Attributes . Machined components are manufactured using solid steel bar stock. Stainless steel retaining rings and springs maximize corrosion resistance and extend service life. Steel componentry is plated using ROHS Compliant Zinc Nickel for superior corrosion resistance. Nitrile (Buna-N) seals are standard, providing a temperature range of -40?F to +250?F (-40?C to +121?C); PTFE anti-extrusion ring protects main coupling O-Ring from dynamic impulse pressure damage. Main valve seal is 'housed' to improve seal integrity during pressurized connection/disconnection. . Names