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 6110-01-060-9514
NSN 5910-00-596-3179
NSN 6685-01-643-9145
NSN 5835-00-286-5432
NSN 5945-01-525-2918
NSN 5950-00-631-3071
NSN 5998-01-576-8467
NSN 6150-01-394-5316
NSN 5998-00-216-8107
NSN 5930-01-247-7548
NSN 6220-00-577-3435
NSN 6620-01-277-9325