
Figure 2: Typically shaped oil seal and component nomenclature
HIGH-QUALITY INDUSTRIAL OIL SEALS
R
Rotary Wheel Of Auto Parts
Fluorine rubber (FKM, Viton™)
Viton®
High level of chemical resistance
High temperature resistance
Selecting Quality Car Engine Head Gaskets and Automotive Rubber Gaskets
A typical oil seal consists of three common parts: an outer ring, the sealing element, and a spring. The exterior metal ring component provides strength and rigidity to the oil seal in the bore or recessed groove. Attached to that ring is the sealing element. This flexible interior component of the oil seal, the O-ring, prevents any fluid leaks between the shaft and housing. A spring ensures the constant pressure that deforms the O-ring, creating a reliable seal while maintaining radial force on the shaft.
1. Criteria for selecting oil seals
In this an auxiliary lip is provided along with the regular sealing lip. The additional dust lip protects the main sealing lip against dust and other fine solid contaminants and therefore this type is recommended for use in polluted environments. To achieve a long lifetime a suitable lubricant between the two sealing lips should be applied.
The sealing element makes up the interior of the oil seal, and the materials commonly used are: