Used on sentinel class fast response cutter b (frc-b). 4.0" outside diameter full face gasket cms data id 5386 pccn SE0787 plisn A013; next higher assembly firemain system circular
Used on sentinel class fast response cutter b (frc-b). 5.0" outside diameter full face gasket cms data id 5437 pccn SE0700 plisn A009; used on bilge system circular