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 6150-00-033-6739
NSN 5985-01-597-8935
NSN 5925-01-602-8786
NSN 5945-01-316-1767
NSN 5945-01-118-2681
NSN 6645-01-037-9125
NSN 5895-01-271-5755
NSN 5915-01-284-5658
NSN 5965-00-153-5216
NSN 6135-01-550-4792
NSN 5855-01-221-4076
NSN 6105-00-448-6927