Gaskets are used to seal malleable iron offset or straight fittings on the face of the gas meter when tightening the swivel nut on meter
thread or meter nut plug. These rubber gaskets made of Buna-N or neoprene are resistant to the action of natural and manufactured
gases. The inside diameter is intended to lightly grip the pilot O.D. of the fitting to minimize problems during assembly of the swivel nut
to the meter.