For those application involving the separation of two fluids, difficult or unusual sealing problems, Oil seals  are Radial Shaft Seals supplied ready for assembly and can be used on shafts or axles that rotate clockwise or counter clockwise.

Generally oil seals are fitted only in spaces with low differential pressures.
While ordering or seal designing the following inter - dependent variables must be considered carefully, If the required end product performance is to be achieved.

a)  Medium to be sealed and its chemical details
b) Anticipated operating temperature range both high and low
c)  Pressure range and frequency of application
d)  Clearance between mating components
e)  Degree of lubrication present
f)   Frequency and speed of relative motion.
g)  Surface finish on adjacent components.
h)   Method of handling and installation immediately prior to assembly.

The oil seals consists of a rubber, like sleeve and a metallic stiffer ring which forms a composite product. In the radial direction, the flex section ends in a lip on which an annular spiral tension spring is inserted.

Depending on the design the radial shaft seal can also be provided with a dust lip, double lip, inner cap, for exclusion of abrasive & foreign matter.

Thus the common types are MI, MIDL, MO MODL, MOC, MOCDL.

Bonded seal, face seal, thread seal for sealing bolt heads, nuts, and face fitting providing a positive seal directly against the threads of a bolt  / end fittinig.

Self centering and easily installable : Seals are  available  in all popular BSP sizes and many other metric sizes.