Fillers for Enclosures and Equipment

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98 Products

About Selecting Thermal Insulation

Compare R-value and temperature range to find the insulation material that best suits your application.

Humidity-Resistant Paper Insulation Sheets

Often used in high-humidity applications for its low moisture absorption, this flexible paper insulation is made of inorganic materials. It’s typically used in appliances and electrical devices. Insulation meets UL 94 V-0 and UL 94 5VA for flame resistance.

93 lb/ft³ Density

Image of Product. Front orientation. Insulation Sheets. Humidity-Resistant Paper Insulation Sheets.

	Lg., ft.	Insulation R Value	Flexibility	Temp. Range, ° F	Heat Flow Rate @ Temp.	Color	Performance	Flammability Rating		Each
0.015" Thick



	36"	2	0.06	Flexible	0 to 265	1.73 BTU/hr @ 355° F	Off-White	Flame Resistant, Moisture Resistant, Humidity Resistant	UL 94 V-0, UL 94 5VA	9583T22	000000

Abrasion-Resistant Rigid Calcium Silicate Insulation Sheets

Made of high-strength calcium silicate, these durable sheets withstand high temperatures and are often used in power-generating applications.

14.5 lb/ft³ Density

Image of Product. Front orientation. Insulation Sheets. Abrasion-Resistant Rigid Calcium Silicate Insulation Sheets.

Flame Resistant—Flame-resistant sheets meet ASTM E84 0/0 for flame and smoke.

	Lg., ft.	Insulation R Value	Flexibility	Performance	Max. Temp., ° F	Heat Flow Rate @ Temp.	Color	Flammability Rating	Pkg. Qty.		Pkg.
1 1/2" Thick



	6"	3	2.1	Rigid	Abrasion Resistant, Flame Resistant	1,200	0.73 BTU/hr @ 800° F	Gold	ASTM E84 0/0 for Flame and Smoke	2	9391K51	000000


	12"	3	2.1	Rigid	Abrasion Resistant, Flame Resistant	1,200	0.73 BTU/hr @ 800° F	Gold	ASTM E84 0/0 for Flame and Smoke	2	9391K52	00000


	2" Thick



			6"	3	2.7	Rigid	Abrasion Resistant, Flame Resistant	1,200	0.73 BTU/hr @ 800° F	Gold	ASTM E84 0/0 for Flame and Smoke	2	9391K61	00000


			12"	3	2.7	Rigid	Abrasion Resistant, Flame Resistant	1,200	0.73 BTU/hr @ 800° F	Gold	ASTM E84 0/0 for Flame and Smoke	2	9391K62	000000
			18"	3	2.7	Rigid	Abrasion Resistant, Flame Resistant	1,200	0.73 BTU/hr @ 800° F	Gold	ASTM E84 0/0 for Flame and Smoke	2	9391K63	000000

40 lb/ft³ Density

Sheets with a density of 40 lb/ft³ can be machined.

Flame Resistant—Flame-resistant sheets meet ASTM E84 0/0 for flame and smoke.

	Lg., ft.	Insulation R Value	Flexibility	Performance	Max. Temp., ° F	Heat Flow Rate @ Temp.	Color	Flammability Rating		Each
1/2" Thick



	12"	1	0.6	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K31	000000


	24"	4	0.6	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K41	000000
	48"	4	0.6	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K61	000000


	3/4" Thick



			12"	1	0.9	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K32	00000


			24"	4	0.9	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K42	000000
			48"	4	0.9	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K62	000000


			1" Thick



					12"	1	1.3	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K33	00000


					24"	4	1.3	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K43	000000
					48"	4	1.3	Rigid	Abrasion Resistant, Flame Resistant	1,700	0.8 BTU/hr @ 800° F	White	ASTM E84 0/0 for Flame and Smoke	9353K63	000000

55 lb/ft³ Density

Sheets with a density of 55 lb/ft³ stand up to heavy compression.

	Lg., ft.	Insulation R Value	Flexibility	Performance	Max. Temp., ° F	Heat Flow Rate @ Temp.	Color		Each
1/2" Thick



	12"	1	0.5	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K12	000000


	24"	4	0.5	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K22	000000
	48"	4	0.5	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K32	000000


	1" Thick



			12"	1	1	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K14	00000


			24"	4	1	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K24	000000
			48"	4	1	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K34	00000000


			1 1/2" Thick



					12"	1	1.4	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K16	000000


					24"	4	1.4	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K26	000000
					48"	4	1.4	Rigid	Abrasion Resistant	1,700	1.05 BTU/hr @ 800° F	White	93505K36	00000000

Abrasion-Resistant Silicone Foam Insulation Sheets

The fiberglass facing on these flexible silicone foam sheets protects against highly abrasive conditions and resists tearing.

13 lb/ft³ Density

Image of Product. Front orientation. Insulation Sheets. Abrasion-Resistant Silicone Foam Insulation Sheets.

										Sheets with Fiberglass Fabric Facing
	Wd.	Lg., ft.	Insulation R Value	Flexibility	Temp. Range, ° F	Heat Flow Rate @ Temp.	Color	Performance	Flammability Rating	Facing Color		Each
1/8" Thick



		36"	3	0.3	Flexible	-65 to 390	0.39 BTU/hr @ 75° F	White	Abrasion Resistant	UL 94 HF-1, UL 94 V-0	White	9158T22	0000000


		1/4" Thick



				36"	3	0.6	Flexible	-65 to 390	0.39 BTU/hr @ 75° F	White	Abrasion Resistant	UL 94 HF-1, UL 94 V-0	White	9158T23	000000


				3/8" Thick



						36"	3	1	Flexible	-65 to 390	0.39 BTU/hr @ 75° F	White	Abrasion Resistant	UL 94 HF-1, UL 94 V-0	White	9158T24	00000000


						1/2" Thick



								36"	3	1.3	Flexible	-65 to 390	0.39 BTU/hr @ 75° F	White	Abrasion Resistant	UL 94 HF-1, UL 94 V-0	White	9158T25	00000000

Contact Adhesives

		Each
16 fl. oz. Brush-Top Can	4463K211	000000

Crack-Resistant Rigid Polyimide Insulation Sheets

Even when subjected to heavy compression, these rigid polyimide sheets won't crack. To use outdoors, add metal jacketing.

12 lb/ft³ Density

Image of Product. Front orientation. Insulation Sheets. Crack-Resistant Rigid Polyimide Insulation Sheets.

Sheets with a density of 12 lb/ft³ are easier to cut than denser polyimide insulation sheets, which makes them good for die-punching applications. They are not, however, good for machining.

	Lg.	Insulation R Value	Flexibility	Temp. Range, ° F	Heat Flow Rate @ Temp.	Color	Performance	Flammability Rating		Each
1/8" Thick



	24"	24"	0.5	Rigid	-300 to 550	0.24 BTU/hr @ 75° F	Gold	Crack Resistant	UL 94 V-0	93015K62	000000


	48"	48"	0.5	Rigid	-300 to 550	0.24 BTU/hr @ 75° F	Gold	Crack Resistant	UL 94 V-0	93015K11	000000


	3/16" Thick



			24"	24"	0.8	Rigid	-300 to 550	0.24 BTU/hr @ 75° F	Gold	Crack Resistant	UL 94 V-0	93015K64	000000


			48"	48"	0.8	Rigid	-300 to 550	0.24 BTU/hr @ 75° F	Gold	Crack Resistant	UL 94 V-0	93015K12	000000


			1/4" Thick



					24"	24"	1	Rigid	-300 to 550	0.24 BTU/hr @ 75° F	Gold	Crack Resistant	UL 94 V-0	93015K66	000000


					48"	48"	1	Rigid	-300 to 550	0.24 BTU/hr @ 75° F	Gold	Crack Resistant	UL 94 V-0	93015K13	000000


					3/8" Thick



							24"	24"	1.6	Rigid	-300 to 550	0.24 BTU/hr @ 75° F	Gold	Crack Resistant	UL 94 V-0	93015K68	000000

60 lb/ft³ Density

Sheets with a density of 60 lb/ft³ are more durable than less dense polyimide insulation sheets, so they can stand up to machining. They’re often used for mold bases or press insulation.

	Lg.	Insulation R Value	Flexibility	Temp. Range, ° F	Heat Flow Rate @ Temp.	Color	Performance	Flammability Rating		Each
1/4" Thick



	12"	12"	0.3	Rigid	-300 to 550	0.8 BTU/hr @ 75° F	Brown	Crack Resistant	UL 94 V-0	9036N11	0000000


	12"	24"	0.3	Rigid	-300 to 550	0.8 BTU/hr @ 75° F	Brown	Crack Resistant	UL 94 V-0	9036N14	000000
	24"	24"	0.3	Rigid	-300 to 550	0.8 BTU/hr @ 75° F	Brown	Crack Resistant	UL 94 V-0	9036N18	000000

Fiberglass Insulation Sheets

These lightweight, flexible fiberglass sheets are typically used to insulate equipment and appliances.

For Enclosures and Equipment

Image of Product. Front orientation. Insulation Sheets. Fiberglass Insulation Sheets.

0° F to 350° F—Sheets with temperature range of 0° to 350° F can be layered to increase efficiency.

Thk.	Wd.	Lg., ft.	Insulation R Value	Flexibility	Temp. Range, ° F	Heat Flow Rate @ Temp.	Density, lb/ft³	Color	Flammability Rating	Pkg. Qty.		Pkg.
1"	48"	10	3.8	Flexible	0 to 350	0.26 BTU/hr @ 75° F	0.95	Yellow	ASTM E84 25/50 for Flame and Smoke	1	9346K11	000000
2"	48"	10	7.7	Flexible	0 to 350	0.26 BTU/hr @ 75° F	0.95	Yellow	ASTM E84 25/50 for Flame and Smoke	1	9346K38	00000
2"	48"	60	7.7	Flexible	0 to 350	0.26 BTU/hr @ 75° F	0.95	Yellow	ASTM E84 25/50 for Flame and Smoke	2	9346K29	000000
3 1/2"	48"	10	13.5	Flexible	0 to 350	0.26 BTU/hr @ 75° F	0.95	Yellow	ASTM E84 25/50 for Flame and Smoke	1	9346K12	00000
3 1/2"	48"	72	13.5	Flexible	0 to 350	0.26 BTU/hr @ 75° F	0.95	Yellow	ASTM E84 25/50 for Flame and Smoke	1	9346K21	000000

For Enclosures and Equipment/Ovens and Furnaces

0° F to 1,000° F—Sheets with temperature range of 0° to 1,000° F are suitable for use in ovens. To use outdoors, add metal jacketing (sold separately).

Thk.	Wd.	Lg., ft.	Insulation R Value	Flexibility	Temp. Range, ° F	Heat Flow Rate @ Temp.	Density, lb/ft³	Color	Flammability Rating		Each
1"	24"	8	3.8	Flexible	0 to 1,000	0.26 BTU/hr @ 75° F	2.4	Gray	ASTM E84 25/50 for Flame and Smoke	9356K11	000000
1 1/2"	24"	8	5.8	Flexible	0 to 1,000	0.26 BTU/hr @ 75° F	2.4	Gray	ASTM E84 25/50 for Flame and Smoke	9356K12	00000
2"	24"	8	7.7	Flexible	0 to 1,000	0.26 BTU/hr @ 75° F	2.4	Gray	ASTM E84 25/50 for Flame and Smoke	9356K13	00000

Lightweight Melamine Insulation Sheets

The lowest-density insulation we offer, these sheets are made of lightweight melamine foam. To use outdoors, add metal jacketing or a coating.

0.44 lb/ft³ Density


Sheets with Kraft Paper Facing	Sheets Without Facing

Sheets with Kraft Paper Facing—Sheets with kraft paper facing have added impact resistance.

										Insulation Sheets		Sheets with Kraft Paper Facing
												Facing
	Wd.	Lg., ft.	Insulation R Value	Flexibility	Temp. Range, ° F	Heat Flow Rate @ Temp.	Color	Performance	Flammability Rating		Each	Temperature, ° F	Color		Each
1/2" Thick



		24"	4	1.9	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K21	000000	30 to 150	White	9249K21	000000


		24"	8	1.9	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K22	00000	30 to 150	White	9249K22	000000
		48"	8	1.9	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K23	000000	30 to 150	White	9249K23	000000


		1" Thick



				24"	4	3.7	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K24	00000	30 to 150	White	9249K24	00000


				24"	8	3.7	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K25	000000	30 to 150	White	9249K25	000000
				48"	8	3.7	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K26	000000	30 to 150	White	9249K26	000000


				2" Thick



						24"	4	7.4	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K27	000000	30 to 150	White	9249K27	000000


						24"	8	7.4	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K28	000000	—	—	———	0
						48"	8	7.4	Flexible	-40 to 350	0.27 BTU/hr @ 75° F	Gray	Lightweight	ASTM E84 25/50 for Flame and Smoke	86145K29	000000	30 to 150	White	9249K29	000000

Tape

		Each
Reinforced Insulation Tape	76755A67	000000

Polyurethane Foam Insulation Sheets with Perforated Facing

These flexible sheets are good for insulating large enclosures.

Vinyl Plastic Facing—The perforated vinyl plastic facing allows moisture to evaporate and resists cracking and fading.

											Plain Backing		Adhesive Backing
Thk.	Wd.	Insulation R Value	Flexibility	Temp. Range, ° F	Heat Flow Rate @ Temp.	Density, lb/ft³	Color	Flammability Rating	Facing Material	Choose a Length, ft.		Per Ft.		Per Ft.
1/2"	54"	1.7	Flexible	-20 to 200	0.3 BTU/hr @ 75° F	2	Black	FMVSS No. 302	Vinyl Plastic	1, 2, 4, 10	9385K21	000000	9385K61	000000
1"	54"	3.3	Flexible	-20 to 200	0.3 BTU/hr @ 75° F	2	Black	FMVSS No. 302	Vinyl Plastic	1, 2, 4, 10	9385K23	00000	9385K63	00000

Thermally Stable Composite Paper Insulation Sheets

Made of flexible composite paper, these sheets won't shrink or lose shape in the high temperatures of air furnaces and hot water tanks.

									5 ft. Long		10 ft. Long		20 ft. Long
Thk.	Wd.	Insulation R Value	Flexibility	Max. Temp., ° F	Heat Flow Rate @ Temp.	Density, lb/ft³	Color	Flammability Rating		Each		Each		Each
1/8"	16"	0.6	Flexible	1,100	0.22 BTU/hr @ 75° F	8.7	White	UL 94 V-0	9323K11	000000	9323K21	000000	9323K16	0000000
1/8"	24"	0.6	Flexible	1,100	0.22 BTU/hr @ 75° F	8.7	White	UL 94 V-0	9323K12	00000	9323K14	00000	9323K17	000000
1/8"	48"	0.6	Flexible	1,100	0.22 BTU/hr @ 75° F	8.7	White	UL 94 V-0	9323K13	000000	9323K15	000000	9323K18	000000

Rigid Mineral Wool Insulation Sheets


Sheet	Sheets with Wire Mesh	Sheets with Foil Facing

These durable sheets resist compression and are often used in oven and power-generating applications. To use outdoors, add metal jacketing.

Wire Mesh—Sheets with wire-mesh reinforcement withstand extreme shock and vibration.

Sheets with Foil Facing—Sheets with foil facing reflect heat. The foil facing is also known as foil scrim kraft (FSK).

Flame Resistant—Flame-resistant sheets meet ASTM E84 0/0 for flame and smoke.

	Wd.	Lg., ft.	Insulation R Value	Heat Flow Rate @ Temp.	Color	Flexibility	Performance	Flammability Rating	Max. Temp., ° F	Density, lb/ft³		Each
Insulation Sheets



	1"	24"	4	4.3	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K41	000000


	1 1/2"	24"	4	6.5	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K42	00000
	2"	24"	4	8.7	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K43	00000
	3"	24"	4	12.6	0.24 BTU/hr @ 75° F	Beige	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K44	00000
	4"	24"	4	16.8	0.24 BTU/hr @ 75° F	Beige	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K45	00000


	Sheets with Wire-Mesh Reinforcement on One Side



			1"	24"	4	4.3	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K21	00000


			1 1/2"	24"	4	6.5	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K22	00000
			2"	24"	4	8.7	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K23	00000
			3"	24"	4	12.5	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K516	00000
			4"	24"	4	16.5	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K518	00000


			Sheets with Wire-Mesh Reinforcement on Two Sides



					1"	24"	4	4.3	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K11	00000


					1 1/2"	24"	4	6.5	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K12	00000
					2"	24"	4	8.7	0.23 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K13	00000
					3"	24"	4	12.5	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K517	00000
					4"	24"	4	16.5	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K519	000000


					Sheets with Foil Facing



							1"	24"	4	4.3	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K511	00000


							1 1/2"	24"	4	6.5	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K512	00000
							2"	24"	4	8.7	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K513	00000
							3"	24"	4	12.5	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K514	00000
							4"	24"	4	16.5	0.24 BTU/hr @ 75° F	Green	Semi-Rigid	Flame Resistant	ASTM E84 0/0 for Flame and Smoke	1,200	8	9328K515	00000