Mastic Tape | McMaster-Carr

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Electrically Insulating

Moisture Resistant

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Scotch

Scotchfil

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3 1/2"

4 1/2"

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14 Products

Moisture-Resistant Electrical Tape

Sheet

Roll

Also known as mastic tape, this tape is thicker than other electrical tape to cushion, insulate, and seal out moisture and environmental contaminants in electrical connections.

No Facing—Conforms better than tape with a facing, so this tape can fully wrap around irregular shapes. Wrap it with vinyl tape for added electrical insulation and abrasion resistance.

EPM Rubber Facing—A thin layer of EPM rubber offers excellent electrical insulation without added bulk, even when wrapped multiple times. However, it’s less abrasion resistant than vinyl facing.

Vinyl Plastic Facing—A vinyl outer layer resists abrasion and environmental exposure, making this tape the best choice to seal your connection in a single step.

					Temp.
	Wd.	Lg.	Overall Thk.	Material	Min.	Max., ° F	Voltage Rating, V	Color		Each
Vinyl Plastic Facing







				Sheets—3M Scotch 2200

				3 1/4"	4 1/2"	0.125"	Mastic Rubber	0° F	175	600	Black	75735A67	00000


				4 1/2"	6 1/2"	0.125"	Mastic Rubber	0° F	175	600	Black	75735A68	0000




						Rolls—3M Scotch 2210

						4"	10 ft.	0.09"	Mastic Rubber	0° F	175	600	Black	75735A66	00000


						EPM Rubber Facing







										Rolls—3M Scotch 2228

										1"	10 ft.	0.065"	Mastic Rubber	Not Rated	190	600	Black	75735A71	00000


										2"	10 ft.	0.065"	Mastic Rubber	Not Rated	190	600	Black	75735A65	00000


										No Facing







														Sheets—3M Scotch 2229

														2 1/2"	3 3/4"	0.125"	Mastic Rubber	32° F	190	600	Black	75735A73	0000


														3 3/4"	6 1/2"	0.125"	Mastic Rubber	32° F	190	600	Black	75735A74	0000




																Rolls—3M Scotch 2229

																1"	10 ft.	0.125"	Mastic Rubber	32° F	190	600	Black	75735A72	00000

Electrical Putty Tape

Also known as Scotchfil, this noncorrosive putty tape wraps, stretches, and molds around irregular shapes for insulation buildup.

	Material	Temp. Range, ° F	Dielectric Strength, V/mil	Voltage Rating, V	Certification	Color		Each
3M Scotchfil







	Self-Fusing

	1 1/2"	5	0.125"	Mastic Rubber	-40 to 175	22,000	600	UL Listed	Black	75695A67	000000

Non-Hardening Caulk

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

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