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 2925-00-082-8219
NSN 6150-00-455-1331
NSN 6685-01-515-8537
NSN 5965-00-055-8013
NSN 6110-01-411-5166
NSN 5910-01-512-8782
NSN 5895-01-384-2219
NSN 5975-00-625-8155
NSN 6110-00-827-3026
NSN 5950-01-469-9442
NSN 5985-01-316-2007
NSN 5855-01-514-9857