Ge Mao Rubber Industrial Co., Ltd is a manufacturer of o-rings and gasket seals
Nitrile o-rings and seals are
commonly used in hydraulic seals and pneumatic seals because of its
superior resistance to wear and abrasion. As such, nitrile is the
standard compound specified for such uses.
However, nitrile or nbr may not be suitable or compatible with
direct sunlight exposure and the ability of nitrile to resist the
degradation effects of ozone and sunlight is limited.
Hydrogenated form of
known as HNBR is a formulation that addresses these shortfalls.
Enhance formulations can enable nitrile to have added properties in
terms of chemical and physical abilities. Nitrile is extensively specified
as a material for use in many applications over a wide range of
industries because of its relatively low cost and desirable
Typical properties of
Nitrile o-rings and seals include:
¡¸ Low compression set and excellent resistance to abrasion and wear.
¡¸ Ability to resist a wide range of industrial chemicals, including aliphatic
hydrocarbons like fuel oils,
butane, diesel and propane.
¡¸ Also included are hydraulic fluids, silicone grease and di-ester based
Nitrile is not
¡¸ Ozone exposure
¡¸ Direct exposure to sunlight and weathering
¡¸ Aromatic fuels
¡¸ Brake fluids (glycol-based)
¡¸ Aromatic/chlorinated hydrocarbons
¡¸ Aldehydes, ketones and strong acids.