Adjustable seal for propeller drive shaft

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member


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277 91, 277212FB, 440112, F16J 1534, B63H 2336




An adjustable sealing device for sealing between rotatable drive shaft, such as a propeller drive shaft, and the aperture in a structure, such as the hull or bulkhead of a vessel, through which the shaft passes. The device is generally rigid and is comprised of an adapter ring, a slide ring, a diaphragm positioned between the adapter ring and the slide ring, a friction ring having one end positioned in the adapter ring and a seal surface engageable with the seal surface of a seal ring rotatable with the shaft, biasing means positioned between the slide ring and the friction ring for urging the seal surfaces together, and a spring cover acting as a seal redundant to the diaphragm.

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"Stuffing Box Black and Blues: OEM Alert," Marine Business Journal, J. Kalvin, Oct. 1993.
"Boatkeeper--No More Stuffing Boxes?" by Bernard Gladstone, Motor Boating & Sealing/Boatkeeper, Nov., 1993.
Advertisement: "Lasdrop Shaft-Seal/`The Dripless and Maintenance-Free Shaft Seal,`".
Advertisement: "Lasdrop Shaft-Seal/End stuffing Box Leaks".
Advertisement: "PSS Packless Sealing System/Dripless, Maintenance-Free Stuffing Box Replacement System for Shafts from 3/4: to 8"."
Advertisement: "PSS Shaft Seal Stuffing Box Replacement Unit."
Advertisement: MAC-Seal.
Advertisement: "Norscot Propeller Shaft Seal".
Advertisement: "Strong Seal Self Aligning Shaft Seal".
Advertisement: "Real Seal".
Advertisement: "Exalto Hollex Seals".
Advertisement: "Max-Prop V.P.".


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