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 6150-00-009-4226
NSN 5910-00-286-4416
NSN 6685-01-278-5938
NSN 5895-00-721-4032
NSN 6220-01-401-5337
NSN 5985-01-050-6703
NSN 5920-01-383-7108
NSN 5935-01-222-8718
NSN 5925-01-437-9172
NSN 6240-01-610-4663
NSN 6130-01-645-4969
NSN 6240-01-131-9580