... -ring:NBR5.Technics:Forging,Casting ,Moulding,Plating,Polishing6.Typical Applications:Grease, fuels, LP and Natural gas (available on special order),refrigeration ... .45 degree flare fittings3.Compression, bite type, o-ring face seal fittings4.Straight thread, pipe, flange and barb fittings5.Sanitary, steam ...