Available in NPT inch and BSPT (metric) sizes, the push-to-connect male fittings are made with 316 stainless steel bodies and 303 stainless steel gripping collets with internal Viton o-ring, and can withstand pressures up to 290 PSI and temperatures up to 390° F. They are designed to stand up to harsh chemicals and washdown situations. These rugged fittings NITRA stainless steel fittings can be used with polyurethane, nylon and PTFE tubing among others.