allpa TMF Axial propeller shaft seals (mechanical shaft seals)

The latest development in this field. This mechanical seal definitely prevents any propeller shaft drip in the bilge. The system consists of a non-rotating carbon cuff joined to the stern tube by means of a rubber bellow and a stainless steel rotor fixed on the propeller shaft. The tension of the bellow, with the help of water pressure, produces a constant contact between the carbon cuff and the stainless steel rotor resulting is a drip free propeller shaft seal.
A neoprene bearing incorporated in the bellow aligns both bearing surfaces and reduces shaft vibrations. Once installed, it does not require any adjustment. Remarkable disalignment is allowed, both axial and angular.