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 6110-01-263-3744
NSN 6135-01-586-9728
NSN 5996-00-875-4967
NSN 5960-00-254-4271
NSN 5895-01-458-6638
NSN 5925-01-321-8829
NSN 5895-01-634-0630
NSN 6150-01-569-0387
NSN 6145-01-196-5211
NSN 5905-00-726-4415
NSN 6685-01-227-6785
NSN 5975-01-477-8063