Protective diaphragm, For use with: M22(S)-D(R)-…, M22(S)-DL-…, M22(S)-DRL-…, M22(S)-L(C)-…, transparent version for harsh environmental conditions and application in the food industry, Do not use in conjunction with M22S-ST legend plate mount, since degree of protection cannot be guaranteed, additional protection for pushbuttons, Silicone