MIL MIL-B-5423/15E

BOOT, DUST AND WATER SEAL, TYPE B (FOR TOGGLE AND PUSHBUTTON SWITCHES, CIRCUIT BREAKERS, AND ROTARY-ACTUATED PARTS) (FOR HANDSET SWITCHES), STYLE 5 (SUPERSEDING MIL-B-5423/15D) (S/S BY MIL-DTL-5423/15F)
standard by Military Specifications and Standards, 10/11/1985