A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 6685-00-035-6852
NSN 6320-00-788-5297
NSN 5855-00-548-4742
NSN 6240-00-578-7894
NSN 6240-01-143-0397
NSN 5996-01-209-5886
NSN 6610-00-173-4011
NSN 5975-01-634-0678
NSN 5996-01-247-7671
NSN 2925-01-424-0235
NSN 6145-01-461-9925
NSN 7035-01-138-3698