What Is a Crankshaft Seal?
A crankshaft is one of several core components within an internal combustion engine and is the part that connects through a clutch mechanism to the gearbox and transmission systems, to provide drive. It operates at high speed and is driven by the upward and downward movement of the pistons, which are set into motion by explosive compression. As a crankshaft needs to protrude out of not only the rear of the engine (to match up with the clutch and gearbox), but also out of the front of the engine (to provide drive for the ancillaries) it needs another component to provide an effective seal. This is the job of the crankshaft seal.