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General Purpose O-Rings

General Purpose O-Rings

Take on a range of tasks such as sealing faucets, valves, and flanges with these multipurpose O-rings. They are available in different elastomers to provide the chemical resistances and physical properties needed for your application. All inch sizes conform to AS568 standards for dimensions and tolerances.

Buna-N: Best for Oil Resistance & General Use

With excellent resistance to petroleum oils and gasoline, these Buna-N O-rings are a good choice for general use and low-pressure hydraulic and pneumatic seals. Buna-N, also known as nitrile rubber, is a strong, abrasion-resistant material that also offers good compression set resistance to minimize loss of resiliency.

Round Shape — Black

0.056 in Actual Width, 116 in Nominal Width

0.072 in Actual Width, 116 in Nominal Width

0.078 in Actual Width, 564 in Nominal Width

0.082 in Actual Width, 564 in Nominal Width

0.087 in Actual Width, 564 in Nominal Width

0.097 in Actual Width, 332 in Nominal Width

0.116 in Actual Width, 764 in Nominal Width

0.118 in Actual Width, 764 in Nominal Width

0.040 in Actual Width, 132 in Nominal Width

0.050 in Actual Width, 364 in Nominal Width

0.060 in Actual Width, 116 in Nominal Width

0.064 in Actual Width, 116 in Nominal Width

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

0.210 in Actual Width, 316 in Nominal Width

0.275 in Actual Width, 14 in Nominal Width

1.0 mm Actual Width, 1 mm Nominal Width

1.5 mm Actual Width, 1 12 mm Nominal Width

1.6 mm Actual Width, 1 35 mm Nominal Width

1.9 mm Actual Width, 1 910 mm Nominal Width

2.0 mm Actual Width, 2 mm Nominal Width

2.4 mm Actual Width, 2 25 mm Nominal Width

2.5 mm Actual Width, 2 12 mm Nominal Width

2.6 mm Actual Width, 2 25 mm Nominal Width

3.0 mm Actual Width, 3 mm Nominal Width

3.1 mm Actual Width, 3 110 mm Nominal Width

3.5 mm Actual Width, 3 12 mm Nominal Width

4.0 mm Actual Width, 4 mm Nominal Width

X-Shape Shape — Black

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

0.210 in Actual Width, 316 in Nominal Width

Viton®: Best for Chemical Resistance

Resistant to a broad range of chemicals, these Viton O-rings are often used in equipment for chemical processing, paper and pulp production, and other harsh applications. Viton is compatible with most acids, petroleum oils, fuels, silicone oils, and greases, and has excellent compression set resistance to minimize loss of resiliency.

Round Shape — Black

1.6 mm Actual Width, 1 35 mm Nominal Width

2.4 mm Actual Width, 2 25 mm Nominal Width

2.5 mm Actual Width, 2 12 mm Nominal Width

0.056 in Actual Width, 116 in Nominal Width

0.064 in Actual Width, 116 in Nominal Width

0.072 in Actual Width, 116 in Nominal Width

0.078 in Actual Width, 564 in Nominal Width

0.082 in Actual Width, 564 in Nominal Width

0.087 in Actual Width, 564 in Nominal Width

0.097 in Actual Width, 332 in Nominal Width

0.116 in Actual Width, 764 in Nominal Width

0.118 in Actual Width, 764 in Nominal Width

0.040 in Actual Width, 132 in Nominal Width

0.050 in Actual Width, 364 in Nominal Width

0.060 in Actual Width, 116 in Nominal Width

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

0.210 in Actual Width, 316 in Nominal Width

0.275 in Actual Width, 14 in Nominal Width

1.0 mm Actual Width, 1 mm Nominal Width

1.5 mm Actual Width, 1 12 mm Nominal Width

2.0 mm Actual Width, 2 mm Nominal Width

3.0 mm Actual Width, 3 mm Nominal Width

Round Shape — Brown

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

Round Shape — Clear with Red Core

0.275 in Actual Width, 14 in Nominal Width

X-Shape Shape — Black

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

Viton® ETP: Best for Extreme Chemical Resistance

Offering greater resistance to chemicals than standard Viton, Viton ETP O-rings can withstand bases, amines, and other caustic solutions. They are a good choice for extreme environments, but are less resistant to compression set.

Black — for -10 ° F to 400 ° F

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

Silicone: Best for Heat Resistance

For applications where you need heat-resistant seals, choose silicone O-rings for their stability at high temperatures and resistance to aging. They are typically used as static seals in food processing and in dry heat applications.

Red — for -65 ° F to 400 ° F

0.040 in Actual Width, 132 in Nominal Width

0.050 in Actual Width, 364 in Nominal Width

0.060 in Actual Width, 116 in Nominal Width

0.064 in Actual Width, 116 in Nominal Width

0.070 in Actual Width, 116 in Nominal Width

0.072 in Actual Width, 116 in Nominal Width

0.078 in Actual Width, 564 in Nominal Width

0.082 in Actual Width, 564 in Nominal Width

0.097 in Actual Width, 332 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.116 in Actual Width, 764 in Nominal Width

0.118 in Actual Width, 764 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

0.210 in Actual Width, 316 in Nominal Width

0.275 in Actual Width, 14 in Nominal Width

EPDM: Best for Steam Resistance

Use these EPDM (ethylene propylene diene monomer) O-rings where you need a seal that withstands heat, steam, water, or ozone and is compatible with diluted alkalis and acids. EPDM is a rubber-like elastomer that maintains its flexibility in low temperatures to conform to grooves and surface irregularities.

Black — for -60 ° F to 250 ° F

0.056 in Actual Width, 116 in Nominal Width

0.060 in Actual Width, 116 in Nominal Width

0.070 in Actual Width, 116 in Nominal Width

0.078 in Actual Width, 564 in Nominal Width

0.087 in Actual Width, 564 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

0.210 in Actual Width, 316 in Nominal Width

0.275 in Actual Width, 14 in Nominal Width

PTFE: Best for Temperature Resistance

Made of a semi-rigid plastic, these PTFE (polytetrafluoroethylene) O-rings have excellent tensile strength and chemical resistance, and are stable across a wide temperature range. They have low resilience, making them a good choice for crush seals, and a low coefficient of friction for applications where you want an O-ring that won't stick to components.

White — for -100 ° F to 500 ° F

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

0.210 in Actual Width, 316 in Nominal Width

FEP Encapsulated: Best for Chemical & Temperature Resistance

Combining the resiliency of an elastomer core with the excellent chemical and temperature resistance of FEP (fluorinated ethylene propylene) shielding, these FEP encapsulated O-rings are a good choice in most harsh chemical environments. Commonly used in valve, pump, and pipe linings, FEP withstands petroleum products, phosphate-esters, steam, and heat.

FEP with Viton Core — Clear with Black Core — for up to 400 ° F

0.139 in Actual Width, 18 in Nominal Width

Neoprene: Best for Refrigerants

A common choice for refrigeration and cooling applications, these neoprene O-rings are compatible with refrigerants, ammonia, engine coolants, and petroleum oils. Neoprene flexes while resisting cracking and resists weather, ozone, tearing, and abrasion.

Black — for -40 ° F to 225 ° F

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width

0.139 in Actual Width, 18 in Nominal Width

0.210 in Actual Width, 316 in Nominal Width

Polyurethane: Best for Tear & Abrasion Resistance

Strong and durable, use these polyurethane O-rings for applications requiring excellent wear and abrasion resistance. They are commonly used for sealing hydraulic cylinders, and can function as light-duty drive belts.

Black — for -40 ° F to 180 ° F

0.070 in Actual Width, 116 in Nominal Width

0.103 in Actual Width, 332 in Nominal Width