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 6685-01-227-1710
NSN 5990-00-331-4459
NSN 5996-01-512-0800
NSN 5930-00-673-4550
NSN 6620-01-037-8468
NSN 6685-00-069-1371
NSN 5945-00-287-8022
NSN 5999-01-219-9028
NSN 5895-00-004-7536
NSN 5925-01-419-9833
NSN 6135-00-228-8140
NSN 5930-01-342-6244