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 6610-01-253-9180
NSN 6610-01-111-3750
NSN 5990-01-200-2800
NSN 5930-00-267-6848
NSN 6220-00-383-9402
NSN 6220-01-095-8125
NSN 6110-01-220-2918
NSN 6150-00-619-1711
NSN 5855-01-425-6340
NSN 6145-01-274-6190
NSN 6110-01-463-6986
NSN 5905-01-598-8294