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 5925-01-128-3582
NSN 5965-01-010-1258
NSN 5855-00-631-4565
NSN 5910-01-165-0746
NSN 5835-01-231-4994
NSN 6650-00-272-2271
NSN 5930-00-199-9608
NSN 5855-00-167-7893
NSN 5920-00-227-6586
NSN 6320-00-701-0437
NSN 6645-01-076-4655
NSN 5950-01-583-9877