Acushnet O-Ring Products

O-Ring Groove and Design Data Seal Applications

All seal applications may be broken down into static (the O-Ring and metal surfaces remain relatively fixed) or dynamic (the O-Ring moves relative to the mating surface).

Static Sealing

Most O-Rings are used in static service. They may be applied as face seals or radial seals. In face seal applications, the O-Ring should seat against the low pressure side of the groove.

Dynamic Sealing

A moving seal may be further classified by the type of motion: reciprocating, oscillating, or rotating. The greatest number of dynamic seals are used in reciprocating service in cylinders, valves, and linear actuators. Oscillating motion is encountered in swivels and valve stems. When an O-Ring is used on a rotating shaft, it should be limited to light duty where the shaft speed is low and some fluid bypass is acceptable.

In all dynamic applications, proper lubrication and good heat dissipation are essential to long seal life and performance. In pneumatic applications, supplemental lubrication should be provided. Lubricants should be selected on the basis of the material of which the O-Ring is made and the type of service to which it will be subjected. (See Table). In other instances the lubricant can be molded into the O-Ring, or Teflon or other coatings can be applied to the surface.

General Purpose Lubricants for Common O-Ring Elastomers

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