This O-ring is made of blue fluorosilicone, is round in cross-section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. Fluorosilicone has very good resistance to ozone, weathering, detergent, salt water, engine and transmission oil, non-petroleum brake fluid, hydraulic fluids that resist fire, vegetable and animal oils, high molecular weight chlorinated aromatic hydrocarbons, and has better mineral oil, fuel, and aromatic hydrocarbons (benzene) compatibility than silicone. Fluorosilicone is acceptable for temperature applications between -100 degrees F (-73 degrees C) to 350 degrees F (177 degrees C). Like silicone, fluorosilicone is vulnerable to mechanical wear and tear, water and steam over 250 degrees F (121degrees C), chlorinated... Less

This silicone O-ring is red in color, round in shape, has a durometer of 7OA, and is designed for use in a wide variety of sealing applications. Silicone is acceptable for temperature applications between -65 degrees F (-54 degrees C) to 450 degrees F (232 degrees C). It has good resistance to ozone, weather, detergent, salt water, engine and transmission oil, non-petroleum brake fluid, hydraulic fluids that resist fire, vegetable and animal oils, and high molecular weight chlorinated aromatic hydrocarbons. Silicone is vulnerable to mechanical wear and tear, water and steam over 250 degrees F (121 degrees C), aromatic hydrocarbons (benzene), chlorinated hydrocarbons (trichloroethylen e), acids and bases, and hydrocarbon fuels. O-rings commonly provide a pressure and fluid seal between... Less

This black neoprene O-ring has a durometer of 70A, a round cross-section, and can be used across a wide temperature range (-65 degrees F/-54 degrees C to 275 degrees F/135 degrees C). Designed for use in a wide variety of sealing applications, this neoprene O-ring meets standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings. Neoprene (polychloroprene) can have a high tensile strength, and has abrasion, tear, and compression set resistance. It is generally fire resistant and compatible for use with ozone, sunlight, ammonia, Freon, and some hydrocarbons. It also had good adhesion to metal and is often used in metal to rubber bonding applications. Neoprene is vulnerable to ketones, acids, brake fluids and phosphate esters. The durometer hardness... Less

This O-ring is made of black Kalrez 6375 (perfluoroelastom er) and has a durometer of 75A. It has a round cross-section and can be used across a wide temperature range (27 degrees F/-2.8 degrees C to 527 degrees F/275 degrees C). Designed for use in a wide variety of sealing applications, this Kalrez O-ring meets standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings. Kalrez 6375 has low compression set and excellent resistance to many reactive gases, plasmas, alkalis, acids and solvents. It performs well in mixed streams, mechanical applications, under temperature cycling, in steam and hot air, and exhibits low swell in acids, and aldehydes. DuPont manufactures Kalrez in facilities that are ISO 9000 and AS 9100 registered. The durometer... Less

This O-ring is made of black Buna-nitrile (Buna-N) and has a durometer of 90A. It has a round cross-section and can be used across a wide temperature range (-30 degrees F/-34 degrees C to 250 degrees F/121 degrees C). Designed for use in a wide variety of sealing applications, this Buna-nitrile O-ring meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings. Buna-nitrile can have high tensile strength, and has abrasion, tear, and compression set resistance. It is compatible for use with petroleum, hexafluoroacetone (HFA), hexafluoro-2-butyn e (HFB) and hydrofluorocarbon (HFC) fluids, vegetable oil, alcohol, acids, and aliphatic hydrocarbons. Buna-nitrile is vulnerable to acetone, ethers, esters, ozone, sunlight and weathering, and should not... Less

This O-ring is made of black Buna-nitrile (Buna-N) and has a durometer of 70A. It has a square cross-section and can be used across a wide temperature range (-30 degrees F/-34 degrees C to 250 degrees F/121 degrees C). Designed for use in a wide variety of sealing applications, this square O-ring can provide a superior seal to round O-rings in static applications, but is usually not as effective in dynamic applications. This Buna-nitrile O-ring meet standards defined by Aerospace Standard AS568A, which is the Aerospace Size Standard for O-rings. Buna-nitrile can have high tensile strength, and has abrasion, tear, and compression set resistance. It is compatible for use with petroleum, hexafluoroacetone (HFA), hexafluoro-2-butyn e (HFB) and hydrofluorocarbon (HFC) fluids, vegetable oil,... Less

This O-ring is made of black Buna-nitrile, is round in cross-section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. Buna-nitrile can have high tensile strength, and abrasion, tear, and compression set resistance. It can be used in temperatures between -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C), and is compatible for use with petroleum, HFA, HFB and HFC fluids, vegetable oil, alcohol, acids and aliphatic hydrocarbons. Buna-nitrile is vulnerable to acetone, ethers, esters, ozone, sunlight and weathering and should therefore not be used in ozone-generating electric motors, welding equipment, or in applications with exposure to UV light. This Buna O-ring has a shore durometer of 70A. Shore durometer is the hardness of a... Less

This EPDM O-ring is black in color, round in cross-section, has a durometer of 70A, and is designed for use in a wide variety of sealing applications. EPDM is acceptable for temperature applications between -70 degrees F (-57 degrees C) to 300 degrees F (149 degrees C). It is compatible for use with water and steam, silicone oil and grease, polar solvents (alcohols), acids, glycol-based brake fluids, ozone, and weathering. It is vulnerable to many oils, gasoline, and solvents. This material meets ASTM International standards. This EPDM O-ring has a shore durometer of 70A. Shore durometer is the hardness of a material, and its resistance to permanent indentation. A higher durometer value indicates greater resistance to indentation on a scale of 0 to 100, with 100 indicating no... Less

Nylon Covered Fiberglass Reinforced Neoprene One-Sided Timing Belts. Evenly spaced teeth on the inside circumference of One-Sided Timing Belts help avoid the slippage or creep encountered with simple flat belts. Important for applications involving a definite motion sequence or indexing, these belts are capable of transmitting high torque and can withstand rapid accelerations. The trapezoidal tooth profile concentrates stress near the root of the tooth, promoting positive grip and uniform speed transmission. Made of Nylon Covered Fiberglass Reinforced Neoprene, these belts require no lubrication, are resistant to chemicals, and have very low stretch with excellent strength and dimensional stability. Also, since a narrower belt will handle a larger load, they are generally of lower cost... Less

Nylon Covered Fiberglass Reinforced Neoprene One-Sided Timing Belts. Evenly spaced teeth on the inside circumference of One-Sided Timing Belts help avoid the slippage or creep encountered with simple flat belts. Important for applications involving a definite motion sequence or indexing, these belts are capable of transmitting high torque and can withstand rapid accelerations. The trapezoidal tooth profile concentrates stress near the root of the tooth, promoting positive grip and uniform speed transmission. Made of Nylon Covered Fiberglass Reinforced Neoprene, these belts require no lubrication, are resistant to chemicals, and have very low stretch with excellent strength and dimensional stability. Also, since a narrower belt will handle a larger load, they are generally of lower cost... Less

Made of ethylene propylene diene monomer (EPDM) rubber for use with a variety of chemicals and environments Can be used in a wide temperature range from -70 degrees F (-57 degrees C) to 300 degrees F (149 degrees C) Round in cross-section to provide a seal between cylindrical overlapping surfaces Durometer (hardness) of 70A for resistance to penetration Meets standards defined by Aerospace Standard AS568A

Made of fluorosilicone rubber for use with a variety of fluids Can be used across a wide temperature range from -100 degrees F (-73 degrees C) to 350 degrees F (177 degrees C) Round in cross-section to provide a seal between cylindrical overlapping surfaces Durometer (hardness) of 70A for resistance to penetration Meets standards defined by Aerospace Standard AS568A

153 Buna-N O-Ring, 70A Durometer, Quad, Black, 3-1/2" ID, 3-11/16" OD, 3/32" Width (Pack of 10)

Made of Buna-nitrile for use with a variety of fluids and hydrocarbons Can be used across a wide temperature range from -30 degrees F (-34 degrees C) to 250 degrees F (121 degrees C) Round in cross-section to provide a seal between cylindrical overlapping surfaces Durometer (hardness) of 70A for resistance to penetration