Custom O-Rings & Cords

Style 8300 - Elastometric Cords

Phelps Gaskets - O'Rings Cords

Commonly Ordered Materials

Buna N, Nitrile (NBR)

Most commonly used general purpose o-ring material because of relative low cost, good mechanical properties, and basic resistance to many common lubricants. The acrylonitrile content in NBR varies considerably, and impacts the physical properties of the finished material. The higher the acrylonitrile content, the better the resistance to oil and fuel. At the same time, elasticity and resistance to compression set is adversely affected. In view of these characteristics, a medium acrylonitrile content selected. NBR has good mechanical properties when compared with other elastomers and high wear resistance. NBR is not resistant to weathering and ozone

-40°F/-40°C to 275°F/135°C
ASTM Designation
Compatible with exposure to
Water (special compounds up to 200°F)
Vegetable and mineral oils and greases
HFA, HFB and HFC hydraulic fluids
Dilute acids, alkali and salt solutions at low temperatures
Aliphatic hydrocarbons (propane, butane, petroleum oil, mineral oil and grease, diesel fuel, fuel oils)
Not compatible with
Strong acids
Ozone, weather and atmospheric aging
Brake fluid with glycol base
Aromatic hydrocarbons (benzene)
Chlorinated hydrocarbons (trichloroethylene)
Polar solvents (ketone, acetone, acetic acid, ethylene-ester)
Fuels of high aromatic content (for fl ex fuels a special compound must be used)

Other Styles in the Custom O-Rings & Cords

Custom O-Rings

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