Silica Insulation | McMaster-Carr

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	Material Material

Ceramic

Fabric

Silica Gel

	Maximum Temperature Maximum Temperature

Less than 500° F

1,000° to 1,999° F

2,000° to 2,999° F

	System of Measurement System of Measurement

Inch

	Thickness Thickness

	Width Width

	Length Length

	Insulation Type Insulation Type

	Sheet/Strip

	Flexibility Flexibility

	Flexible
	Rigid

	Backing Type Backing Type


Plain	Adhesive

	For Use On For Use On

Ovens and Furnaces

Pipe

Tanks

	Color Color

	Beige		Black
	Maroon		Off-White
	Orange		White

	R Value R Value

	Minimum Temperature Minimum Temperature

	Performance Properties Performance Properties

Flame Resistant

High Temperature

Moisture Resistant

	Density Density

	Heat Flow Rate Heat Flow Rate

	ID ID

	Wall Thickness Wall Thickness

3/32"

1/8"

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Reinforcement Material Reinforcement Material

Fiberglass Fiber

	Shape Shape

	Sheet and Bar

	Sleeving Construction Sleeving Construction

Braided

	Sleeving Type Sleeving Type

	Non-Expandable

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78 Products

About Selecting Thermal Insulation

About Sleeving

Ultra-Thin Aerogel Pipe Insulation

Lightweight and super thin, these fiber-reinforced silica aerogel sheets and strips flex into tight spaces other insulation can't. Use on process piping and in power-generating applications. Insulation can be layered, laminated, or wrapped in foil.

Flame-resistant insulation meets ASTM E84 0/0 for flame and smoke.

Sheets/Strips

32° to 390° Temperature Range

Temperature Range: 32° to 390° F
Heat Flow Rate: 0.11 Btu @ 75° F
Density: 10.7 lbs./cu. ft.
Color: Black

Thick.	Wd.	Lg.	R Value	Reinforcement Material	Flexibility		Each
5/64"	12"	26"	0.8	Fiberglass Fiber	Flexible	000000	000000

Flame-Resistant Sheets/Strips

32° to 1200° Temperature Range

Temperature Range: 32° to 1200° F
Heat Flow Rate: 0.16 Btu @ 75° F
Density: 12.5 lbs./cu. ft.
Color: Maroon
Specifications Met: ASTM E84 0/0 for Flame and Smoke

3/16" Thick.
Wd.	Lg.	R Value	Reinforcement Material	Flexibility		Each
1 1/2"	58"	1.23	Fiberglass Fiber	Flexible	0000000	000000
58"	60"	1.23	Fiberglass Fiber	Flexible	0000000	000000
13/32" Thick.
1 1/2"	58"	2.46	Fiberglass Fiber	Flexible	0000000	00000
58"	60"	2.46	Fiberglass Fiber	Flexible	0000000	000000

Ultra-Thin Low-Temperature Aerogel Pipe Insulation

Temperature Range: -290° to 390° F
Heat Flow Rate: 0.11 Btu @ 75° F

Able to withstand temperatures as low as -290° F, these super-thin, lightweight sheets are made of fiber-reinforced silica aerogel that can flex into tight spaces other insulation can't. Use in process piping and power-generating applications. Insulation can be layered, laminated, or wrapped in foil.

Thick.	Wd.	Lg.	R Value	Reinforcement Material	Flexibility		Each
3/16"	12"	26"	1.9	Fiberglass Fiber	Flexible	000000	000000
3/16"	58"	60"	1.9	Fiberglass Fiber	Flexible	0000000	000000

Acid-Resistant Silica Insulation Sheets for Furnaces

Temperature Range: 0° to 2000° F
Heat Flow Rate: 0.78 Btu @ 800° F
Density: 10 lbs./cu. ft.
Color: White

Commonly used in furnaces and engine compartments, these flexible silica fiber sheets resist corrosive acids. They perform best at temperatures above 1000° F.

Thick.	Wd.	R Value	Flexibility	Lengths, ft.		Per Ft.
1/4"	36"	0.3	Flexible	1, 2, 10, 25	00000000	000000
1/2"	36"	0.6	Flexible	1, 2, 10, 25	00000000	00000
1"	36"	1.3	Flexible	1, 2, 10, 25	00000000	00000

Rigid Silica Ultra-Insulation Sheets for Furnaces

Temperature Range: 0° to 1925° F
Heat Flow Rate: 0.28 Btu @ 1470° F
Density: 19 lbs./cu. ft.
Color: White
Specifications Met: ASTM E84 0/0 for Flame and Smoke

Typically used in ovens and furnaces, these are the most efficient of our rigid high-temperature insulation sheets. Please note that they require special care when installing since the crumbly material is difficult to work with and will crack easily. Sheets lose strength over time and are intended to be installed behind another facing or insulation material. They are flame resistant, meeting ASTM E84 0/0 for flame and smoke. Insulation performs best at temperatures above 1000° F.

Thick.	Wd.	Lg.	R Value	Flexibility		Each
3/16"	19 1/2"	23 1/2"	0.7	Rigid	000000	000000
1/4"	19 1/2"	23 1/2"	0.9	Rigid	000000	00000
3/8"	23 1/2"	39"	1.3	Rigid	000000	000000
3/4"	23 1/2"	39"	2.7	Rigid	000000	000000
1"	23 1/2"	39"	3.6	Rigid	000000	000000

Silica High-Temperature Sleeving

Made of silica, this sleeving can withstand higher temperatures than fiberglass. It resists open flame and molten metal splash, so it’s a good choice for welding applications. It also withstands oil and gasoline. Because this sleeving is non-expandable, it does not stretch, so it’s best for applications where you know the exact diameter of the items you need to protect.

						Per Ft.
ID	Wall Thick.	Temperature Range, °F	Color	Lengths, ft.		1-49	50-Up
Silica Fabric
1/4"	3/32"	-100° to 1800°	White	1, 5, 10, 25, 50	0000000	00000	00000
3/8"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	0000	0000
1/2"	3/32"	-100° to 1800°	White	1, 5, 10, 25, 50	0000000	0000	0000
1/2"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	0000	0000
5/8"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	0000	0000
3/4"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	0000	0000
7/8"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	0000	0000
1"	3/32"	-100° to 1800°	White	1, 5, 10, 25, 50	0000000	0000	0000
1"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	0000	0000
1 1/4"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	0000	0000
1 1/2"	3/32"	-100° to 1800°	White	1, 5, 10, 25, 50	0000000	0000	0000
1 1/2"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	0000	0000
1 3/4"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	00000	0000
2"	3/32"	-100° to 1800°	White	1, 5, 10, 25, 50	0000000	00000	0000
2"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	00000	0000
2 1/2"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	00000	00000
3"	3/32"	-100° to 1800°	White	1, 5, 10, 25, 50	0000000	00000	00000
3"	1/8"	-40° to 2300°	White	1, 5, 10, 25, 50	00000000	00000	00000
4"	3/32"	-100° to 1800°	White	1, 5, 10, 25, 50	0000000	00000	00000
6"	3/32"	-100° to 1800°	White	1, 5, 10, 25, 50	0000000	00000	00000

Flexible Silica Fabric Sheets and Strips

More flexible than standard silica fabric, wrap these sheets and strips to insulate pipes, wires, and hose. This fabric also protects against welding spatter and can be used as curtains, covers, and splash shields. Containing 96% silica, this material has one of the highest temperature ratings of any fabric we offer.

Plain Backing
Wd.	Thick.	Density, oz./sq. yd.	Max. Temperature, °F	Color	Adhesive Type	Max. Adhesive Temperature, °F	Lengths, ft.		Per Ft.
1"	0.062"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50, 100	0000000	00000
1"	0.125"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50	0000000	0000
1"	0.250"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50	0000000	0000
1 1/2"	0.062"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50, 100	0000000	0000
1 1/2"	0.125"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50	0000000	0000
2"	0.062"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50, 100	0000000	0000
2"	0.125"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50	0000000	0000
2"	0.250"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50	0000000	00000
3"	0.250"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50	0000000	00000
4"	0.062"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50, 100	0000000	0000
4"	0.125"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50	0000000	0000
6"	0.062"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50, 100	0000000	0000
6"	0.125"	Not Rated	1800°	Beige	__	__	2, 5, 10, 20, 50	0000000	00000
36"	0.026"	18	1800°	Beige	__	__	1, 3, 5, 10, 20, 50	000000	00000
36"	0.054"	36	1800°	Beige	__	__	1, 3, 5, 10, 20, 50	000000	00000
Adhesive Backing
1"	0.030"	18	1800°	Beige	Rubber	275°	2, 5, 10, 20, 50, 100	0000000	0000
1 1/2"	0.030"	18	1800°	Beige	Rubber	275°	2, 5, 10, 20, 50, 100	0000000	0000
2"	0.030"	18	1800°	Beige	Rubber	275°	2, 5, 10, 20, 50, 100	0000000	0000
4"	0.030"	18	1800°	Beige	Rubber	275°	2, 5, 10, 20, 50, 100	0000000	0000

Silica Fabric Sheets

Commonly used as curtains, covers, insulation, and splash shields, these sheets can be used to protect against welding spatter. Containing 96% silica, this material resists the highest temperatures of any fabric we offer.

Wd.	Thick.	Density, oz./sq. yd.	Max. Temperature, °F	Color	Lengths, ft.		Per Ft.
39"	0.090"	40	1800°	Off-White	1, 3, 5, 10, 20, 50	0000000	000000

Square-Profile Ultra High-Temperature Rope Edge Seals

The flat edges on these square-profile seals provide more sealing surface than round-profile seals. They’re made of 98% silica for excellent temperature resistance. They’re flexible and will conform to uneven surfaces. Push them into the groove that’s commonly built into oven doors, furnaces, and tanks. They resist water, salts, and diluted acids.

							Per Ft.
Wd.	Thick.	Temp. Range, °F	For Use Outdoors	Color	Lengths, ft.		1-24	25-Up
Silica Fiber—Plain Back
3/8"	3/8"	-40° to 2300°	No	White	1, 5, 10, 25, 50, 100, 300	00000000	00000	00000
1/2"	1/2"	-40° to 2300°	No	White	1, 5, 10, 25, 50, 100, 200	00000000	0000	0000
5/8"	5/8"	-40° to 2300°	No	White	1, 5, 10, 25, 50, 100	00000000	00000	0000
3/4"	3/4"	-40° to 2300°	No	White	1, 5, 10, 25, 50, 75	00000000	00000	00000
7/8"	7/8"	-40° to 2300°	No	White	1, 5, 10, 25, 60	00000000	00000	00000
1"	1"	-40° to 2300°	No	White	1, 5, 10, 25, 50	00000000	00000	00000
1 1/4"	1 1/4"	-40° to 2300°	No	White	1, 5, 10, 25, 30	00000000	00000	00000
1 1/2"	1 1/2"	-40° to 2300°	No	White	1, 5, 15, 20	00000000	00000	00000

Round-Profile Ultra High-Temperature Rope Edge Seals

Made of 96% silica for excellent temperature resistance. These round-profile seals are flexible and will conform to uneven surfaces. Push them into the groove that’s commonly built into oven doors, furnaces, and tanks. They resist water, salts, and diluted acids.

						Per Ft.
Wd.	Temp. Range, °F	For Use Outdoors	Color	Lengths, ft.		1-24	25-Up
Silica Fiber—Plain Back
1/4"	-100° to 1800°	No	White	5, 10, 25, 50, 100	0000000	00000	00000
3/8"	-100° to 1800°	No	White	1, 5, 10, 25, 50, 100	0000000	0000	0000
1/2"	-100° to 1800°	No	White	1, 5, 10, 25, 50, 100	0000000	0000	0000
3/4"	-100° to 1800°	No	White	1, 5, 10, 25, 50, 100	0000000	00000	0000
1"	-100° to 1800°	No	White	1, 5, 10, 25, 50, 75	0000000	00000	00000

Ultra High-Temperature Flange-Mount Rope Edge Seals

These seals have a strong Inconel core covered with woven silica yarn that’s been treated to withstand extremely high heat. They resist most refrigerants, salts, and grease. The flange on these seals slides into a slot that is commonly found on oven, furnace, and boiler doors; it can be positioned to cover large gaps.

			Core							Per Ft.
O'all Wd.	Wd.	Flange Thick.	Material	Construction	Temp. Range, °F	For Use Outdoors	Color	Lengths, ft.		1-24	25-Up
Silica Fabric—Plain Back
1"	3/8"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	00000	00000
1"	1/2"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	0000	0000
1 1/4"	1/2"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	0000	0000
1 1/2"	3/8"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	0000	0000
1 1/2"	1/2"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	0000	0000
1 1/2"	3/4"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	00000	0000
2"	1/2"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	0000	0000
2"	3/4"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	00000	0000
2 1/2"	3/4"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	00000	0000
3"	3/4"	3/32"	Inconel 625 Nickel	Mesh	-40° to 2300°	No	Orange	1, 5, 10, 25	0000000	00000	00000