MIL MIL-DTL-5423/15F

BOOT, DUST AND WATER SEAL, TYPE B (FOR TOGGLE AND PUSHBUTTON SWITCHES, CIRCUIT BREAKERS, AND ROTARTY-ACTUATED PARTS) (FOR HANDSET SWITCHES), STYLE 5 (SUPERSEDING MIL-B-5423/15E)
standard by Military Specifications and Standards, 05/12/2004