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A detailed 3D animation of a boat's propeller shaft and stuffing box featuring a heavy duty dripless style stuffing box from R.E. Thomas Marine Hardware.

If you're curious how a boat's shaft sealing system works, you'll appreciate this video. If you're looking to upgrade or replace a "face seal" dripless system or "lip seal" dripless shaft seal, you'll also want to watch this video.

R.E. Thomas self-aligning shaft seals feature the same benefits as a modern dripless shaft seal, while giving boaters the peace of mind and proven reliability of a more traditional bronze stuffing box.

There's no carbon face seal to shatter or crack. There's no rubber bellow to lose elasticity or compression. There's no nylon hose barb to snap off. There's no stainless rotor to slide back on the shaft.

R.E. Thomas self-aligning shaft seals are much easier to repair in an emergency, and mariners have trusted the underlying technology for over a century.

Manufactured in the U.S.A., R.E. Thomas SA-Series stuffing boxes offer an uncompromising combination of safety and performance that professional mariners have come to expect and trust.