clear	25	9277K88	00000
		13/32" to 19/32"	1"	570	Red	25	9277K205	00000
		27/64" to 37/64"	1"	570	Clear	25	9277K89	00000
		29/64" to 39/64"	13/16"	570	Green	10	9277K53	0000
		29/64" to 43/64"	1"	570	Clear	10	9277K91	00000
		1/2" to 21/32"	1"	570	Pink	10	9277K33	00000
		33/64" to 41/64"	1"	570	Red	25	9277K82	00000
		37/64" to 47/64"	1"	570	Black	10	9277K54	00000
		39/64" to 23/32"	1"	570	Off-White	10	9277K102	00000
		41/64" to 49/64"	1"	570	Clear	10	9277K92	00000


		41/64" to 51/64"	1"	570	Red	10	9277K83	00000
		47/64" to 59/64"	1"	570	Yellow	10	9277K55	00000
		3/4" to 1"	1"	570	Clear	5	9277K58	00000
		49/64" to 29/32"	1"	570	Off-White	5	9277K103	00000
		51/64" to 1"	1"	570	Clear	5	9277K76	00000
		53/64" to 31/32"	1"	570	Off-White	5	9277K93	00000
		29/32" to 1 1/16"	1"	570	Red	10	9277K206	00000
		59/64" to 1 3/64"	1"	570	Clear	5	9277K94	00000
		61/64" to 1 5/64"	1"	570	Off-White	5	9277K104	00000
		1 3/64" to 1 1/4"	1"	570	Green	5	9277K77	00000


		1 1/16" to 1 21/64"	1"	570	Red	5	9277K207	00000
		1 5/64" to 1 7/32"	1"	570	Off-White	5	9277K95	00000
		1 3/16" to 1 7/16"	1"	570	Blue	2	9277K61	0000
		1 19/64" to 1 1/2"	1"	570	Off-White	2	9277K96	00000
		1 5/16" to 1 5/8"	1"	570	Clear	1	9277K63	0000
		1 21/64" to 1 19/32"	1"	570	Clear	1	9277K49	0000
		1 15/32" to 1 3/4"	1"	570	Red	1	9277K64	0000
		1 31/64" to 1 3/4"	1"	570	Red	1	9277K31	0000
		1 41/64" to 1 61/64"	1"	570	Clear	1	9277K62	0000
		1 21/32" to 1 15/16"	1"	570	Clear	1	9277K97	0000

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

Hollow Tapered Plugs

A hollow construction makes these plugs extra flexible, so they compress for easy installation and a snug fit. The tapered profile fits a range of hole diameters. If you flip the plug over, it can be used as a cap.

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

	For Pipe Size	Ht.	Max. Temp., ° F	Color	Flange Dia.	Pkg. Qty.		Pkg.
High-Temperature Silicone Rubber



	0.116" to 0.182"	1/8	3/8"	450	Red	11/32"	10	4491K39	00000


	0.24" to 0.295"	1/4	3/8"	450	Red	15/32"	10	4491K45	0000
	0.325" to 0.367"	1/4	3/16"	450	Red	1/2"	10	7770N13	0000
	0.361" to 0.418"	3/8	3/8"	450	Red	19/32"	10	4491K46	0000
	0.471" to 0.536"	1/2	7/16"	450	Red	23/32"	10	4491K48	0000
	0.58" to 0.667"	1/2	1/2"	450	Red	27/32"	10	7770N16	0000
	0.64" to 0.727"	1/2	1/2"	450	Red	29/32"	10	7770N17	0000
	0.69" to 0.788"	3/4	9/16"	450	Red	31/32"	10	4491K49	0000
	0.802" to 0.911"	3/4	5/8"	450	Red	1 3/32"	10	7770N19	0000
	0.866" to 0.975"	3/4	5/8"	450	Red	1 5/32"	10	7770N21	0000
	0.964" to 1.09"	1	3/4"	450	Red	1 9/32"	10	4491K5	00000


	1.094" to 1.215"	1	3/4"	450	Red	1 7/16"	10	7770N22	00000
	1.224" to 1.355"	1 1/4	3/4"	450	Red	1 17/32"	10	7770N23	00000
	1.312" to 1.465"	1 1/4	7/8"	450	Red	1 21/32"	5	7770N24	0000
	1.447" to 1.6"	1 1/2	7/8"	450	Red	1 25/32"	5	7770N25	0000
	1.56" to 1.682"	1 1/2	3/4"	450	Red	1 29/32"	5	7770N26	00000
	1 3/4" to 1.88"	1 1/2	3/4"	450	Red	2 1/32"	5	7770N27	00000
	1.78" to 1.95"	1 1/2	1"	450	Red	2 5/32"	2	7770N28	0000
	1.9" to 2.076"	2	1"	450	Red	2 9/32"	2	7770N29	0000
	2.035" to 2.21"	2	1"	450	Red	2 3/8"	2	7770N31	0000
	2.255" to 2.43"	2	1"	450	Red	2 19/32"	2	7770N32	00000


	2.525" to 2.7"	2 1/2	1"	450	Red	2 27/32"	2	7770N33	0000
	2.765" to 2.94"	2 1/2	1"	450	Red	3 3/32"	2	7770N34	00000

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

Tight-Hold Tapered Plugs

Tighten the wing nut to expand the sides of these plugs until they seal. They’ll stay securely in place until you loosen the nut. Plugs fit a range of diameters to seal containers or keep coatings out of holes.

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

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



	41/64" to 25/32"	1"	2	450	Orange	Stainless Steel	5117T11	00000


	23/32" to 15/16"	1"	3	450	Clear	Stainless Steel	5117T12	0000
	51/64" to 1 1/64"	1"	4	450	Clear	Stainless Steel	5117T13	0000
	29/32" to 1 1/16"	1"	5	450	Clear	Stainless Steel	5117T14	0000
	61/64" to 1 3/32"	1"	5 1/2	450	Clear	Stainless Steel	5117T15	0000
	1 1/32" to 1 1/4"	1"	6	450	Clear	Stainless Steel	5117T16	0000
	1 5/64" to 1 21/64"	1"	6 1/2	450	Clear	Stainless Steel	5117T17	00000
	1 3/16" to 1 29/64"	1"	7	450	Orange	Stainless Steel	5117T18	00000
	1 15/64" to 1 17/32"	1"	7 1/2	450	Clear	Stainless Steel	5117T19	00000
	1 5/16" to 1 39/64"	1"	8	450	Clear	Stainless Steel	5117T21	00000
	1 27/64" to 1 11/16"	1"	8 1/2	450	Clear	Stainless Steel	5117T22	00000


	1 15/32" to 1 49/64"	1"	9	450	Clear	Stainless Steel	5117T23	00000
	1 1/2" to 1 51/64"	1"	9 1/2	450	Clear	Stainless Steel	5117T24	00000
	1 21/32" to 1 31/32"	1"	10	450	Orange	Stainless Steel	5117T25	00000
	1 25/32" to 2 5/64"	1"	10 1/2	450	Clear	Stainless Steel	5117T26	00000
	1 57/64" to 2 13/64"	1"	11	450	Clear	Stainless Steel	5117T27	00000
	1 63/64" to 2 15/32"	1"	11 1/2	450	Clear	Stainless Steel	5117T28	00000
	2 9/64" to 2 33/64"	1"	12	450	Clear	Stainless Steel	5117T29	00000
	2 19/64" to 2 21/32"	1"	13	450	Clear	Stainless Steel	5117T31	00000
	2 29/64" to 2 61/64"	1 3/8"	13 1/2	450	Clear	Stainless Steel	5117T32	00000
	2 61/64" to 3 17/32"	1 17/32"	14	450	Clear	Stainless Steel	5117T33	00000


	3 9/32" to 4 3/64"	1 17/32"	15	450	Clear	Stainless Steel	5117T34	000000
	3 35/64" to 5"	1 31/32"	16	450	Clear	Stainless Steel	5117T35	000000

Vented Plugs for Pipe and Tubing

Image of Product. Front orientation. Contains Annotated. Protective Plugs. For Pipe, For Round Holes, Vented, For Round Shapes, Push In.

Keep coatings out of female threaded pipe and release pressure while they cure. Push in these plugs and a rib holds them in place. Tear away the tab to vent.

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

	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.
External Square Drive







	High-Temperature Silicone Rubber

	1/2	NPT	19/32"	600	Pink	10	5481K61	000000


	3/4	NPT	19/32"	600	Yellow	10	5481K62	00000
	1	NPT	11/16"	600	Clear	1	5481K63	0000
	1 1/4	NPT	3/4"	600	Green	1	5481K64	0000
	1 1/2	NPT	23/32"	600	White	1	5481K65	0000
	2	NPT	23/32"	600	Blue	1	5481K66	0000

Tapered Caps

Don't worry about having the exact size you need on hand. These caps are shaped to fit a range of ODs—just keep pushing on until they're snug. Because they make less contact with the parts they cover, they’re easier to remove than straight caps. In a pinch, you can flip tapered caps over and use them as plugs.

High-Temperature Silicone Rubber—Withstand multiple passes when paint baking, powder coating, and electroplating. Caps are flexible to conform to parts.

	For Pipe Size	Inside Ht.	Flexibility	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.
High-Temperature Silicone Rubber



	0.111" to 0.177"	1/8	0.38"	Flexible	450	Red	10	4491K31	00000


	0.235" to 0.302"	1/4	0.38"	Flexible	450	Red	10	4491K32	0000
	0.356" to 0.422"	3/8	0.38"	Flexible	450	Red	10	4491K33	0000
	0.468" to 0.545"	1/2	0.44"	Flexible	450	Red	10	4491K36	0000
	0.687" to 0.785"	3/4	0.56"	Flexible	450	Red	10	4491K37	0000
	0.901" to 1.027"	1	3/4"	Flexible	450	Red	10	4491K38	00000

Miniature Pull-Through Plugs

Often used with electronic components such as circuit boards and connectors, these tiny plugs stretch the entire length of through holes. Grip the end of the plug and pull through to protect holes during finishing. Also known as mousetails.

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

	Ht.	Tab Ht.	Max. Temp., ° F	Color	Pkg. Qty.		Pkg.
High-Temperature Silicone Rubber



	0.022" to 0.079"	1 5/16"	21/32"	600	Clear	10	3066N13	00000


	0.025" to 0.08"	2"	1/2"	600	Clear	10	3066N11	0000