Flow-Rite Couplers are made of high-grade UV resistant polypropylene, non-swell Viton O-rings and 305 stainless steel springs. The materials were selected for their aversion to corrosion and acidic degradation. Designed to handle the highest flow rate, the couplers have a pressure range of 0 to 100 psi, with a temperature range of 32°F to 160°F. Compatible with CPC HFC12, HFC35 and HFC57 couplers, the product is also capable of gamma sterilization and can be easily disconnected with the ergonomic push-in button.