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 6240-01-467-9719
NSN 6145-01-411-4757
NSN 5960-01-263-6781
NSN 6685-01-652-8845
NSN 6220-00-794-7834
NSN 5910-01-109-4662
NSN 6645-00-515-6148
NSN 5945-01-557-4769
NSN 6150-00-349-4790
NSN 6320-01-162-5977
NSN 5905-01-566-0943
NSN 6645-01-159-8787