Safety closure member
Safety release pipe cap
Safety stop for pressurized pipeline
Seal assemblies for water well casings
Seal assemblies for water-well casings
Sealing plug device for a refrigerant compressor
Sealing plug for a steam-generator tube
Sealing plug for apertures
Self cleaning expandable tube plug
Self-locking plug apparatus for sealing and recovering a pipelin
Self-sealing regulator fill port protective/dust cover
Sewage draining device for recreational vehicles or the like
Sewer drain securing device for use with recreational vehicles
Sewer line clean out units
Sink and bath plugs
Stab-type coupling
Stainless steel security cap for fire hydrants
Sterilized medical tubing cover
Storm drainage conduit plug
Storm drainage conduit plug