Metal Insulation | McMaster-Carr

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Electrically Insulating

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For Joining

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Begins to Harden

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10 Products

Electrically Insulating Scissors for Wire Cutting and Stripping


	Wire-Stripping Notch

Insulated handles protect against shock from accidental contact with live electrical circuits. These scissors are tested to 1,000 volts to meet IEC 60900 and ASTM F1505. Also known as electricians' shears, they have a notch for stripping wire.

	Handle Material	Opening Style	Handedness	Blade Tip Shape	Blade Edge	Cutting Features	Specs. Met		Each
For Metal







	Straight Handle

	6 1/4"	1 3/4"	Stainless Steel	Plastic Handle	Manual	Right, Left	Point	Knife	Wire-Stripping Notch	ASTM F1505, IEC 60900	3185N11	000000

Low-Outgassing Silicone Rubber Sealants


Cartridge	Tube

Tested to meet ASTM E595, a standard used by NASA, these sealants fill joints and seams while releasing almost no volatile emissions that could damage sensitive electronics, even in a vacuum. Made of silicone rubber, they’re RTV (room-temperature vulcanizing), so they’ll fully harden at room temperature.

Elongation indicates flexibility—the higher the value is, the more a sealant can stretch.

Begins to Harden in 26 min.—Sealants that begin to harden in 26 min. are less likely to trap contaminants than those that take longer to harden.

Container
Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, day	Elongation	Joint Compression/Expansion Tolerance	Tensile Strength, psi	Hardness Rating	Temp. Range, ° F	Specs. Met	For Joining	Color		Each
5	Tube	26	3	610%	Not Rated	925	Medium Soft (Durometer 41A)	-45 to 390	ASTM E595	Glass Masonry Metal Plastic Rubber	Clear	4842N12	0000000
5.8	Cartridge	150	7	420%	-25% to 25%	600	Medium Soft (Durometer 36A)	-200 to 500	ASTM E595	Composite Glass Metal Plastic Rubber	White	4842N11	000000

Mildew-Resistant Silicone Rubber Sealants

Resistant to mold and mildew, these sealants are well suited to high-humidity environments. They’re non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone rubber, sealants are RTV (room-temperature vulcanizing).

Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. Sealants that are good for joining dissimilar materials also work well in environments with wide temperature fluctuation.

3M Silicone Rubber


Cartridge	Tube

	Container
Mfr. Model No.	Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, hr.	Elongation	Joint Compression/Expansion Tolerance	Hardness Rating	Temp. Range, ° F	For Joining	Specs. Met	Color (Clarity)		Each
8017	3	Tube	10	24	350%	Not Rated	Soft (Durometer 20A)	-40 to 190	Glass Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	ASTM D412	White (Clear)	74885A21	000000
8019	3	Tube	10	24	350%	Not Rated	Soft (Durometer 20A)	-40 to 190	Glass Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	ASTM D412	Clear (Clear)	74885A23	00000
8027	10.3	Cartridge	10	24	350%	Not Rated	Soft (Durometer 20A)	-40 to 190	Glass Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	ASTM D412	White (Clear)	74885A22	00000
8029	10.3	Cartridge	10	24	350%	Not Rated	Soft (Durometer 20A)	-40 to 190	Glass Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	ASTM D412	Clear (Clear)	74885A24	00000

Silicone Rubber

Cartridge

Cannot Be Sold to Canada—Silicone rubber sealants that cannot be sold to Canada are restricted due to product labeling requirements.

Container
Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, hr.	Elongation	Joint Compression/Expansion Tolerance	Temp. Range, ° F	For Joining	Mil. Spec.	Specs. Met	Color (Clarity)	Cannot Be Sold To		Each
10.1	Cartridge	20	24	430%	-25% to 25%	-80 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	Fed. Spec. TT-S-00230 Fed. Spec. TT-S-001543	ASTM C920 Type S Grade NS Class 25	Clear (Clear)	Canada	75075A711	000000

Silicone Rubber Sealants

Made from silicone rubber, these sealants are RTV (room-temperature vulcanizing). They’re non-sagging, so they won't drip from vertical and overhead surfaces.

Silicone Rubber

Nozzle-Top

Can

Cannot Be Sold Outside United States—Sealants that cannot be sold outside the United States are restricted due to chemical regulations and/or product labeling requirements.

	Hardness Rating	Temp. Range, ° F	For Joining	Food Industry Std.	Mil. Spec.	Specs. Met	Cannot Be Sold To	Color (Clarity)		Each
6 1/2 oz. Nozzle-Top Can







	24 hr. Reaches Full Strength

	10	400%	-25% to 25%	Soft (Durometer 25A)	-70 to 400	Glass Masonry Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	FDA Compliant 21 CFR 177.2600 NSF/ANSI 51	Fed. Spec. TT-S-00230 Fed. Spec. TT-S-001543 MIL-A-46106 Type I	ASTM C920 Type S Grade NS Class 25	Outside United States	White (Opaque)	75075A69	000000


	20	560%	-25% to 25%	Soft (Durometer 23A)	-80 to 500	Glass Masonry Metal Plastic Rubber Wood Metal to Glass Metal to Plastic Metal to Rubber Plastic to Glass Plastic to Rubber Rubber to Glass	—	Fed. Spec. TT-S-00230 Fed. Spec. TT-S-001543 MIL-A-46106 Type I	—	Outside United States	Red (Opaque)	75075A63	00000