Teflon gaskets have the widest temperature range but they can be harder to get a good seal when compared to silicone and EPDM. Teflon gaskets are primarily used where the fitting may need to be rotated in place, such as a rotating racking arm.
ForgeFit® is a brand of rugged, high-quality fittings made from certified 304 stainless steel. Each fitting is backed by a 60-day no-hassle return policy and a one-year warranty.