There are two main types of oil seal : static and dynamic. A static oil seal fits between two non-moving parts, a dynamic oil seal between a stationary part and a moving one. Most oil seals are made of synthetic rubber.

An example of a static seal is a simple ‘O’ ring. These seals can be found in such places as the oil filter used on combined automatic gearbox and engine units, on conventional gearbox front covers and in automatic gearboxes.

Dynamic seals are more complex in shape, with one or two lips, depending on where they are situated. These are widely used in the transmission system of both front and rear-wheel-drive cars, where oil must be sealed in where a rotating shaft passes through a component. For example, at the outer end of a half shaft and on the differential pinion.

Dynamic seals also contain a thin coiled spring, called a ‘garter spring’, which holds the sealing lip in contact with the revolving shaft.

“Keyword”
“how to remove oil seal from gearbox”
“oil seal installation direction”
“how to install oil seal on shaft”
“oil seal for gearbox”
“how to stop gearbox oil leak”
“crankshaft oil seal replacement”
“gearbox oil seal catalog”
“how to remove oil seal without damaging”