Round-Cross-Section Buna-N Cord Stock

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82 Products

Oil-Resistant Buna-N O-Ring Cord Stock

This Buna-N cord stock resists hydraulic oils, motor oil, petroleum fluids, and synthetic lubricants. Use it to make round-profile O-rings, which are suitable for a wide range of static and dynamic sealing applications.

Inch Sizes

Wd.
Fractional	Actual	Hardness	Specifications Met	Temperature Range, °F	Color	Lengths, ft.		Per Ft.
1/16	0.07"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K21	00000
3/32	0.103"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K11	000
1/8	0.139"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K12	000
3/16	0.21"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K13	000
1/4	0.275"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K14	000
5/16	0.313"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K15	0000
3/8	0.375"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K16	0000
7/16	0.437"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K17	0000
1/2	0.5"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K22	0000
5/8	0.625"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K29	0000
3/4	0.75"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K23	0000
1	1"	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9407K24	0000

Metric Sizes

Wd., mm	Hardness	Specifications Met	Temperature Range, °F	Color	Lengths, ft.		Per Ft.
1.5	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K41	00000
1.6	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K11	000
1.9	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K42	000
2	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K12	000
2.4	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K13	000
2.5	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K43	000
3	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K14	000
3.5	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K15	000
4	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K16	000
4.5	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K17	000
5	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K18	000
5.7	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K19	000
6	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K21	000
6.5	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K22	000
7	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K23	0000
7.5	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K24	0000
8	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K25	0000
8.5	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K26	0000
9	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K27	0000
10	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K28	0000
11	Durometer 70A (Medium)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9679K31	0000

Oil-Resistant Soft Buna-N O-Ring Cord Stock

This cord stock is softer and creates a better seal than standard Buna-N cord stock. It resists hydraulic oils. Use it to make round-profile O-rings, which are suitable for a wide range of static and dynamic sealing applications.

Inch

Wd.
Fractional	Actual	Hardness	Specifications Met	Temperature Range, °F	Color	Lengths, ft.		Per Ft.
1/16	0.07"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K23	00000
3/32	0.103"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K25	000
1/8	0.139"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K27	0000
3/16	0.21"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K29	0000
1/4	0.275"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K31	0000
5/16	0.313"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K33	0000
3/8	0.375"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K35	0000
7/16	0.437"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K37	0000
1/2	0.5"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K39	0000
5/8	0.625"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K41	0000
3/4	0.75"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K43	0000
1	1"	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	9864K45	00000

Metric

Wd., mm	Hardness	Specifications Met	Temperature Range, °F	Color	Lengths, ft.		Per Ft.
1	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N1	00000
1.5	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N2	000
2	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N3	000
2.4	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N4	0000
2.5	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N5	000
3	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N6	0000
3.5	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N7	0000
4	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N8	0000
4.5	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N9	0000
5	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N11	0000
5.5	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N12	0000
6	Durometer 50A (Soft)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1209N13	0000

Oil-Resistant Hard Buna-N O-Ring Cord Stock

Harder than standard Buna-N cord stock for better wear resistance. It resists hydraulic oils, motor oil, petroleum fluids, and ethylene glycol. Use it to make round-profile O-rings, which are suitable for a wide range of static and dynamic sealing applications.

Inch

Wd.
Fractional	Actual	Hardness	Specifications Met	Temperature Range, °F	Color	Lengths, ft.		Per Ft.
1/8	0.139"	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1240N1	00000
3/16	0.21"	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1240N2	0000
1/4	0.275"	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1240N3	0000

Metric

Wd., mm	Hardness	Specifications Met	Temperature Range, °F	Color	Lengths, ft.		Per Ft.
2	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N11	00000
2.5	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N12	000
3	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N13	000
3.5	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N14	0000
4	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N15	0000
4.5	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N16	000
5	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N17	0000
5.5	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N18	0000
6	Durometer 90A (Hard)	ASTM D2000	-25° to 212°	Black	3, 10, 20, 50, 100	1212N19	0000

Oil-Resistant Food Industry Buna-N O-Ring Cord Stock

Made of FDA-listed material for use with food and beverage, this Buna-N cord stock resists animal and vegetable oils, citric acid, sodium bicarbonate, and grease. Use it to make round-profile O-rings, which are suitable for a wide range of static and dynamic sealing applications.

Wd.
Fractional	Actual	Hardness	Specifications Met	Temperature Range, °F	Color	Lengths, ft.		Per Ft.
1/16	0.07"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T11	00000
3/32	0.103"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T13	0000
1/8	0.139"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T15	0000
3/16	0.21"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T17	0000
1/4	0.275"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T18	0000
5/16	0.313"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T19	0000
3/8	0.375"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T21	0000
7/16	0.437"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T23	0000
1/2	0.5"	Durometer 70A (Medium)	ASTM D2000, FDA Compliant 21 CFR 177.2600	-25° to 212°	White	3, 10, 20, 50, 100	3286T25	0000

O-Ring Bonding Kits

These kits include everything you need to make your own O-rings, including cord stock, a splicing jig, adhesive, and a razor blade.

Buna-N cord stock resists oil and grease.

Relacement jigs splice cord stock from 0.103” to 0.375” Wd.

Material	Wd.	Hardness	Temperature Range, °F	Color	Lg., ft.		Each
Buna-N Rubber	0.103", 0.139", 0.21", 0.275"	Durometer 70A (Medium)	-40° to 212°	Black	7	9694K21	000000
Buna-N Rubber	1.5mm, 0.07", 2mm, 2.5mm, 0.103", 3mm, 3.5mm, 0.139", 4mm, 5mm, 0.21", 5.7mm, 0.275", 8.4mm	Durometer 70A (Medium)	-40° to 212°	Black	3	9410K11	00000
Buna-N Rubber	1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 5mm, 5.7mm, 8.4mm	Durometer 70A (Medium)	-40° to 212°	Black	3	9693K1	00000

4" Lg. × 5/8" Wd. Replacement Jig for 0.103" to 0.375" Wd. Cord Stock

9462K2

Each

00000