Body
Nitrile (Buna-N, NBR) O-Rings
- Most common, general-purpose elastomer
- Good resistance to oils, fuels, hydraulic fluids, and water
- Temperature range: approx. -40°C to +120°C (-40°F to +250°F)
- Cost-effective and widely available
EPDM O-Rings
- Excellent resistance to steam, hot water, weather, ozone, and brake fluids
- Not suitable for petroleum-based oils and fuels
- Temperature range: -50°C to +150°C (-60°F to +300°F)
- FDA compounds
FKM / (VITON®) O-Rings (“A” Compound)
- High chemical resistance, especially to fuels, solvents, and aggressive chemicals
- Handles high temperatures: -20°C to +200°C (-5°F to +400°F)
- Common in aerospace, automotive, and chemical industries
- FDA compounds
Silicone O-Rings
- Excellent flexibility and low-temperature performance
- Good resistance to weather, ozone, and some chemicals
- Not ideal for dynamic sealing with high friction
- Temperature range: -60°C to +200°C (-75°F to +400°F)
- FDA compounds
PTFE (Teflon®) O-Rings
- Extremely resistant to chemicals, solvents, and high temperatures
- Low friction and non-stick surface
- Less elastic than rubber; often used with backup rings
- Temperature range: -200°C to +260°C (-325°F to +500°F)
- FDA compliant
FFKM (Perfluoroelastomer) O-Rings
- Highest performance, premium material available with maximum chemical and heat resistance
- Performs in extreme environments: aggressive chemicals, high vacuum, and plasma
- Temperature range: up to +327°C (620°F) depending on grade.
- Common in semiconductor, chemical processing, and aerospace
- FDA compounds
Polyurethane (Urethane) O-rings
- Outstanding abrasion resistance and good tensile strength
- Excellent resistance to mineral based oils, petroleum products
- Temperature range: -52° C to +106°C (-60° to +225°F)
- General Hydraulic and PneumaƟc cylinders
Neoprene (Chloroprene, CR) O-rings
- Commonly used in refrigerant applicaƟons (Freons and ammonia)
- Moderate resistance to petroleum oils, ozone, UV, and sunlight
- Temperature range: -43°C to +120°C (-45°F to +250°F)
- Low compression set, good recovery, and abrasion resistance
AFLAS® (TFE/P) O-rings
- Recommended for most acids, solvents, halogenated hydrocarbons
- Excellent in petroleum oils, amines, bases and steam
- Temperature range: 0°C to +232C (32°F to +450°F)
- Excellent permeaƟon resistance
Fluorosilicone O-rings
- Wide temperature range, used in jet fuel, some chlorinate solvents, and petroleum oils
- Common aerospace material and many automoƟve compliant compounds.
- Temperature range: -63°C to + 175°C (-80°F to + 350°F)
PTFE Encapsulated O-rings
- Encapsulated O-rings combine the chemical resistance and extreme-temperature performance of FEP or PFA with the elasƟcity of silicone, or FKM o-ring energizers. The exterior jacket, typically made of FEP, PFA, or PTFE, provides excellent chemical resistance, low compression set, and wide operaƟng temperature ranges, with FEP rated from -420°F to 400°F and PFA from -420°F to 500°F. The inside energizer provides enhanced resilience and sealing performance in cryogenic or dynamic applicaƟons. Silicone ensures cold flexibility, FKM delivers quick shape recovery with outstanding compression set.
- Outstanding chemical resistance
- High pressure capability with non-sƟck and low fricƟon characterisƟcs
- FDA compliant