Attributes . Machined components are manufactured using solid bar stock; Stainless steel balls, retaining rings and springs maximize corrosion resistance and extend service life. Steel componentry is plated using ROHS Compliant Trivalent Chrome. Steel coupler sleeves are hardened to resist deformation and maximize service life. Nitrile (Buna-N) seals are standard; Incorporates PTFE or TPC-ET anti-extrusion rings to protect seal components from dynamic impulse damage. . Names