019 O-Ring Seals - Grainger Industrial Supply

Round Viton O-Rings

Round Buna N O-Rings

Round Silicone O-Rings

Round EPDM O-Rings

Round PTFE O-Rings

X Buna N O-Rings

Round Neoprene O-Rings

X Viton O-Rings

Round FEP with Silicone Core O-Rings

Round FEP with Viton Core O-Rings

Round Metal Detectable FDA Buna-N O-Rings

Round Polyurethane O-Rings

Square Viton O-Rings

Round FFKM O-Rings

Round Soft FDA & 3A Silicone O-Rings

Round Soft FDA Viton O-Rings

Round Metal Detectable FDA Viton O-Rings

Square Buna N O-Rings

Round HNBR O-Rings

Round Aflas O-Rings

Round Soft Buna-N O-Rings

Round Fluorosilicone O-Rings

Round Clean Room Buna-N O-Rings

Round Kalrez 7075 O-Rings

Round Internally Lubricated Buna-N O-Rings

Round Conductive Silicone O-Rings

Round Kalrez 6230 O-Rings

Round Metal Detectable Silicone O-Rings

Round Kalrez 4079 O-Rings

Round Clean Room Viton O-Rings

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Viton O-rings resist a wide range of chemicals and high temperatures.


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Buna-N (or nitrile) O-rings create multidirectional seals between two parts in power transmissions or hydraulic/pneumatic cylinders. Made in a round profile, they resist grease and oils, as well as mild chemicals and water.

Silicone round O-rings seal connections in high-temperature, static environments. These O-rings work best in dry heat, ozone areas, and when in contact with mineral oils.

These O-rings feature Ethylene Propylene Diene Monomer (EPDM) rubber construction. EPDM offers outstanding resistance to weather, heat, and ozone. It is also compatible with ketones, fireproof hydraulic fluids, alkalis, and water.

900 Series O-Rings feature a round cross-section.

Buna N and Viton® O-Rings can be used for sealing valves, faucets, flanges, engines, and more. Each features a round cross-section. Medium-hard.

FDA and NSF61 Compliant O-Rings feature a round cross section and medium hardness. They offer low-temperature flexibility with low gas permeability, and are resistant to ozone, weather, water, steam, diluted acids, and diluted alkalis. Black color. Durometer: 70 Shore A. Temp. range: -65° to 250°F.

PTFE O-Rings each feature a round cross-section design. PTFE operating temp.: -100° to 500°F

Quattro® Seal O-Rings feature 4 sealing surfaces to help reduce the amount of squeeze required to create a positive seal. They also help reduce friction and extend seal life. Black color. All conform dimensionally to AS568 O-ring sizes.

Neoprene O-Rings each feature a round cross-section design. Neoprene operating temp.: -40° to 275°F.

Viton helps provide superior resistance to permeation, extreme temperature, and a wide range of aggressive fluids. It also offers higher temperature and chemical resistance to Buna-N seals.

These O-rings feature Fluorinated Ethylene Propylene (FEP) construction. FEP is resistant to corrosion and caustic agents. It has a melting point of 260 °C (500 °F). They also feature a silicone core. Silicone offers low thermal conductivity, toxicity, and chemical reactivity. It also resists damage from oxygen, ozone, and UV light.

These O-rings feature Fluorinated Ethylene Propylene (FEP) construction. FEP is resistant to corrosion and caustic agents. It has a melting point of 260 °C (500 °F). They also feature a viton core. Viton helps provide superior resistance to permeation, extreme temperature, and a wide range of aggressive fluids.

Metal fillers allow these food-grade round O-rings to be picked up by metal detection systems if they fall into a process stream. Buna-N is suitable for a broad range of fluids including oils, water, and mild chemicals.

Polyurethane round O-rings wear well and resist abrasion in applications requiring rubber or plastic components. Known for strong sealing ability, these O-rings are used in line shaft conveyors, robotics, engravers, and tire manufacturing.

Square cross section O-rings have a large continuous sealing surface for a tighter seal in static applications. Viton has good resistance to a wide range of chemicals and high temperatures.

Perfluoroelastomer (FFKM) round O-rings resist harsh chemicals and extreme temperatures. They are used as sealers in aggressive chemical environments. Typical applications include chemical, aerospace, oil and high-vacuum technology industries.

Soft formulation makes these round O-rings more compressible so that they conform better to surfaces and create a tighter seal. These food grade O-rings are 3A certified for use in food, beverage, and pharmaceutical applications. Silicone is resistant to high temperatures.

Soft formulation makes these round O-rings more compressible so that they conform better to surfaces and create a tighter seal. These food grade O-rings are commonly used in food, beverage, and pharmaceutical applications. Viton has good resistance to a wide range of chemicals and high temperatures.

Metal fillers allow these food-grade round O-rings to be picked up by metal detection systems. Viton has good resistance to a wide range of chemicals and high temperatures.

Square cross section O-rings have a large continuous sealing surface for a tighter seal in static applications. They cover more surface than round-profile O-rings and are commonly used in hose, pipe, and faucet connections.

HNBR round O-rings, or highly saturated nitrile, resist oils, mild chemicals, and water. They are more heat and abrasion resistant than Buna-N.

Aflas o-rings are resistant to high temperatures and petrochemicals.

Soft formulation makes these round O-rings more compressible so that they conform better to surfaces and create a tighter seal. Buna-N is suitable for a broad range of fluids including oils, water, and mild chemicals.

Fluorosilicone round O-rings excel in low-temperature environments and resist jet fuels and mineral oils. They are used in aerospace, automotive, and semiconductor applications. Fluorosilicone O-rings are a hybrid of silicone and FKM materials.

These round food-grade O-rings are cleaned and bagged in an ISO Class 7 (10,000) clean room to remove direct, bacteria, and surface particles. Buna-N is suitable for a broad range of fluids including oils, water, and mild chemicals.

Kalrez 7075 round O-rings return to their normal state after being repetitively compressed. These O-rings are durable and withstand hot and cold temperatures and have a glossier finish than other Kalrez models. They are designed for use in the chemical and hydrocarbon processing industries.

Graphite filler serves as an internal lubricant, making for easier installation and reducing wear to extend seal life. These round O-rings do not stick to moving parts and are designed for use in start-stop applications

These electrically conductive round O-rings divert static charges away from sensitive equipment. Silicone is resistant to high temperatures.

Kalrez 6230 is a food- and medical-grade round O-ring useful when high purity is needed. They are made of FDA-listed materials and are 3-A and USP VI certified. Like other Kalrez O-rings, these seals also resist harsh chemicals and extreme temperatures.

Metal detectable silicone O-rings work with inline x-ray, steel discovery and magnetic separation devices for prompt contamination alert. These round O-rings help reduce the risk of contamination by very early detection and containment.

Kalrez 4079 O-rings are black, low-compression seals for dry and wet semiconductor process environments. They offer strong chemical resistance and thermal stability.

These food-grade round O-rings are cleaned and bagged in an ISO Class 7 (10,000) clean room to remove dirt, bacteria, and surface particles. Viton has good resistance to a wide range of chemicals and high temperatures.

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