Metric Oil Seals

Metric Oil Seals

Metric oil seals are measured in metric increments, like those used in Europe and Japan, as opposed to standard size. Metric oil seals are used in hydraulic machines; they are placed in the gap between a rotary shaft and its housing in order to prevent leakage. They also keep contaminants, like dust and dirt, out of the hydraulic fluid. Metric oil rings can come in a variety of designs, materials, and metric sizes to fit the dimensions and heat specifications of various mechanisms.

Metric oil seals can be fitted with a single or double lip. Double lip oil rings are designed to provide extra protection against contaminants. Some oil seals are spring-loaded to maintain contact between the seal lip and the shaft.

The oil ring may be made out of a variety of materials. High speed shafts require special materials designed to tolerate high heat and may therefore require a silicone, polyacrylate, or fluoroelastomer composition.