Ceramic Bulb Seals | McMaster-Carr

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	Material Material

Fabric

Ceramic

	System of Measurement System of Measurement

Inch

	Width Width

	Thickness Thickness

	Length Length

	Maximum Temperature Maximum Temperature

1,000° to 1,499° F

1,500° F or greater

	For Use With For Use With

	Edge Seal Style Edge Seal Style

	Bulb

	Seal Construction Seal Construction

	Solid

	Color Color

	White

	Backing Type Backing Type

	Plain

	Mount Type Mount Type

Press Fit

Slide In

	For Use Outdoors For Use Outdoors

	Minimum Temperature Minimum Temperature

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

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Overall Width Overall Width

7/8"

1 3/4"

	Specifications Met Specifications Met

Mil. Spec.

	Flange Thickness Flange Thickness

3/16"

	Core Material Core Material

Nickel

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30 Products

Ultra High-Temperature Chemical-Resistant Flange-Mount Rope Edge Seals

A ceramic cover makes these seals more chemical resistant than the seals with a silica cover. Seals resist acids (except hydrofluoric and phosphoric), diluted alkalies, 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.

Ceramic Fabric—Plain Back
O'all Wd.	Wd.	Flange Thick.	Core Material	Max. Temp., °F	For Use Outdoors	Color		1 ft.	10 ft.	25 ft.
7/8"	3/8"	3/16"	Inconel 625 Nickel	1700°	No	White	0000000	000000	0000000	0000000
1"	1/2"	3/16"	Inconel 625 Nickel	1700°	No	White	0000000	00000	000000	000000
1 3/4"	3/4"	3/16"	Inconel 625 Nickel	1700°	No	White	0000000	00000	000000	000000
2"	1/2"	3/16"	Inconel 625 Nickel	1700°	No	White	0000000	00000	000000	000000
2"	1"	3/16"	Inconel 625 Nickel	1700°	No	White	0000000	00000	000000	000000
3"	1"	3/16"	Inconel 625 Nickel	1700°	No	White	0000000	00000	000000	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	00000
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- and Low-Temperature Rope Edge Seals

A wide temperature range makes these ceramic seals equally suitable for use in cryogenic applications as they are for extreme-heat applications. They’re made from tightly woven calcium alumina silicate, so they won’t burn and they resist molten metal splash. They also resist steam, salts, grease, detergents, bleach, and hydraulic fluid; however, they will absorb these substances. Push them into the groove that’s commonly built into oven doors, furnaces, and tanks.

Ceramic Fiber—Plain Back
Wd.	Temp. Range, °F	For Use Outdoors	Specifications Met	Color		5 ft.	10 ft.	25 ft.
1/8"	-300° to 1100°	No	MIL-I-24244	White	0000000	000000	000000	000000
1/4"	-300° to 1100°	No	MIL-I-24244	White	0000000	00000	00000	00000
3/8"	-300° to 1100°	No	MIL-I-24244	White	0000000	00000	00000	00000
1/2"	-300° to 1100°	No	MIL-I-24244	White	0000000	00000	00000	00000
3/4"	-300° to 1100°	No	MIL-I-24244	White	0000000	00000	000000	000000
1"	-300° to 1100°	No	MIL-I-24244	White	0000000	00000	00000	000000

Ultra High- and Low-Temperature Ultra-Conformable Rope Edge Seals

Alumina silicate is loosely woven to create these ceramic seals that are stronger, more flexible, and able to resist higher temperatures than Ultra High- and Low-Temperature Rope Edge Seals. They are commonly used as to tie products together during high-temperature processing, but they can handle cryogenic applications just as well. They won’t burn and they resist molten metal splash. These seals also resist steam, salts, grease, detergents, bleach, and hydraulic fluid; however, they will absorb these substances. Push them into the groove that’s commonly built into oven doors, furnaces, and tanks.

Ceramic Fiber—Plain Back
Wd.	Temp. Range, °F	For Use Outdoors	Specifications Met	Color		5 ft.	10 ft.	25 ft.
1/4"	-300° to 2300°	No	MIL-I-24244	White	0000000	000000	000000	000000
3/8"	-300° to 2300°	No	MIL-I-24244	White	0000000	00000	00000	000000
1/2"	-300° to 2300°	No	MIL-I-24244	White	0000000	00000	00000	000000
3/4"	-300° to 2300°	No	MIL-I-24244	White	0000000	00000	000000	000000
1"	-300° to 2300°	No	MIL-I-24244	White	0000000	000000	000000	000000