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 6650-00-419-4863
NSN 6320-00-186-6452
NSN 5855-01-417-3250
NSN 6610-00-997-6876
NSN 6645-01-423-9361
NSN 2925-00-984-7525
NSN 6220-01-384-2827
NSN 6620-00-113-9145
NSN 5910-00-637-2609
NSN 5950-01-629-8862
NSN 6645-00-020-2787
NSN 7035-00-849-5526