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 6650-01-027-7165
NSN 5945-01-156-7745
NSN 7035-00-275-5604
NSN 5910-00-819-9223
NSN 4140-01-657-8063
NSN 5915-00-130-6562
NSN 6645-01-033-0150
NSN 5920-01-301-3837
NSN 5950-01-435-1395
NSN 5945-01-372-5181
NSN 5835-00-021-5913
NSN 5960-00-965-5577