Rubber Diaphragm Material can be NBR, EPDM, SILICONE, And others
Fabric Can be Polyester, Dacron, Nylon, Cotton, Nomex or Others
The black color is cheaper than other colors
Rubber shore A hardness can be from Shore A 30 to Shore A 90.
On this size list, The main Diaphragm is used for pneumatic regulator actuator and Control valve.
For more information, Please contact us for check.