Buna-N Rubber Rounds | McMaster-Carr

	Diameter Diameter

1/8"

3/16"

7/32"

	Length Length

36"

	Shape Shape


Rod and Disc	Round Tube

Ball

	Durometer Durometer

	Hardness Rating Hardness Rating

Medium

Medium Hard

Hard

	ID ID

	OD OD

	Tensile Strength Tensile Strength

1,200 psi

1,800 psi

	Minimum Temperature Minimum Temperature

-40° F

-20° F

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

REACH Compliant

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

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

	Maximum Temperature Maximum Temperature

212° F

220° F

225° F

	Specifications Met Specifications Met

ASTM D2000 BG

ASTM D2000 BF

	Wall Thickness Wall Thickness

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About Rubber

Color: Black
Temperature Range: -20° to 220° F
Tensile Strength: 1,200 psi
For Use Outdoors: No

Seal and cushion narrow spaces, such as inside channels and seams. Buna-N is also known as nitrile, NBR, and acrylonitrile butadiene. It resists fuel oil, hydraulic oil, ethylene glycol, and grease.

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

			6" Lg.		36" Lg.
Dia.	Dia. Tolerance	Choose a Durometer		Each		Each
1/8"	-0.027" to +0.027"	50A (Medium), 60A (Medium Hard), 70A (Hard)	000000	00	0000000	000000
1/4"	-0.039" to +0.039"	50A (Medium), 60A (Medium Hard), 70A (Hard)	000000	00	0000000	00000
3/8"	-0.039" to +0.039"	50A (Medium), 60A (Medium Hard), 70A (Hard)	000000	00	0000000	00000
1/2"	-0.051" to +0.051"	50A (Medium), 60A (Medium Hard), 70A (Hard)	000000	00	0000000	00000
3/4"	-0.063" to +0.063"	75A (Hard)	00000000	000000	00000000	00000
1"	-0.079" to +0.079"	75A (Hard)	00000000	00000	00000000	00000
1 1/4"	-0.079" to +0.079"	75A (Hard)	00000000	00000	00000000	00000
1 3/8"	-0.079" to +0.079"	75A (Hard)	00000000	00000	00000000	00000
1 1/2"	-0.079" to +0.079"	75A (Hard)	00000000	00000	00000000	000000
1 3/4"	-0.098" to +0.098"	75A (Hard)	00000000	00000	00000000	000000
2"	-0.098" to +0.098"	75A (Hard)	00000000	00000	00000000	000000
2 1/4"	-0.098" to +0.098"	75A (Hard)	00000000	00000	00000000	000000
2 1/2"	-0.126" to +0.126"	75A (Hard)	00000000	000000	00000000	000000
3"	-0.126" to +0.126"	75A (Hard)	00000000	000000	00000000	000000
3 1/2"	-0.126" to +0.126"	75A (Hard)	00000000	000000	00000000	000000
4"	-0.126" to +0.126"	75A (Hard)	00000000	000000	00000000	000000

Oil-Resistant Buna-N Rubber Tubes

Applications for these tubes include jackets, seals, and insulation. Buna-N is also known as nitrile, NBR, and acrylonitrile butadiene. It resists fuel oil, hydraulic oil, ethylene glycol, and grease.

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

Round Tubes

Color: Black
Temperature Range: -20° to 225° F
Tensile Strength: 1,200 psi
For Use Outdoors: No

				6" Lg.		36" Lg.
OD	ID	Wall Thick.	Durometer		Each		Each
3/4"	1/4"	1/4"	75A (Hard)	00000000	00000	00000000	000000
1"	1/4"	3/8"	75A (Hard)	00000000	00000	00000000	00000
1"	3/8"	5/16"	75A (Hard)	00000000	00000	00000000	00000
1"	5/8"	3/16"	75A (Hard)	00000000	0000	00000000	00000
1 1/4"	1/2"	3/8"	75A (Hard)	00000000	00000	00000000	00000
1 1/4"	5/8"	5/16"	75A (Hard)	00000000	00000	00000000	00000
1 3/8"	1/2"	7/16"	75A (Hard)	00000000	00000	00000000	00000
1 1/2"	3/8"	9/16"	75A (Hard)	00000000	00000	00000000	000000
1 1/2"	7/8"	5/16"	75A (Hard)	00000000	00000	00000000	00000
2"	3/8"	13/16"	75A (Hard)	00000000	00000	00000000	000000
2 1/2"	3/4"	7/8"	75A (Hard)	00000000	00000	00000000	000000
3"	1"	1"	75A (Hard)	00000000	00000	00000000	000000

Oil-Resistant Buna-N Rubber Balls

Color: Black
Temperature Range: -40° to 212° F
Tensile Strength: 1,800 psi
For Use Outdoors: No

Use these balls as seals in pumps and check valves or let them bounce inside of vibrating sifters for an effective screen cleaner. Buna-N is also known as nitrile, NBR, and acrylonitrile butadiene. It offers good resistance to petroleum-based oils.

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

Dia.	Dia. Tolerance	Durometer	Specifications Met		Each
1/8"	-0.005" to +0.005"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	00000
3/16"	-0.003" to +0.003"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000
7/32"	-0.005" to +0.005"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000
1/4"	-0.003" to +0.003"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000
5/16"	-0.003" to +0.003"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000
3/8"	-0.003" to +0.003"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000
7/16"	-0.004" to +0.004"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000
1/2"	-0.004" to +0.004"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000
5/8"	-0.004" to +0.004"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000
3/4"	-0.004" to +0.004"	70A (Hard)	ASTM D2000 BF, ASTM D2000 BG	0000000	0000

About Rubber

Oil-Resistant Buna-N Rubber Rods

Oil-Resistant Buna-N Rubber Tubes

Oil-Resistant Buna-N Rubber Balls