Nitrile Rubber | McMaster-Carr

001
002
003
004
005
006
007
008
009
010
011
012
013
014
015
016
017
018
019
020
021
022
024
025
026
027
028
029
030
031
032
035
036
037
038
039
040
041
042
043
047
049
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
141
142
145
146
148
150
151
152
153
154
155
156
157
158
159
160
163
164
168
201
202
203
204
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
252
254
255
256
257
258
259
260
261
262
264
265
266
267
268
274
279
309
310
313
314
318
319
320
321
322
323
325
326
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
349
351
352
353
356
357
358
363
372
373
375
377
389
425
426
427
429
432
433
435
437
438
439
440
442
443
446
447
450
451
452
453
454
466
901
902
903
904
905
906
907
908
909
910
911
912
913
914
916
918
920
924
928
932

	Tensile Strength Tensile Strength

Less than 100 psi

100 to 999 psi

1,000 to 1,499 psi

1,500 psi or greater

View catalog pages (39)

Forward

How can we improve?

3,372 Products

About O-Rings

Oil-Resistant Buna-N Rubber Sheets, Bars, and Strips

Buna-N rubber resists fuel oil, hydraulic oil, ethylene glycol, and grease.

High-Strength Oil-Resistant
Buna-N Rubber Sheets and Strips

These sheets and strips offer better shock-absorbing qualities and longer life than standard Oil-Resistant Buna-N.

Food Industry Oil-Resistant
Buna-N Rubber Sheets and Strips

Made from FDA-compliant materials for use with food and beverage, these sheets and strips won’t degrade from animal and vegetable oils.

Oil-Resistant High-Temperature Buna-N Rubber Sheets

Because these sheets and strips are made from peroxide-cured Buna-N rubber, they have better heat resistance than standard Oil-Resistant Buna-N rubber sheets and strips.

Food Industry Ultra-Strength Oil-Resistant
Buna-N/Vinyl Rubber Sheets

The addition of vinyl make these sheets the strongest Food Industry Oil-Resistant rubber we offer. Use them for high-tension applications, such as belting. They’re made from FDA-listed materials for use with food and offer good resistance to animal and vegetable oils.

Ultra-Strength Oil-Resistant
Buna-N Rubber Sheets and Strips

With the greatest tensile strength of all our oil-resistant rubber, these super-strong Buna-N sheets and strips can handle high-tension applications, such as belting.

Food Industry High-Strength Oil-Resistant
Buna-N Rubber Sheets and Strips

Greater tensile strength than standard Food-Grade Oil-Resistant Buna-N rubber gives these sheets and strips better shock-absorbing qualities and longer life. They’re made from FDA-listed materials for use with food and beverage and offer good resistance to animal and vegetable oils.

Fabric-Reinforced Oil-Resistant Buna-N Rubber Sheets

To maintain their size and shape under heavy compression, these sheets have one layer of nylon fabric for every 1/16” of thickness. Use them as flange gaskets and diaphragm packing.

Oil-Resistant Buna-N Rubber Rods

Seal and cushion narrow spaces, such as inside channels and seams.

Oil-Resistant Buna-N Rubber Tubes

Applications for these tubes include jackets, seals, and insulation.

Oil-Resistant Buna-N Rubber Balls

Use these balls as seals in pumps and check valves or let them bounce inside of vibrating sifters for an effective screen cleaner.

Oil-Resistant Buna-N O-Rings

Made of Buna-N, these O-rings resist grease, hydraulic oil, and motor oil—plus mild chemicals and water.

Oil-Resistant Hard Buna-N O-Rings for Tube
Fittings with Straight-Thread Connection

Also known as Boss O-rings, these hard O-rings are for use in tube fittings with a straight-thread connection.

Oil-Resistant Hard Buna-N O-Rings

These hard O-rings offer better wear resistance than standard Buna-N O-rings.

Made-to-Order Oil-Resistant Buna-N O-Rings

When you need an O-ring that’s not an industry standard size, we can make one to fit your requirements. These resist grease, hydraulic oils, and motor oil.

Oil-Resistant Soft Buna-N O-Rings

Softer than standard Buna-N O-rings for a better seal in low-pressure applications.

Square-Profile Oil-Resistant Buna-N O-Rings

With flat edges on all four sides, square-profile O-rings cover more surface than round-profile O-rings for a better seal in static applications, such as hose, pipe, and faucet connections.

X-Profile Oil-Resistant Buna-N O-Rings

Also known as Quattro Seals and X-rings, these X-profile O-rings have four points of contact for a better seal in dynamic applications than round-profile O-rings. They also require less compression to make a seal, so they offer a longer service life.

Double X-Profile Oil-Resistant Buna-N O-Rings

These O-rings have eight points of contact for a better seal in dynamic applications than X-profile O-rings, plus they have eight grooves that hold lubricant to reduce friction and wear for a longer service life.

Oil-Resistant Mil. Spec. Buna-N O-Rings

Choose these O-rings for their adherence to strict military standards for material and construction.

Oil-Resistant Clean Room Buna-N O-Rings

These Buna-N O-rings are made and bagged in an ISO Class 7 (Fed. Std. 10,000) clean room.

Oil-Resistant Food Industry Buna-N O-Rings

These Buna-N O-rings are made of FDA-listed material for use with food and beverage.

Oil-Resistant Metal-Detectable Buna-N O-Rings

If these O-rings deteriorate, they can be picked up by metal detection systems.

Oil-Resistant O-Ring Cord Stock

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

This cord stock is softer and creates a better seal in low-pressure applications than standard Buna-N cord stock.

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

Harder than standard Buna-N cord stock for better wear resistance.

Oil-Resistant Buna-N O-Ring Cord Stock

Square-Profile Oil-Resistant Buna-N O-Ring Cord Stock

This square-profile cord stock has flat edges on all four sides, which creates a better seal than round profile in static applications, such as hose, pipe, and faucet connections.

X-Profile Oil-Resistant Buna-N O-Ring Cord Stock

The X shape of this cord stock provides four points of contact for a better seal in dynamic applications than round profile. It also requires less compression to make a seal, so it offers a longer service life.

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

Made of FDA-listed material for use with food and beverage, this cord stock resists animal and vegetable oils, citric acid, sodium bicarbonate, and grease.

Oil-Resistant Buna-N Backup Rings

Made of Buna-N, these backup rings resist grease, petroleum fluids, and motor oil.

O-Ring Assortments

Square-Profile Oil-Resistant
Buna-N O-Ring Assortments

These O-rings have a square profile with flat edges on all four sides. They cover more surface than round-profile O-rings for a better seal in static applications, such as hose, pipe, and faucet connections.

Oil-Resistant Soft Buna-N O-Ring Assortments

Softer than standard Buna-N O-rings for a better seal in low-pressure applications.

Oil-Resistant Hard Buna-N O-Ring Assortments
for Tube Fittings with Straight-Thread Connection

Also known as Boss O-rings, these hard O-rings are for use in tube fittings with a straight-thread connection.

Oil-Resistant Hard Buna-N O-Ring Assortments

These O-rings are harder than standard Buna-N O-rings for better resistance to wear.

Oil-Resistant Buna-N O-Ring Assortments

All of the O-rings in these assortments are made of Buna-N. They resist animal, vegetable, and motor oils.

X-Profile Oil-Resistant Buna-N O-Ring Assortments

Oil- and Chemical-Resistant O-Ring Assortments

These assortments contain a mix of Buna-N O-rings that resist oil and Viton® fluoroelastomer O-rings that resist boric acid, fuels, and transmission fluid.

O-Ring Bonding Kits

These kits include everything you need to make your own Buna-N, Viton® fluoroelastomer, or EPDM O-rings.

Gaskets

Oil-Resistant Food Industry
Compressible Buna-N Gasket Material

Made of FDA-listed material for use with food and beverage.

Oil-Resistant Light Duty Cork/Buna-N Gasket Material

Commonly used in low-pressure applications, cork is blended with Buna-N rubber for a flexible, oil-resistant gasket material.

Oil-Resistant Aramid/Buna-N Gasket Material

Made from a blend of aramid fiber and Buna-N rubber.

Oil-Resistant Compressible Buna-N Pipe Gaskets

These compressible Buna-N rubber gaskets ensure a tight seal. They also resist water and salts.

Oil-Resistant Aramid/Buna-N
Pipe Gaskets with Fasteners

Furnished with enough nuts and bolts to create a connection between two steel pipe flanges.

Oil-Resistant Aramid/Buna-N Pipe Gaskets

In addition to oil, these blended aramid fiber/Buna-N rubber gaskets resist water and aliphatic hydrocarbons such as ethylene.

High-Temperature Oil-Resistant
Carbon/Buna-N Pipe Gaskets

These blended carbon/Buna-N rubber gaskets are unaffected by oil and temperatures up to 650° F.

Oil-Resistant Compressible Buna-N
Pipe Gaskets with Bolt Holes

Made of Buna-N rubber, these gaskets compress to ensure a tight seal. They resist oil, water, and salts.

Oil-Resistant Aramid/Buna-N
Pipe Gaskets with Bolt Holes

These blended aramid fiber/Buna-N rubber gaskets also resist water and aliphatic hydrocarbons such as ethylene.

Oil-Resistant Aramid/Buna-N Pipe
Gaskets with Bolt Holes and Fasteners

Each gasket comes with enough bolts and nuts to create a connection between two steel pipe flanges.

High-Temperature Oil-Resistant
Carbon/Buna-N Pipe Gaskets with Bolt Holes

Carbon is blended with Buna-N rubber for gaskets that are unaffected by oil and temperatures up to 650° F.

Made-to-Order Oil-Resistant Aramid/Buna-N Gaskets

Also resist aliphatic hydrocarbons, such as ethylene.

Foam

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 offer good resistance to oil.

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.

Oil-Resistant Buna-N Foam Sheets and Strips

Made of Buna-N foam, these sheets offer better oil resistance than blended Buna-N foam. They also resist fuel and solvents.

Oil-Resistant Buna-N Foam Cords

Use these Buna-N foam cords to seal and cushion narrow spaces that come into contact with oil.

Foam Material Sample Packs

Plastic and Rubber Tubing for Flow

Oil-Resistant Soft Rubber
Tubing for Fuel and Lubricants

With the best oil resistance of all our fuel and lubricant tubing, this tubing won’t deteriorate or become brittle when exposed to oil—even with long-term use.

Plastic and Rubber Tubing Material Sample Packs

These packs include individually marked pieces of tubing in a variety of materials.

High-Pressure Firm Plastic and
Rubber Tubing for Air and Water

A braid reinforcement gives this tubing excellent strength in high-pressure applications up to 250 psi.

Push-On Seals with Bulb

Oil-Resistant Rubber Push-On Seals with Bulb on Top

The Buna-N foam rubber bulb on these seals also resists grease, salts, water, steam, and most detergents.

Oil-Resistant Push-On Seals with Bulb on Side

In addition to oil, these seals resist grease, salts, water, steam, and most detergents.

About O-Rings

Oil-Resistant Rubber

Oil-Resistant Buna-N Rubber Sheets, Bars, and Strips

High-Strength Oil-ResistantBuna-N Rubber Sheets and Strips

Food Industry Oil-ResistantBuna-N Rubber Sheets and Strips

Oil-Resistant High-Temperature Buna-N Rubber Sheets

Food Industry Ultra-Strength Oil-ResistantBuna-N/Vinyl Rubber Sheets

Ultra-Strength Oil-ResistantBuna-N Rubber Sheets and Strips

Food Industry High-Strength Oil-ResistantBuna-N Rubber Sheets and Strips

Fabric-Reinforced Oil-Resistant Buna-N Rubber Sheets

Oil-Resistant Buna-N Rubber Rods

Oil-Resistant Buna-N Rubber Tubes