Mica Gaskets | McMaster-Carr

Filter by

Material

System of Measurement

Thickness

Shape

Width

Maximum Temperature

Length

Performance

Electrically Insulating

Extra High Temperature

Color

Clarity

Dielectric Strength

Minimum Temperature

REACH

DFARS Specialty Metals

Exempt

RoHS

Compliant

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

Yes

Export Control Classification Number (ECCN)

Flammability Rating

Hardness

Thermal Conductivity @ Temperature

7.98 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F

9.2 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F

10.16 BTU⋅in/(hr⋅ft²⋅°F) @ 212° F

Porosity

13%

Compressive Strength

32,000 psi

40,000 psi

Tensile Strength

2,000 psi to 9,999 psi

10,000 psi to 39,999 psi

Flexural Strength

175 Products

Flexible Extra-High-Temperature Electrically Insulating Mica Sheets

With a silicone resin binder, this mica can be used as wrap-around thermal insulation in applications with temperatures up to 1832° F. Also known as phlogopite and amber mica. It meets UL 94 V-0 for flame retardance.

	Thk. Tolerance	Dielectric Strength, V/mil	Max. Temp., ° F		Each
23" × 39"



	0.004"	-0.0016" to 0.0016"	508	1,832	00000000	000000


	0.006"	-0.0016" to 0.0016"	508	1,832	000000000	00000
	0.008"	-0.0016" to 0.0016"	508	1,832	00000000	00000
	0.010"	-0.0016" to 0.0016"	508	1,832	000000000	00000
	0.012"	-0.0016" to 0.0016"	508	1,832	00000000	00000
	0.016"	-0.0016" to 0.0016"	508	1,832	00000000	00000
	0.020"	-0.0024" to 0.0024"	508	1,832	00000000	00000
	0.024"	-0.0024" to 0.0024"	508	1,832	00000000	00000
	0.032"	-0.0028" to 0.0028"	508	1,832	000000000	00000
	0.040"	-0.0032" to 0.0032"	508	1,832	000000000	00000

Extra-High-Temperature Electrically Insulating Mica Sheets

With a silicone resin binder, this mica can be used in thermal insulation applications with temperatures up to 1832° F. Also known as phlogopite and amber mica. It meets UL 94 V-0 for flame retardance.

	Thk. Tolerance	Dielectric Strength, V/mil	Max. Temp., ° F		Each
10" × 12"



	1/8"	-0.0125" to 0.0125"	635	1,832	00000000	000000


	1/4"	-0.0250" to 0.0250"	635	1,832	00000000	000000
	1/2"	-0.0500" to 0.0500"	635	1,832	00000000	000000
	3/4"	-0.0750" to 0.0750"	635	1,832	00000000	000000
	1"	-0.1000" to 0.1000"	635	1,832	00000000	000000


	20" × 24"



			1/8"	-0.0125" to 0.0125"	635	1,832	00000000	000000


			1/4"	-0.0250" to 0.0250"	635	1,832	00000000	000000
			1/2"	-0.0500" to 0.0500"	635	1,832	00000000	000000
			3/4"	-0.0750" to 0.0750"	635	1,832	00000000	000000
			1"	-0.1000" to 0.1000"	635	1,832	00000000	000000


			23" × 39"



					0.008"	-0.0008" to 0.0008"	635	1,832	00000000	00000


					0.012"	-0.0012" to 0.0012"	635	1,832	00000000	00000
					0.016"	-0.0016" to 0.0016"	635	1,832	00000000	00000
					0.020"	-0.0020" to 0.0020"	635	1,832	00000000	00000
					0.024"	-0.0024" to 0.0024"	635	1,832	00000000	00000

Electrically Insulating Mica Sheets

Also called muscovite mica, this mica is an excellent electrical insulator that resists temperatures up to 930° F. It's often used to insulate circuit breakers and heating elements. Meets UL 94 V-0 for flame retardance.

	Thk. Tolerance	Dielectric Strength, V/mil	Max. Temp., ° F		Each
10" × 12"



	1/8"	-0.0125" to 0.0125"	635	930	0000000	000000


	1/4"	-0.0250" to 0.0250"	635	930	0000000	00000
	1/2"	-0.0500" to 0.0500"	635	930	0000000	000000
	3/4"	-0.0750" to 0.0750"	635	930	0000000	000000
	1"	-0.1000" to 0.1000"	635	930	0000000	000000


	20" × 24"



			1/8"	-0.0125" to 0.0125"	635	930	0000000	000000


			1/4"	-0.0250" to 0.0250"	635	930	0000000	000000
			1/2"	-0.0500" to 0.0500"	635	930	0000000	000000
			3/4"	-0.0750" to 0.0750"	635	930	0000000	000000
			1"	-0.1000" to 0.1000"	635	930	0000000	000000


			23" × 39"



					0.004"	-0.0004" to 0.0004"	635	930	0000000	00000


					0.008"	-0.0008" to 0.0008"	635	930	0000000	00000
					0.012"	-0.0012" to 0.0012"	635	930	0000000	00000
					0.016"	-0.0016" to 0.0016"	635	930	0000000	00000
					0.020"	-0.0020" to 0.0020"	635	930	0000000	00000
					0.024"	-0.0024" to 0.0024"	635	930	0000000	00000

Flexible Electrically Insulating Mica Sheets

Also called muscovite mica, this mica is an excellent electrical insulator that resists temperatures up to 930° F. It's often used as wrap-around insulation for circuit breakers and heating elements. Meets UL 94 V-0 for flame retardance.

	Thk. Tolerance	Dielectric Strength, V/mil	Max. Temp., ° F		Each
23" × 39"



	0.004"	-0.0004" to 0.0004"	508	930	00000000	000000


	0.008"	-0.0008" to 0.0008"	508	930	00000000	00000
	0.012"	-0.0012" to 0.0012"	508	930	00000000	00000
	0.016"	-0.0016" to 0.0016"	508	930	00000000	00000
	0.020"	-0.0020" to 0.0020"	508	930	00000000	00000
	0.024"	-0.0024" to 0.0024"	508	930	00000000	00000

Easy-Machine Glass-Mica Ceramic Sheets

Machine complicated shapes and precision parts from this glass-mica ceramic in a fraction of the time it would take using other types of fired ceramic. Its good electrical and thermal resistance make it a common choice for heating and soldering fixtures. Also known as Mykroy/Mycalex.

-330° F to 930° F

Image of Product. Front orientation. Ceramic. Easy-Machine Glass-Mica Ceramic Sheets.

								2" × 5"		10" × 14"
Thk.	Thk. Tolerance	Color	Dielectric Strength, V/mil	Compressive Strength, psi	Fabrication	Performance	Porosity		Each		Each
1/16"	-0.015" to 0.015"	Gray	530	40,000	Fired	Easy Machine, Electrically Insulating	13%	00000000	0000000	00000000	0000000
1/8"	-0.015" to 0.015"	Gray	530	40,000	Fired	Easy Machine, Electrically Insulating	13%	00000000	000000	00000000	000000
1/4"	-0.015" to 0.015"	Gray	530	40,000	Fired	Easy Machine, Electrically Insulating	13%	00000000	000000	00000000	000000
3/8"	-0.015" to 0.015"	Gray	530	40,000	Fired	Easy Machine, Electrically Insulating	13%	00000000	000000	00000000	000000
1/2"	-0.015" to 0.015"	Gray	530	40,000	Fired	Easy Machine, Electrically Insulating	13%	00000000	000000	00000000	000000
3/4"	-0.015" to 0.015"	Gray	530	40,000	Fired	Easy Machine, Electrically Insulating	13%	00000000	000000	00000000	000000
1"	-0.015" to 0.015"	Gray	530	40,000	Fired	Easy Machine, Electrically Insulating	13%	00000000	000000	00000000	000000

-330° F to 1,100° F

								3" × 3"		4" × 6"		6" × 6"
Thk.	Thk. Tolerance	Color	Dielectric Strength, V/mil	Compressive Strength, psi	Fabrication	Performance	Porosity		Each		Each		Each
1/8"	-0.015" to 0.015"	Off-White	420	32,000	Fired	Easy Machine, Electrically Insulating	13%	0000000	000000	0000000	0000000	0000000	0000000
1/4"	-0.015" to 0.015"	Off-White	420	32,000	Fired	Easy Machine, Electrically Insulating	13%	0000000	00000	0000000	000000	0000000	000000
1/2"	-0.015" to 0.015"	Off-White	420	32,000	Fired	Easy Machine, Electrically Insulating	13%	0000000	00000	0000000	000000	0000000	000000
3/4"	-0.015" to 0.015"	Off-White	420	32,000	Fired	Easy Machine, Electrically Insulating	13%	0000000	000000	0000000	000000	0000000	000000
1"	-0.015" to 0.015"	Off-White	420	32,000	Fired	Easy Machine, Electrically Insulating	13%	0000000	000000	0000000	000000	0000000	000000

Extra High-Temperature Easy-Machine Glass-Mica Ceramic Sheets and Bars

Also known as Macor, this glass-mica ceramic withstands temperatures up to 1470° F. You can machine complicated shapes and precision parts from it in a fraction of the time it would take using other types of fired ceramic. Its good electrical and thermal resistance make it a common choice for heating and soldering fixtures.

Sheets

			Temp.								2" × 2"		3" × 3"		4" × 4"		6" × 6"		6" × 12"
Thk.	Thk. Tolerance	Color	Min.	Max., ° F	Fabrication	Performance	Dielectric Strength, V/mil	Porosity	Compressive Strength, psi	Hardness		Each		Each		Each		Each		Each



	1/16"	0.000" to 0.015"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	000000	0000000	000000	00000000	0000000	0000000	0000000	00000000	0000000


	1/8"	0.000" to 0.015"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	00000	0000000	00000	00000000	000000	0000000	000000	00000000	000000
	3/16"	0.000" to 0.015"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	00000	0000000	000000	00000000	000000	0000000	000000	00000000	000000
	1/4"	0.000" to 0.015"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	00000	0000000	000000	00000000	000000	0000000	000000	00000000	000000
	5/16"	0.000" to 0.015"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	00000	0000000	000000	00000000	000000	0000000	000000	00000000	000000
	3/8"	0.000" to 0.030"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	00000	0000000	000000	00000000	000000	0000000	000000	00000000	000000
	1/2"	0.000" to 0.030"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	00000	0000000	000000	00000000	000000	0000000	000000	00000000	000000
	5/8"	0.000" to 0.060"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	00000	0000000	000000	00000000	000000	0000000	000000	00000000	000000
	3/4"	0.000" to 0.060"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	000000	00000000	000000	00000000	000000	00000000	000000	00000000	00000000
	1"	0.000" to 0.060"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	13%	32,000	Rockwell A48	00000000	000000	0000000	000000	00000000	000000	0000000	000000	00000000	00000000

Bars

				Temp.
	Wd.	Lg.	Color	Min.	Max., ° F	Fabrication	Performance	Dielectric Strength, V/mil	Compressive Strength, psi	Porosity		Each
1/16" Thick (0.000" to 0.015" Thickness Tolerance)



		1"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


		2"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


		1/8" Thick (0.000" to 0.015" Thickness Tolerance)



				1"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000


				2"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


				3/16" Thick (0.000" to 0.015" Thickness Tolerance)



						1"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


						2"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


						1/4" Thick (0.000" to 0.015" Thickness Tolerance)



								1/4"	3"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000


								1/4"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000
								1/4"	12"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000
								1"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
								2"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


								5/16" Thick (0.000" to 0.015" Thickness Tolerance)



										1"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


										2"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


										3/8" Thick (0.000" to 0.030" Thickness Tolerance)



												3/8"	3"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000


												3/8"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000
												3/8"	12"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
												1"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
												2"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


1/2" Thick (0.000" to 0.030" Thickness Tolerance)



												1/2"	3"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000


												1/2"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000
												1/2"	12"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
												1"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
		2"										6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


		3/4" Thick (0.000" to 0.060" Thickness Tolerance)



												3/4"	3"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	00000


												3/4"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
				3/4"								12"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
				1"	6"							White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
				2"	6"							White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


				1" Thick (0.000" to 0.060" Thickness Tolerance)



												1"	3"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


						1"	6"					White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
						1"	12"					White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
						2"	6"					White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


						2" Thick (0.000" to 0.060" Thickness Tolerance)



												2"	3"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000


												2"	6"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000
								2"				12"	White	Not Rated	1,470	Fired	Easy Machine, Electrically Insulating, Extra High Temperature	1,140	32,000	13%	0000000	000000

Clear Electrically Insulating Mica

An excellent electrical insulator, use this mica as see-through insulation. It's also known as muscovite mica.

	Thk. Tolerance	Dielectric Strength, V/mil	Max. Temp., ° F		Each
3" × 5"



	0.004"	-0.001" to 0.001"	3,000	930	0000000	00000


	4" × 8"



			0.004"	-0.001" to 0.001"	3,000	930	0000000	00000


			5" × 8"



					0.004"	-0.001" to 0.001"	3,000	930	0000000	00000


					6" × 7"



							0.004"	-0.001" to 0.001"	3,000	930	0000000	00000

Electrically Insulating Tape Wire Sleeving

Wrap your wire and cable to prevent electricity and heat from dissipating, even in high-voltage areas. Often used near generators and transformers, an acrylic resin in this sleeving insulates and protects your components. The sleeving meets IEC 60371 for its material’s electrical insulation properties. You can wrap it like tape around wire and cable while they’re installed, so it’s great for emergency patches. Wrap more layers for more protection. Made of mica and glass between two layers of polyester film, this sleeving has high tensile strength and good resistance to scrapes.

Glass, Mica, Polyester Plastic with Acrylic Plastic Coating with Adhesive Liner

						100 ft. Long
Wd.	Thk.	For Max. Voltage, V AC	Temp. Range, ° F	Specs. Met	Color		Each



	1/2"	0.006"	13,800	32 to 300	IEC 60371	Gray	0000000	000000


	1"	0.006"	13,800	32 to 300	IEC 60371	Gray	0000000	00000
	2"	0.006"	13,800	32 to 300	IEC 60371	Gray	0000000	00000

Extra-High-Temperature Mica Washers

These washers won't melt, stick, or become brittle, even when exposed to temperatures as high as 1050° F. They make excellent insulators and are often used to secure electrical connections in transformers. Mica can chip and flake due to wear, however, so these washers are not recommended for high-vibration applications.

				Temp. Range
For Screw Size	ID	OD	Thk.	Min.	Max., ° F	Color	Pkg. Qty.		Pkg.
No. 0	0.072"	0.219"	0.004" to 0.006"	Not Rated	1,050	Beige	5	000000000	00000
No. 2	0.098"	0.265"	0.001" to 0.003"	Not Rated	1,050	Beige	10	000000000	0000
No. 3	0.109"	0.312"	0.004" to 0.006"	Not Rated	1,050	Beige	5	000000000	0000
No. 4	0.118"	0.375"	0.001" to 0.003"	Not Rated	1,050	Beige	10	000000000	0000
No. 6	0.156"	0.296"	0.001" to 0.003"	Not Rated	1,050	Beige	10	000000000	0000
No. 8	0.176"	0.375"	0.004" to 0.006"	Not Rated	1,050	Beige	10	000000000	0000
No. 10	0.195"	0.750"	0.004" to 0.006"	Not Rated	1,050	Beige	10	000000000	0000