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 2925-01-254-3068
NSN 6105-00-285-2774
NSN 5990-00-045-7929
NSN 6240-01-593-4728
NSN 7035-01-571-8784
NSN 5905-01-178-6756
NSN 5950-01-645-6811
NSN 6685-01-142-8495
NSN 5905-00-638-6776
NSN 5910-00-840-5737
NSN 5990-01-226-6924
NSN 5950-01-200-6359