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 6645-00-596-5388
NSN 5985-01-571-3203
NSN 6320-00-284-1524
NSN 5985-01-007-6652
NSN 5990-00-818-3480
NSN 6685-01-007-0259
NSN 2925-00-555-4578
NSN 5935-00-403-0863
NSN 5950-00-779-0875
NSN 6645-00-149-1100
NSN 6105-00-698-0385
NSN 5999-01-566-7202