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 5965-01-256-9460
NSN 5895-01-475-9837
NSN 6685-01-438-3349
NSN 6150-00-835-5587
NSN 6220-01-564-9200
NSN 5975-01-423-0255
NSN 5996-00-993-0841
NSN 6240-01-359-6024
NSN 5835-00-868-8815
NSN 6220-01-010-8242
NSN 6150-00-954-2894
NSN 6240-00-089-8364