Butyl Sealants | McMaster-Carr

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25 Products

Caulking Tape

Press this adhesive-backed plastic tape into place for an immediate light-duty seal. It has a score line for easy installation in a corner.

									Temp., ° F
	Container Type	Wd.	Lg., ft.	Reaches Full Strength, hr.	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength	Hardness Rating	Min.	Max.	For Joining	Color (Clarity)		Each
PET with Butyl Adhesive







				1/4" Thick

				Strip	7/8"	11	12	Not Rated	Not Rated	Not Rated	Not Rated	55	80	Composite Glass Masonry Metal Plastic Rubber Wood	White (Opaque)	7582T25	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

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	00000

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-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, lbf/in. wd.	Color		Each
Butyl Rubber



	3/8"	25	0.125"	-40 to 200	15	Black	76385A34	000000


	1/2"	25	0.125"	-45 to 200	10	Black	76385A33	00000
	1"	50	0.125"	-20 to 180	10	Black	76385A14	00000
	1 1/2"	50	0.125"	-20 to 180	10	Black	76385A15	00000
	2 1/2"	25	0.125"	-20 to 180	10	Black	76385A16	00000
	3"	25	0.051"	-40 to 180	Not Rated	Black	76385A85	00000
	4"	25	0.125"	-20 to 180	10	Black	76385A22	00000
	8"	25	0.125"	-20 to 180	10	Black	76385A17	000000

Foam Sealing Gasket Tape

Stop water penetration with this tacky, flexible tape. It conforms to irregular shapes and expands to fill gaps. Use it on freezers, windows, and in marine applications.

Wd.	Dia.	Lg., ft.	Overall Thk.	Material	Facing Material	Adhesive Location	Temp. Range, ° F	Cell Type	Tensile Strength, psi	Adhesion to Steel	Color		Each
—	3/16"	66	0.2205"	PVC Foam	Butyl	Both Sides	-15 to 160	Closed	80	Not Rated	Black	75875A11	000000
—	1/4"	56	0.2835"	PVC Foam	Butyl	Both Sides	-15 to 160	Closed	80	Not Rated	Black	75875A12	00000
—	5/16"	44	0.3386"	PVC Foam	Butyl	Both Sides	-15 to 160	Closed	80	Not Rated	Black	75875A13	00000
—	3/8"	35	0.4331"	PVC Foam	Butyl	Both Sides	-15 to 160	Closed	80	Not Rated	Black	75875A14	00000
—	1/2"	27	0.5236"	PVC Foam	Butyl	Both Sides	-15 to 160	Closed	80	Not Rated	Black	75875A15	00000
3/8"	—	79	0.125"	PVC Foam	Butyl	Both Sides	-15 to 160	Open	80	Not Rated	Black	75875A661	00000
1/2"	—	53	0.1875"	PVC Foam	Butyl	Both Sides	-15 to 160	Open	80	Not Rated	Black	75875A663	00000
1/2"	—	79	0.125"	PVC Foam	Butyl	Both Sides	-15 to 160	Open	80	Not Rated	Black	75875A662	00000