Backup O-Rings

Backup Buna-N 90 O-Rings w/ 3/32" Wall

O-RING BACKUP WASHERS provide supplemental support for O-Ring seals in high pressure applications, such as hydraulic cylinders and valves. Designed to prevent O-RING EXTRUSION, these Buna-N 90 washers ensure O-Rings do not flow into sealing gaps under pressure. Must be used only in approved systems to avoid equipment failure.

Industry Number	Inside Diameter	Outside Diameter	Material	Durometer	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
110	3/8"	9/16"	Nitrile	90	20	511710	Log in to view price
3/8" x 3/32" x 9/16" Backup Buna-N 90 O-Ring (#110) - 20 Pack Item Number: 511710 Package Weight: 0.1 lbs View Product Details Log in to Order
111	7/16"	5/8"	Nitrile	90	20	511711	Log in to view price
7/16" x 3/32" x 5/8" Backup Buna-N 90 O-Ring (#111) - 20 Pack Item Number: 511711 Package Weight: 0.1 lbs View Product Details Log in to Order
112	1/2"	11/16"	Nitrile	90	20	511712	Log in to view price
1/2" x 3/32" x 11/16" Backup Buna-N 90 O-Ring (#112) - 20 Pack Item Number: 511712 Package Weight: 0.1 lbs View Product Details Log in to Order
113	9/16"	3/4"	Nitrile	90	20	511713	Log in to view price
9/16" x 3/32" x 3/4" Backup Buna-N 90 O-Ring (#113) - 20 Pack Item Number: 511713 Package Weight: 0.1 lbs View Product Details Log in to Order
114	5/8"	13/16"	Nitrile	90	20	511714	Log in to view price
5/8" x 3/32" x 13/16" Backup Buna-N 90 O-Ring (#114) - 20 Pack Item Number: 511714 Package Weight: 0.1 lbs View Product Details Log in to Order
115	11/16"	7/8"	Nitrile	90	20	511715	Log in to view price
11/16" x 3/32" x 7/8" Backup Buna-N 90 O-Ring (#115) - 20 Pack Item Number: 511715 Package Weight: 0.1 lbs View Product Details Log in to Order
116	3/4"	15/16"	Nitrile	90	20	511716	Log in to view price
3/4" x 3/32" x 15/16" Backup Buna-N 90 O-Ring (#116) - 20 Pack Item Number: 511716 Package Weight: 0.1 lbs View Product Details Log in to Order
117	13/16"	1"	Nitrile	90	20	511717	Log in to view price
13/16" x 3/32" x 1" Backup Buna-N 90 O-Ring (#117) - 20 Pack Item Number: 511717 Package Weight: 0.1 lbs View Product Details Log in to Order
118	7/8"	1-1/16"	Nitrile	90	20	511718	Log in to view price
7/8" x 3/32" x 1-1/16" Backup Buna-N 90 O-Ring (#118) - 20 Pack Item Number: 511718 Package Weight: 0.1 lbs View Product Details Log in to Order
119	15/16"	1-1/8"	Nitrile	90	20	511719	Log in to view price
15/16" x 3/32" x 1-1/8" Backup Buna-N 90 O-Ring (#119) - 20 Pack Item Number: 511719 Package Weight: 0.1 lbs View Product Details Log in to Order
120	1"	1-3/16"	Nitrile	90	20	511720	Log in to view price
1" x 3/32" x 1-3/16" Backup Buna-N 90 O-Ring(#120) - 20 Pack Item Number: 511720 Package Weight: 0.1 lbs View Product Details Log in to Order
121	1-1/16"	1-1/4"	Nitrile	90	20	511721	Log in to view price
1-1/16" x 3/32" x 1-1/4" Backup Buna-N 90 O-Ring (#121) - 20 Pack Item Number: 511721 Package Weight: 0.1 lbs View Product Details Log in to Order

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Backup Buna-N 90 O-Rings w/ 1/8" Wall

Industry Number	Inside Diameter	Outside Diameter	Material	Durometer	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
210	3/4"	1"	Nitrile	90	20	511810	Log in to view price
3/4" x 1/8" x 1" Backup Buna-N 90 O-Ring (#210) - 20 Pack Item Number: 511810 Package Weight: 0.3 lbs View Product Details Log in to Order
211	13/16"	1-1/16"	Nitrile	90	20	511811	Log in to view price
13/16" x 1/8" x 1-1/16" Backup Buna-N 90 O-Ring (#211) - 20 Pack Item Number: 511811 Package Weight: 0.1 lbs View Product Details Log in to Order
212	7/8"	1-1/8"	Nitrile	90	20	511812	Log in to view price
7/8" x 1/8" x 1-1/8" Backup Buna-N 90 O-Ring (#212) - 20 Pack Item Number: 511812 Package Weight: 0.1 lbs View Product Details Log in to Order
213	15/16"	1-3/16"	Nitrile	90	20	511813	Log in to view price
15/16" x 1/8" x 1-3/16" Backup Buna-N 90 O-Ring (#213) - 20 Pack Item Number: 511813 Package Weight: 0.1 lbs View Product Details Log in to Order
214	1"	1-1/4"	Nitrile	90	20	511814	Log in to view price
1" x 8" x 1-1/4" Backup Buna-N 90 O-Ring (#214) - 20 Pack Item Number: 511814 Package Weight: 0.1 lbs View Product Details Log in to Order
215	1-1/16"	1-5/16"	Nitrile	90	10	511815	Log in to view price
1-1/16" x 1/8" x 1-5/16" Backup Buna-N 90 O-Ring (#215) - 10 Pack Item Number: 511815 Package Weight: 0.1 lbs View Product Details Log in to Order
216	1-1/8"	1-3/8"	Nitrile	90	10	511816	Log in to view price
1-1/8" x 1/8" x 1-3/8" Backup Buna-N 90 O-Ring (#216) - 10 Pack Item Number: 511816 Package Weight: 0.1 lbs View Product Details Log in to Order
217	1-3/16"	1-7/16"	Nitrile	90	10	511817	Log in to view price
1-3/16" x 1/8" x 1-7/16" Backup Buna-N 90 O-Ring (#217) - 10 Pack Item Number: 511817 Package Weight: 0.1 lbs View Product Details Log in to Order
218	1-1/4"	1-1/2"	Nitrile	90	10	511818	Log in to view price
1-1/4" x 1/8" x 1-1/2" Backup Buna-N 90 O-Ring (#218) - 10 Pack Item Number: 511818 Package Weight: 0.1 lbs View Product Details Log in to Order
219	1-5/16"	1-9/16"	Nitrile	90	10	511819	Log in to view price
1-5/16" x 1/8" x 1-9/16" Backup Buna-N 90 O-Ring (#219) - 10 Pack Item Number: 511819 Package Weight: 0.1 lbs View Product Details Log in to Order
220	1-3/8"	1-5/8"	Nitrile	90	10	511820	Log in to view price
1-3/8" x 1/8" x 1-5/8" Backup Buna-N 90 O-Ring (#220) - 10 Pack Item Number: 511820 Package Weight: 0.1 lbs View Product Details Log in to Order
222	1-7/16"	1-11/16"	Nitrile	90	10	511822	Log in to view price
1-1/2" x 1/8" x 1-3/4" Backup Buna-N 90 O-Ring (#222) - 10 Pack Item Number: 511822 Package Weight: 0.1 lbs View Product Details Log in to Order

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Backup Buna-N 90 O-Rings w/ 3/16" Wall

Industry Number	Inside Diameter	Outside Diameter	Material	Durometer	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
325	1-1/2"	1-7/8"	Nitrile	90	10	511925	Log in to view price
1-1/2" x 3/16" x 1-7/8" Backup Buna-N 90 O-Ring (#325) - 10 Pack Item Number: 511925 Package Weight: 0.1 lbs View Product Details Log in to Order
326	1-5/8"	2"	Nitrile	90	10	511926	Log in to view price
1-5/8" x 3/16" x 2" Backup Buna-N 90 O-Ring (#326) - 10 Pack Item Number: 511926 Package Weight: 0.1 lbs View Product Details Log in to Order
327	1-3/4"	2-1/8"	Nitrile	90	10	511927	Log in to view price
1-3/4" x 3/16" x 2-1/8" Backup Buna-N 90 O-Ring (#327) - 10 Pack Item Number: 511927 Package Weight: 0.1 lbs View Product Details Log in to Order
328	1-7/8"	2-1/4"	Nitrile	90	6	511928	Log in to view price
1-7/8" x 3/16" x 2-1/4" Backup Buna-N 90 O-Ring (#328) - 6 Pack Item Number: 511928 Package Weight: 0.1 lbs View Product Details Log in to Order
329	2"	2-3/8"	Nitrile	90	6	511929	Log in to view price
2" x 3/16" x 2-3/8" Backup Buna-N 90 O-Ring (#329) - 6 Pack Item Number: 511929 Package Weight: 0.1 lbs View Product Details Log in to Order
330	2-1/8"	2-1/2"	Nitrile	90	6	511930	Log in to view price
2-1/8" x 3/16" x 2-1/2" Backup Buna-N 90 O-Ring (#330) - 6 Pack Item Number: 511930 Package Weight: 0.1 lbs View Product Details Log in to Order
331	2-1/4"	2-5/8"	Nitrile	90	6	511931	Log in to view price
2-1/4" x 3/16" x 2-5/8" Backup Buna-N 90 O-Ring (#331) - 6 Pack Item Number: 511931 Package Weight: 0.1 lbs View Product Details Log in to Order
332	2-3/8"	2-3/4"	Nitrile	90	6	511932	Log in to view price
2-3/8" x 3/16" x 2-3/4" Backup Buna-N 90 O-Ring (#332) - 6 Pack Item Number: 511932 Package Weight: 0.1 lbs View Product Details Log in to Order
333	2-1/2"	2-7/8"	Nitrile	90	6	511933	Log in to view price
2-1/2" x 3/16" x 2-7/8" Backup Buna-N 90 O-Ring (#333) - 6 Pack Item Number: 511933 Package Weight: 0.1 lbs View Product Details Log in to Order
334	2-5/8"	3"	Nitrile	90	6	511934	Log in to view price
2-5/8" x 3/16" x 3" Backup Buna-N 90 O-Ring (#334) - 6 Pack Item Number: 511934 Package Weight: 0.1 lbs View Product Details Log in to Order
335	2-3/4"	3-1/8"	Nitrile	90	6	511935	Log in to view price
2-3/4" x 3/16" x 3-1/8" Backup Buna-N 90 O-Ring (#335) - 6 Pack Item Number: 511935 Package Weight: 0.1 lbs View Product Details Log in to Order
336	2-7/8"	3-1/4"	Nitrile	90	6	511936	Log in to view price
2-7/8" x 3/16" x 3-1/4" Backup Buna-N 90 O-Ring (#336) - 6 Pack Item Number: 511936 Package Weight: 0.1 lbs View Product Details Log in to Order