They can also be made from a number of different substances. Here’s a guide to the kinds of O-Ring materials we use, how they are used, and when to avoid using them..

Nitrile (Buna, Nbr): A Widely Used, Economical Material That Has Strong Wear Resistance And Mechanical Properties:

● Temperature: -55 to 250 degrees Fahrenheit.

● Applications: Petroleum based oils and fuels, dynamic applications.

● Avoid: Brake fluids and ozone.

Hydrogenated Nitrile (Hnbr): Nitrile Base With Added Chemical Strength And Resistance Following Hydrogenation.

● Temperature: -50 to 300 degrees Fahrenheit.

● Applications: Water and steam up to 300 degrees Fahrenheit, fuel systems, oil resistant and high abrasion applications.

● Avoid: Strong acids and polar solvents such as ethers and ketones

Polyacrylate (acm): Widely Used By Auto Makers In Power Steering And Transmission Systems

● Temperature: -15 to 350 degrees Fahrenheit.

● Applications: Mineral oil, engines, gear boxes, power steering, transmissions.

● Avoid: Cold temperatures, hot water, steam.

Ethylene-propylene (epdm): Strong Ozone And Chemical Resistance

● Temperature: -55 to 275 degrees Fahrenheit, 300 degrees Fahrenheit when used with peroxide curing agents.

● Applications: Brake systems, glycol-based fluids, H20 steam

● Avoid: Mineral oil products and hydrocarbon fluids.

Chloroprene (neoprene, Cr): The First Commercial Synthetic Rubber Developed, Chloroprene Has Good Mechanical Properties Over A Wide Range Of Temperatures

● Temperature: -40 to 250 degrees Fahrenheit.

● Applications: Refrigeration, due to its excellent ozone resistance, low-temp H20

● Avoid: Esters, ketones and aromatic and chlorinated hydrocarbons.

Butyl: An All-petroleum Compound, Butyl Has Low Gas Permeability And Good Resistance To Sun Exposure And Ozone

● Temperature: -70 to 400 degrees Fahrenheit.

●Applications: Life science and medical devices, FDA applications, numerous specialized compounds for specific material certifications

● Avoid: Highly abrasive applications and water and steam over 250 degrees Fahrenheit.

Fluorosilicone (Fvmq): Broad Temperature Performance And Strong Fuel And Solvent Resistance, But Weak Abrasion Resistance Due To High Friction

● Temperature: -75 to 400 degrees Fahrenheit.

● Applications: Aerospace, fuel and mineral oil.

● Avoid: High temperature air, dynamic applications.

Fluorocarbon (Viton, Fkm): The High Fluorine Levels In Fluorocarbon Rings Give Them Excellent Swelling And Permeability Resistance. They Also Feature High Temperature And Chemical Resistance

● Temperature: -15 to 400 degrees Fahrenheit.

● Applications: Broad chemical resistance, transmission and blended gasoline

● Avoid: Low temperatures, ketones and amines.

Tetrafluoroethylene-propylene (aflas): Excellent Chemical And Temperature Performance

● Temperature: 15 to 450 degrees Fahrenheit.

● Applications: Aerospace, steam, hot water, oil fields

● Avoid: Chlorinated hydrocarbons, ketones, acetic acid.

Perfluoelastomer (ffkm): Of All Elastomers, This One Has The Highest Performing Temperature And Chemical Properties, As Well As Low Out-gassing And Extractable Properties

● Temperature: -15 to 600 degrees Fahrenheit.

● Applications: Semiconductors, chemical processing, vacuum applications

● Avoid: Fluorinated solvents and perfluorinated lubricants.

If you have questions about O-Ring materials, contact Gallagher Fluid Seals, Inc. Our experts can answer any questions you might have about these small, yet crucial, sealing products.

You can also learn more about O-Rings by downloading this guide, which discusses their technical performance characteristics, materials, chemical and temperature compatibility, hardware considerations and failure modes.

Keyword:

As the leading designer and manufacturer of rubber parts and seals, DESIOR Rubber has a wide range of products to meet all your sealing needs. From our vast o-ring inventory of virtually any shape and size to our complex, custom sealing solutions, we have precisely what you need for any sealing application.

< 1 2 >

Have a inquiry?

All You Need to Know About Silicone O-Rings in the Chemical Industry

Discover the essential information about silicone O-rings and their applications in the chemical industry. Learn about their unique properties, benefits, and how they are used in various rubber produc

Comtats Us