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 5960-01-090-8906
NSN 5895-01-388-6300
NSN 5835-01-461-8184
NSN 6240-01-261-4958
NSN 6240-01-472-2950
NSN 5998-00-193-9621
NSN 6645-01-409-2003
NSN 6620-01-337-8308
NSN 5990-01-082-3807
NSN 6105-00-967-8367
NSN 6105-01-162-0840
NSN 6135-00-577-8429