Boat Builders Fitting P.S.S. Shaft Seal As Standard Equipment
Alden Yachts	Azimut
Baha Cruisers ( F.R.P.)	Bayliner (U.S. Marine)
Blackwatch (Little Harbor)	Donzi Yachts
Duffy & Duffy (Atlantic Boat Co.)	Dusky
Formula (Thunderbird Products)	Freedom
Hunter Marine	Island Gypsy (Halvorsen Marine)
Kvichak Marine	Legacy Marine
Little Harbor	M.B. Sports
Maxum (U.S. Marine)	Merritt
Morgan Yachts	Nordic Tugs
Northern Marine	Ocean Alexander (Alexander Marine)
Ocean Yachts	Queencraft (Marine Transport Service)
Roscioli	Rybovich-Spencer
Sabre Corporation	Silverton Marine Corporation
Swan (Nautors)	Tiara (S-2)
Wellcraft	Whiticar Boat Works