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 7035-01-163-8423
NSN 5925-01-333-2419
NSN 5945-01-239-4420
NSN 5935-01-577-2709
NSN 6110-00-927-1794
NSN 5998-00-623-6661
NSN 6610-00-462-6414
NSN 6645-00-503-1379
NSN 4140-01-119-8106
NSN 6610-01-172-9475
NSN 5950-00-933-4504
NSN 5996-01-375-4583