Butyl Rubber | McMaster-Carr

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Vibration-Damping Sheets and Tape

Material

Viton® Fluoroelastomer

Formulation

Butyl

Butyl Mastic

System of Measurement

Thickness

Backing Type

Width

Shape

Length

Flexibility

For Joining

Color

Texture

Hardness

Performance

Highly Abrasion Resistant

Highly Tear Resistant

Ultra Ozone Resistant

Ultra Water Resistant

Ultra Weather Resistant

Maximum Temperature

For Use On

RoHS

Container Type

Environment

Hardness Rating

For Use Outdoors

DFARS Specialty Metals

Exempt

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

Yes

Export Control Classification Number (ECCN)

REACH

Minimum Temperature

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48 Products

Rubber Selector Packs

Material Selector Pack

Compare the look and feel of nine different types of rubber.

No. of Pieces	Material	Thickness	Width	Length		Each
9	Buna-N, Butyl, CSM, EPDM, Natural Rubber, Neoprene, SBR, Silicone Rubber, Viton® Fluoroelastomer	1/8"	4"	4"	8450K111	000000

Vibration-Damping Sheets

Install these adhesive-back sheets to reduce noise from vibrating surfaces, such as duct and equipment housings.

Butyl—Butyl sheets have an aluminum surface layer that helps resist corrosion.

						Temp. Range, ° F
	Vibration Reduced	Thk.	Wd.	Material	Color	Min.	Max.	Flammability Rating	Lg., ft.		Each
Adhesive Backing



		91%	1/16"	12"	Butyl	Gray	-40	225	FMVSS No. 302	3 3/4	9709T29	000000

Airtight Weather-Resistant Butyl Sheets

Often used as inner tubes, butyl rubber won’t allow air, fumes, or gases to pass through. This butyl rubber, also known as isobutylene isoprene, resists sunlight, ozone, and water.

Smooth Texture

Industrial—Meet ASTM D2000, so you can trust this rubber to flex and compress consistently throughout its life.

	Tensile Strength, psi	Color	Temp., ° F	For Use Outdoors		Each
Industrial







	1/16" Thick

	12"	12"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K1	000000


	12"	24"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K18	00000




			1/8" Thick

			12"	12"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K2	00000


			12"	24"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K19	00000




					1/4" Thick

					12"	12"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K3	00000


					12"	24"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K21	00000

Made-to-Order with Smooth Texture

Industrial—Meet ASTM D2000, so you can trust this rubber to flex and compress consistently throughout its life.

	Tensile Strength, psi	Color	Temp., ° F	For Use Outdoors		Per Ft.
Industrial







	1/16" Thick

	36"	Made-to-Order	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K29	000000




			1/8" Thick

			36"	Made-to-Order	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K38	00000




					1/4" Thick

					36"	Made-to-Order	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K41	000000

Smooth Texture with Adhesive Backing

Industrial—Meet ASTM D2000, so you can trust this rubber to flex and compress consistently throughout its life.

							Adhesive
	Wd.	Lg.	Hardness	Tensile Strength, psi	Color	Temp., ° F	Material	Temp., ° F	For Use Outdoors		Each
Industrial







				1/16" Thick

				12"	12"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K11	000000


				12"	24"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K25	00000




						1/8" Thick

						12"	12"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K15	00000


						12"	24"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K27	00000




								1/4" Thick

								12"	12"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K17	00000


								12"	24"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K28	00000

Made-to-Order with Smooth Texture and Adhesive Backing

Industrial—Meet ASTM D2000, so you can trust this rubber to flex and compress consistently throughout its life.

							Adhesive
	Wd.	Lg.	Hardness	Tensile Strength, psi	Color	Temp., ° F	Material	Temp., ° F	For Use Outdoors		Per Ft.
Industrial







				1/16" Thick

				36"	Made-to-Order	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K42	000000




						1/8" Thick

						36"	Made-to-Order	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K43	00000




								1/4" Thick

								36"	Made-to-Order	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K44	000000

Self-Fusing Rubber Sealing Tape

Image of Product. Front orientation. Repair and Duct Tape. Self-Fusing, Sealing.

Bonds to itself for a permanent, watertight seal. This tape has no adhesive, so it won't dry out and crack, which can cause standard tape to fail over time. The rubber backing molds to irregular surfaces and withstands demanding conditions, making this tape a good choice for patching and sealing anything from roofs to pipes.

Butyl Rubber—Creates an airtight, impermeable seal. It also stretches and conforms better than EPDM rubber tape.

	Lg., ft.	Overall Thk.	Temp. Range, ° F	Tensile Strength	Color		Each
Butyl Rubber



	3/8"	25	0.125"	-40 to 200	15 lbf/in. wd.	Black	76385A34	000000


	1/2"	25	0.125"	-40 to 200	15 lbf/in. wd.	Gray	76385A35	00000
	1"	50	0.125"	-20 to 180	10 lbf/in. wd.	Black	76385A14	00000
	1 1/2"	50	0.125"	-20 to 180	10 lbf/in. wd.	Black	76385A15	00000
	2 1/2"	25	0.125"	-40 to 200	15 lbf/in. wd.	Gray	76385A19	00000
	3"	25	0.051"	-40 to 180	Not Rated	Black	76385A85	00000
	4"	25	0.125"	-20 to 180	10 lbf/in. wd.	Black	76385A22	00000
	8"	25	0.125"	-20 to 180	10 lbf/in. wd.	Black	76385A17	000000

Airtight Weather-Resistant Butyl Strips

Often used as inner tubes, butyl rubber won’t allow air, fumes, or gases to pass through. This butyl rubber, also known as isobutylene isoprene, resists sunlight, ozone, and water.

Smooth Texture

Industrial—Meet ASTM D2000, so you can trust this rubber to flex and compress consistently throughout its life.

	Tensile Strength, psi	Color	Temp., ° F	For Use Outdoors		Each
Industrial







	1/16" Thick

	2"	36"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K45	00000




			1/8" Thick

			2"	36"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K46	00000




					1/4" Thick

					2"	36"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Yes	8609K47	00000

Smooth Texture with Adhesive Backing

Industrial—Meet ASTM D2000, so you can trust this rubber to flex and compress consistently throughout its life.

							Adhesive
	Wd.	Lg.	Hardness	Tensile Strength, psi	Color	Temp., ° F	Material	Temp., ° F	For Use Outdoors		Each
Industrial







				1/16" Thick

				2"	36"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K48	000000




						1/8" Thick

						2"	36"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K49	00000




								1/4" Thick

								2"	36"	Durometer 60A (Medium Hard)	1,500	Black	-40 to 225	Acrylic Plastic	-30 to 180	Yes	8609K52	00000

Non-Hardening Caulk

Also known as thumb-grade caulk, this forms a non-hardening, moisture-resistant seal that remains pliable.

3M Butyl Strip

Image of Product. Front orientation. Butyl. Non-Hardening Caulk, 3M.

Butyl has a sticky, gummy consistency.

									Black
Mfr. Model No.	Wd.	Thk.	Lg., ft.	Tensile Strength	Hardness Rating	Temp. Range, ° F	For Joining	No. of Pieces		Each
08578	5/16"	5/16"	1	Not Rated	Not Rated	-20 to 200	Asphalt Composite Glass Masonry Metal Plastic Wood	60	9408T21	000000
5354	1/4"	1/8"	50	Not Rated	Medium Hard (Durometer 60A)	-50 to 190	Glass Metal Plastic Wood Metal to Glass Metal to Plastic Plastic to Glass Wood to Glass	1	9408T24	00000
5354	1/4"	1/4"	25	Not Rated	Medium Hard (Durometer 60A)	-50 to 190	Glass Metal Plastic Wood Metal to Glass Metal to Plastic Plastic to Glass Wood to Glass	1	9408T143	00000
5354	3/8"	1/8"	50	Not Rated	Medium Hard (Durometer 60A)	-50 to 190	Glass Metal Plastic Wood Metal to Glass Metal to Plastic Plastic to Glass Wood to Glass	1	9408T22	00000
5354	3/4"	1/8"	50	Not Rated	Medium Hard (Durometer 60A)	-50 to 190	Glass Metal Plastic Wood Metal to Glass Metal to Plastic Plastic to Glass Wood to Glass	1	9408T25	000000

Butyl Strip

Image of Product. Front orientation. Butyl. Non-Hardening Caulk.

Butyl has a sticky, gummy consistency.

							White
Dia.	Lg., ft.	Tensile Strength	Hardness Rating	Temp. Range, ° F	For Joining	No. of Pieces		Each
3/8"	25	Not Rated	Soft (Durometer 20A)	-20 to 350	Glass Masonry Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass Wood to Glass	3	9408T15	000000

Butyl Mastic Strip

Image of Product. Front orientation. Butyl Mastic. Non-Hardening Caulk.

Butyl mastic has a clay-like consistency.

							Brown		Gray
Dia.	Lg., ft.	Tensile Strength	Hardness Rating	Temp. Range, ° F	For Joining	No. of Pieces		Each		Each
1/8"	30	Not Rated	Not Rated	-30 to 150	Glass Masonry Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	8	———	0	9408T146	00000
1/8"	45	Not Rated	Not Rated	-30 to 150	Glass Masonry Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	8	9408T144	00000	9408T17	0000
1/8"	90	Not Rated	Not Rated	-30 to 150	Glass Masonry Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	8	9408T145	0000	9408T14	0000

Glass Sealing Rope

Press this pliable rope into place to hold glass in window frames and seal leaks. It’s also known as glazing compound. The rope is non-sagging, so it won't drip from vertical and overhead surfaces. It’s good for use between dissimilar materials and in environments with wide temperature fluctuation. Remove the peel-off liner to install.

									Temp., ° F
	Container Type	Dia.	Lg., ft.	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength, psi	Hardness Rating	Application Temp. Range, ° F	Min.	Max.	For Joining	Color (Clarity)		Each
Butyl



		Strip	1/4"	20	Not Rated	Not Rated	16	Soft (Durometer 15A)	-5 to 120	-40	180	Glass Metal Wood Metal to Glass Wood to Glass	Gray (Opaque)	1049A32	000000

Self-Leveling Roof Joint Sealants

Keep out the elements by sealing roof joints. Thinner than non-sagging sealants, these flow easily into cracks and have a smooth finish. They're good for use in environments with wide temperature fluctuation.

	Container									Temp., ° F
	Size, fl. oz.	Type	Begins to Harden, hr.	Reaches Full Strength, day	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength	Hardness Rating	Application Temp. Range, ° F	Min.	Max.	For Joining	Color (Clarity)		Each
Butyl



		10	Cartridge	2	10	Not Rated	Not Rated	Not Rated	Not Rated	40 to 90	-20	180	Composite Masonry Metal Plastic Rubber Wood	White (Opaque)	1604N101	000000

Strong-Grip Pipe Insulation Tapes

Seal joints and gaps in your line in seconds. This tape wraps around irregular shapes, tight bends, small-diameter pipes, and other hard-to-reach areas where you need a quick fix.

Butyl—Flexible enough to wrap around pipe without tearing or cracking.

								Adhesive Backing
	Thk.	Wd.	Lg., ft.	Temp. Range, ° F	Insulation R Value	Thermal Conductivity @ Temp.	Flexibility		Each
Butyl



		1/8"	2"	30	-30 to 175	2	0.14 BTU⋅in/(hr⋅ft²⋅°F) @ 75° F	Flexible	4476K2	000000