Applications - Industrial - O-Rings
Description
O-Rings typically are used to seal between two surfaces. The o-ring presses against both surface with enough force that the fluid or gas can not escape. Because of the way most o-ring grooves are designed the o-ring is actually pushed into the gap between the mating surfaces by pressure on the other side.
Important properties for an o-ring include the ability to maintain its sealing force, usually measured as compression set or compressive stress relaxation, and the ability to maintain its sealing ability under temperature changes and different fluid exposures.
Environment
Industrial O-Rings are exposed to the following:
Temperatures from -40°C to 300°C
Fluids ranging from Water, Oil, Hydraulic Fluids, Refrigerants
Pressures up to 2000 psi
In some service conditions, the parts are required to withstand sudden changes in pressure.
Recommended Polymers
Nipol NBR
Additional Application - Oil
Description
Elastomers in oil service must retain all of the general properties required of O-rings. In addition, the compound should be based on a polymer with excellent resistance to oil exposure at a variety of temperatures and pressures.
Environment
O-rings formulated from Nipol DN 3380 have been tested in service temperatures up to 150°C with good retention of physical properties and minimal volume change.
Recommended Polymer
Nipol DN3380
Additional Application - Water
Description
O-Rings in water service must be formulated specifically to resist deformation with changes in pressure and elevated temperatures. Nipol 1032 and DN 3335 have been formulated and tested for water service.
Environment
Water service typically produces wide shifts in pressure depending on the specific application. Low compression set is imperative for the compound to resist deformation with pressure changes. Compounds should also be tested for retention of properties with aging in water at temperatures up to 100°C.
Recommended Polymers
Nipol 1032
Nipol DN3335
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