Buna-N Foam Bars | McMaster-Carr

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	Material Material

Neoprene/Vinyl/Buna-N Foam

Viton® Fluoroelastomer
Foam

	System of Measurement System of Measurement

Inch

	Thickness Thickness

	Width Width

	Length Length

	Backing Type Backing Type


Plain	Adhesive

	Cell Type Cell Type

	Closed

	Color Color

	Black

	Texture Texture


Coarse	Smooth

	Hardness Rating Hardness Rating

Ultra Soft

Extra Soft

Soft

	Oil-Resistance Rating Oil-Resistance Rating

Good

Excellent

	For Use Outdoors For Use Outdoors

Yes

	Flexibility Flexibility

	Flexible

	Pressure to Compress 25% Pressure to Compress 25%

Less than 5 psi

5 to 9.9 psi

10 to 14.9 psi

	Density Density

	Shape Shape

	Sheet and Bar

	Maximum Temperature Maximum Temperature

Less than 1,000° F

	Minimum Temperature Minimum Temperature

-40° F

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

RoHS Compliant

	Specifications Met Specifications Met

ASTM

FMVSS

UL 94

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

REACH Compliant

	Material Surface Material Surface

Without Skin

	Minimum Adhesive Temperature Minimum Adhesive Temperature

-40° F

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141 Products

About Foam

Includes a total of 12 sheets: one of each material listed in the table.

For technical drawings and 3-D models, click on a part number.

		4" × 4"
Material	Thick.		Pkg.
Buna-N Foam, EPDM Foam, EVA Foam, Ionomer Foam, Natural Gum Foam, Neoprene Foam, Polyethylene Foam, Polyimide Foam, Polyurethane Foam, Silicone Foam, Vinyl Foam, Viton® Fluoroelastomer Foam	1/8" to 1/2"	0000000	000000

Oil-Resistant Blended Buna-N Foam Strips

Made from a blend of Buna-N, neoprene, and vinyl, these foam strips have good resistance to oil. Foam has closed-cell construction, which restricts water, air, and gases from being absorbed.

For technical drawings and 3-D models, click on a part number.

Adhesive-Back Strips with Smooth Texture

Color: Black
Temperature Range: -40° to 200° F
Cell Type: Closed
For Use Outdoors: Yes
Density: Ultra Soft: 4 lbs./cu. ft.; Soft: 8 lbs./cu. ft.
Pressure to Compress 25%: Ultra Soft: 3 psi; Soft: 11 psi
Tensile Strength Rating: Ultra Soft: Fair; Soft: Good
Oil-Resistance Rating: Ultra Soft: Good; Soft: Excellent

			Adhesive
Thickness	Thickness Tolerance	Length, ft.	Type	Temperature Range, °F		Each
Ultra Soft
1/4" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	000000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	00000
3/4" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	00000
1" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	00000
2" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	000000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	000000
Soft
1/8" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	0000
3/32"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/4" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
3/32"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
3/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
3/32"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
3/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
5/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
3/32"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
3/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
5/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
7/16"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	00000
5/8" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
3/32"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
3/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
5/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
7/16"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	00000
5/8"	-0.050" to +0.050"	3	Acrylic	-40° to 250°	00000000	00000
3/4" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
3/32"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
3/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
5/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
7/16"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	00000
5/8"	-0.050" to +0.050"	3	Acrylic	-40° to 250°	00000000	00000
3/4"	-0.065" to +0.065"	3	Acrylic	-40° to 250°	00000000	00000
1" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
3/32"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
3/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
5/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
7/16"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	00000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	000000
5/8"	-0.050" to +0.050"	3	Acrylic	-40° to 250°	00000000	00000
3/4"	-0.065" to +0.065"	3	Acrylic	-40° to 250°	00000000	00000
1"	-0.082" to +0.082"	3	Acrylic	-40° to 250°	00000000	00000
2" Width
1/16"	-0.015" to +0.015"	10	Acrylic	-40° to 250°	00000000	00000
3/32"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
1/8"	-0.020" to +0.020"	10	Acrylic	-40° to 250°	00000000	00000
3/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	00000
1/4"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	000000
5/16"	-0.025" to +0.025"	10	Acrylic	-40° to 250°	00000000	000000
3/8"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	000000
7/16"	-0.035" to +0.035"	10	Acrylic	-40° to 250°	00000000	000000
1/2"	-0.040" to +0.040"	10	Acrylic	-40° to 250°	00000000	000000
5/8"	-0.050" to +0.050"	3	Acrylic	-40° to 250°	00000000	00000
3/4"	-0.065" to +0.065"	3	Acrylic	-40° to 250°	00000000	00000
1"	-0.082" to +0.082"	3	Acrylic	-40° to 250°	00000000	000000

Oil-Resistant Buna-N Foam Sheets

Color: Black
Temperature Range: -40° to 200° F
Cell Type: Closed
For Use Outdoors: Yes
Density: 14 lbs./cu. ft.
Pressure to Compress 25%: 4 psi (Ultra Soft)
Tensile Strength Rating: Good
Oil-Resistance Rating: Excellent

Made of Buna-N foam, these sheets offer excellent oil resistance. They also resist fuel and solvents. Buna-N is also known as nitrile, NBR, and acrylonitrile butadiene. Foam has closed-cell construction, which restricts water, air, and gases from being absorbed.

For technical drawings and 3-D models, click on a part number.

		40" × 68"
Thick.	Thick. Tolerance		Each
1/16"	-0.030" to 0.030"	0000000	000000
1/8"	-0.030" to 0.030"	0000000	000000
1/4"	-0.030" to 0.030"	0000000	000000
3/8"	-0.045" to 0.045"	0000000	000000
1/2"	-0.045" to 0.045"	0000000	000000
5/8"	-0.060" to 0.060"	0000000	000000
3/4"	-0.060" to 0.060"	0000000	000000
1"	-0.090" to 0.090"	0000000	000000

Flame-Retardant Oil-Resistant Blended Buna-N Foam Sheets and Strips

This foam meets UL fire extinguishing specifications. It's made from a blend of Buna-N, neoprene, and vinyl to offer good resistance to oil. This foam has closed-cell construction, which restricts water, air, and gases from being absorbed.

Sheets with Smooth Texture

Color: Black
Temperature Range: -40° to 200° F
Cell Type: Closed
For Use Outdoors: Yes
Density: Ultra Soft: 5 lbs./cu. ft.; Extra Soft: 7 lbs./cu. ft.; Soft: 8 lbs./cu. ft.
Pressure to Compress 25%: Ultra Soft: 4 psi; Extra Soft: 7 psi; Soft: 11 psi
Tensile Strength Rating: Ultra Soft: Fair; Extra Soft and Soft: Good
Oil-Resistance Rating: Good

			54" Wd.
Thick.	Thickness Tolerance	Lengths, ft.		Per Ft.
Ultra Soft
1/8"	-0.032" to 0.032"	1, 2, 3, 5	00000000	000000
3/16"	-0.032" to 0.032"	1, 2, 3, 5	00000000	00000
1/4"	-0.032" to 0.032"	1, 2, 3, 5	00000000	00000
3/8"	-0.040" to 0.040"	1, 2, 3, 5	00000000	00000
1/2"	-0.040" to 0.040"	1, 2, 3, 5	00000000	00000
3/4"	-0.063" to 0.063"	1, 2, 3, 5	00000000	00000
1"	-0.063" to 0.063"	1, 2, 3, 5	00000000	00000
Extra Soft
1/8"	-0.032" to 0.032"	1, 2, 3, 5	00000000	00000
3/16"	-0.032" to 0.032"	1, 2, 3, 5	00000000	00000
1/4"	-0.032" to 0.032"	1, 2, 3, 5	00000000	00000
3/8"	-0.040" to 0.040"	1, 2, 3, 5	00000000	00000
1/2"	-0.040" to 0.040"	1, 2, 3, 5	00000000	00000
3/4"	-0.063" to 0.063"	1, 2, 3, 5	00000000	00000
1"	-0.063" to 0.063"	1, 2, 3, 5	00000000	00000
Soft
1/8"	-0.032" to 0.032"	1, 2, 3, 5	00000000	00000
3/16"	-0.032" to 0.032"	1, 2, 3, 5	00000000	00000
1/4"	-0.032" to 0.032"	1, 2, 3, 5	00000000	00000
3/8"	-0.040" to 0.040"	1, 2, 3, 5	00000000	00000
1/2"	-0.040" to 0.040"	1, 2, 3, 5	00000000	00000
3/4"	-0.063" to 0.063"	1, 2, 3, 5	00000000	00000
1"	-0.063" to 0.063"	1, 2, 3, 5	00000000	00000

Adhesive-Back Strips with Coarse Texture

Color: Black
Temperature Range: -40° to 200° F
Cell Type: Closed
For Use Outdoors: Yes
Density: 5 lbs./cu. ft.
Pressure to Compress 25%: 4 psi (Ultra Soft)
Tensile Strength Rating: Fair
Oil-Resistance Rating: Good

		Adhesive
Thick.	Thick. Tolerance	Type	Temperature Range, °F		Each
3/8" × 50 ft.
1/8"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
3/16"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	0000
1/4"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
1/2" × 50 ft.
1/8"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
3/16"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
1/4"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
3/4" × 50 ft.
1/8"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
3/16"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
1/4"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
1" × 50 ft.
1/8"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
3/16"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
1/4"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
2" × 50 ft.
1/8"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
3/16"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000
1/4"	-0.032" to 0.032"	Acrylic	-40° to 200°	00000000	00000

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About Foam

Foam Material Sample Packs

Oil-Resistant Blended Buna-N Foam Strips

Oil-Resistant Buna-N Foam Sheets

Flame-Retardant Oil-Resistant Blended Buna-N Foam Sheets and Strips