Buna-N Rubber | McMaster-Carr

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	For Use With For Use With

	Texture Texture


Smooth	Coarse

Crisscross	Ultra Smooth

	Length Length

	Fractional Width Fractional Width

	For Use Outdoors For Use Outdoors

Yes

	Fractional ID Fractional ID

	Fractional OD Fractional OD

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5,550 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.

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 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.

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 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.

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 Soft Buna-N O-Rings

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

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 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.

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.

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.

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.

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 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 Buna-N
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.

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.

O-Ring Assortments

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.

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.

X-Profile Oil-Resistant
Buna-N 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- 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.

Gasket Material

Oil-Resistant Compressible
Buna-N Gasket Material

Also resistant to water and salts.

Oil-Resistant Food Industry
Compressible Buna-N Gasket Material

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

Oil-Resistant Aramid/Buna-N
Gasket Material

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

Oil-Resistant High-Strength
Aramid/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 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.

High-Temperature Oil-Resistant
Carbon/Buna-N Gasket Material

Made from a blend of carbon and Buna-N rubber, this material is unaffected by oil and temperatures up to 650° F.

Gasket Material Assortments

Each assortment includes a variety of materials to meet your gasketing needs.

Pipe Gaskets

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.

Metal-Detectable Oil-Resistant
Buna-N Pipe Gaskets

Prevent leaks with tight seals in food-processing facilities. These Buna-N gaskets contain metal additives, making them metal detectable to help you comply with Hazard Analysis and Critical Control Point (HACCP) programs.

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.

High-Temperature
Graphite/Buna-N Pipe Gaskets

These gaskets are made from a blend of graphite and Buna-N rubber to withstand temperatures up to 650° F.

Chemical-Resistant Viton®
Fluoroelastomer Pipe Gaskets

Resistant to boric acid, citric acid, isopropyl alcohol, fuel, oil, and transmission fluid.

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.

Metal-Detectable
Oil-Resistant Buna-N Rubber
Pipe Gaskets with Bolt Holes

Make tight seals to prevent leaks in food-processing facilities—these Buna-N gaskets contain metal additives so they can be picked up by metal detectors, helping you comply with Hazard Analysis and Critical Control Point (HACCP) programs. Made of Buna-N rubber, they resist oil, water, and salt, so they hold up in a variety of processes.

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.

High-Temperature Graphite/Buna-N
Pipe Gaskets with Bolt Holes

Made from a blend of graphite and Buna-N rubber, these gaskets withstand temperatures up to 650° F.

Chemical-Resistant Viton®
Fluoroelastomer Pipe
Gaskets with Bolt Holes

These gaskets resist boric acid, citric acid, isopropyl alcohol, fuel, oil, and transmission fluid.

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

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

Also resist aliphatic hydrocarbons, such as ethylene.

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.

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.

Plastic and Rubber Tubing
Material Sample Packs

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

Oil-Resistant Foam

Oil-Resistant Buna-N Foam Sheets

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

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 Cords

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

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.

Terms and Conditions and Privacy Policy

V-Belts

High-Capacity Narrow-Wedge V-Belts

About O-Rings

Oil-Resistant Rubber

Oil-Resistant Buna-N RubberSheets, Bars, and Strips

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

Oil-Resistant High-TemperatureBuna-N Rubber Sheets

Food Industry Oil-ResistantBuna-N Rubber Sheets and Strips

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

Food Industry Ultra-StrengthOil-Resistant Buna-N/Vinyl Rubber Sheets

Food IndustryHigh-Strength Oil-Resistant Buna-N Rubber Sheets and Strips

Fabric-Reinforced Oil-ResistantBuna-N Rubber Sheets

Oil-Resistant Buna-N Rubber Rods

Oil-Resistant Buna-N Rubber Tubes

Oil-Resistant Buna-N Rubber Balls

Oil-Resistant Buna-N O-Rings

Oil-Resistant Buna-N O-Rings

Oil-Resistant Soft Buna-N O-Rings

Oil-Resistant Hard Buna-N O-Rings

Made-to-Order Oil-ResistantBuna-N O-Rings

Oil-Resistant Hard Buna-NO-Rings for Tube Fittings with Straight-Thread Connection

Square-Profile Oil-ResistantBuna-N O-Rings

Double X-Profile Oil-ResistantBuna-N O-Rings

X-Profile Oil-ResistantBuna-N O-Rings

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

Oil-Resistant FoodIndustry Buna-N O-Rings

Oil-Resistant Metal-DetectableBuna-N O-Rings

Oil-Resistant O-Ring Cord Stock

Oil-Resistant Buna-NO-Ring Cord Stock

Oil-Resistant Soft Buna-NO-Ring Cord Stock

Oil-Resistant Hard Buna-NO-Ring Cord Stock

Square-Profile Oil-ResistantBuna-N O-Ring Cord Stock

X-Profile Oil-ResistantBuna-N O-Ring Cord Stock

Oil-Resistant Food IndustryBuna-N O-Ring Cord Stock

O-Ring Assortments

Oil-Resistant Buna-NO-Ring Assortments

Oil-Resistant Soft Buna-NO-Ring Assortments

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

Oil-Resistant Hard Buna-NO-Ring Assortments

X-Profile Oil-ResistantBuna-N O-Ring Assortments

Square-Profile Oil-ResistantBuna-N O-Ring Assortments

Oil- and Chemical-ResistantO-Ring Assortments

O-Ring Bonding Kits

O-Ring Bonding Kits

Gasket Material

Oil-Resistant CompressibleBuna-N Gasket Material

Oil-Resistant Food IndustryCompressible Buna-N Gasket Material

Oil-Resistant Aramid/Buna-NGasket Material

Oil-Resistant High-StrengthAramid/Buna-N Gasket Material

Oil-Resistant Light DutyCork/Buna-N Gasket Material

High-Temperature Oil-ResistantCarbon/Buna-N Gasket Material

Gasket Material Assortments

Pipe Gaskets

Oil-Resistant CompressibleBuna-N Pipe Gaskets

Oil-Resistant Aramid/Buna-NPipe Gaskets with Fasteners

Oil-Resistant Aramid/Buna-NPipe Gaskets

Metal-Detectable Oil-ResistantBuna-N Pipe Gaskets

High-Temperature Oil-ResistantCarbon/Buna-N Pipe Gaskets

High-TemperatureGraphite/Buna-N Pipe Gaskets

Chemical-Resistant Viton®Fluoroelastomer Pipe Gaskets

Oil-Resistant Compressible Buna-NPipe Gaskets with Bolt Holes

Metal-DetectableOil-Resistant Buna-N Rubber Pipe Gaskets with Bolt Holes

Oil-Resistant Aramid/Buna-NPipe Gaskets with Bolt Holes

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

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

High-Temperature Graphite/Buna-NPipe Gaskets with Bolt Holes

Chemical-Resistant Viton®Fluoroelastomer Pipe Gaskets with Bolt Holes

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

Made-to-Order Oil-ResistantAramid/Buna-N Gaskets

Plastic and Rubber Tubing for Flow

Oil-Resistant Soft RubberTubing for Fuel and Lubricants

High-Pressure Firm Plastic andRubber Tubing for Air and Water

Plastic and Rubber TubingMaterial Sample Packs

Oil-Resistant Foam

Oil-Resistant Buna-N Foam Sheets

Flame-Retardant Oil-ResistantBlended Buna-N Foam Sheets and Strips

Oil-Resistant BlendedBuna-N Foam Strips

Oil-Resistant Buna-N Foam Cords

Push-On Seals with Bulb

Oil-Resistant Rubber Push-OnSeals with Bulb on Top

Oil-Resistant Push-OnSeals with Bulb on Side

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

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

Oil-Resistant High-Temperature
Buna-N Rubber Sheets

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

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

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

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

Fabric-Reinforced Oil-Resistant
Buna-N Rubber Sheets

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

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

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

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

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

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

Oil-Resistant Food
Industry Buna-N O-Rings

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

Oil-Resistant Buna-N
O-Ring Cord Stock

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

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

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

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

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

Oil-Resistant Buna-N
O-Ring Assortments

Oil-Resistant Soft Buna-N
O-Ring Assortments

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

Oil-Resistant Hard Buna-N
O-Ring Assortments

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

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

Oil- and Chemical-Resistant
O-Ring Assortments

Oil-Resistant Compressible
Buna-N Gasket Material

Oil-Resistant Food Industry
Compressible Buna-N Gasket Material

Oil-Resistant Aramid/Buna-N
Gasket Material

Oil-Resistant High-Strength
Aramid/Buna-N Gasket Material

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

High-Temperature Oil-Resistant
Carbon/Buna-N Gasket Material

Oil-Resistant Compressible
Buna-N Pipe Gaskets

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

Oil-Resistant Aramid/Buna-N
Pipe Gaskets

Metal-Detectable Oil-Resistant
Buna-N Pipe Gaskets

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

High-Temperature
Graphite/Buna-N Pipe Gaskets

Chemical-Resistant Viton®
Fluoroelastomer Pipe Gaskets

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

Metal-Detectable
Oil-Resistant Buna-N Rubber
Pipe Gaskets with Bolt Holes

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

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

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

High-Temperature Graphite/Buna-N
Pipe Gaskets with Bolt Holes

Chemical-Resistant Viton®
Fluoroelastomer Pipe
Gaskets with Bolt Holes

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

Oil-Resistant Soft Rubber
Tubing for Fuel and Lubricants

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

Plastic and Rubber Tubing
Material Sample Packs

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

Oil-Resistant Blended
Buna-N Foam Strips

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

Oil-Resistant Push-On
Seals with Bulb on Side