Weir A Type Spare Rubber Diaphragms are available in sizes 1/2″ to 12″ in the foll materials :
1) PTFE with EPDM Rubber backing (Screw or Pin Type Bayonet Connection)
2) PTFE with Neoprene Rubber backing (Screw or Pin Type Bayonet Connection)
3) PTFE with Butyl Rubber backing (Screw or Pin Type Bayonet Connection)
4) PTFE with Viton Rubber backing (Screw or Pin Type Bayonet Connection)
5) EPDM Rubber (Screw Stud Type Connection)
6) Neoprene Rubber (Screw Stud Type Connection)
7) Hypalon* Rubber (Screw Stud Type Connection)
8) Natural Rubber (Screw Stud Type Connection)
9) Chlorobutyl Rubber (Screw Stud Type Connection)
10) Buna N Rubber (Screw Stud Type Connection)
11) Viton* (Screw Stud Type Connection)
* Viton and Hypalon are registered trademark of E.I. DuPont (Chemours)
Sealing ribs on the diaphragms wetted face provide enhanced leak tight sealing capabilities and lower closure torques