The collet is produced in polypropylene with stainless steel teeth
About John Guest Fittings:
John Guest Quick Connect Fittings connect and disconnect without tools and never leak.
John Guest Fittings are reliable and easy to use.
John Guest fittings are NSF and ISO 9001 Certified and are trusted by the world’s largest manufacturers.
Now you can easily use John Guest fittings at home for a water tight seal every time.
We carry a large inventory of 1/4″, 3/8″ & 1/2″ fittings, valves & tubing.
Polypro fittings and their EPDM o-rings are more resistant to chemical degradation than the Grey Acetal Fittings which have been available for many years.