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 5855-00-288-1408
NSN 5960-01-324-3974
NSN 6685-01-122-1292
NSN 6130-01-027-7452
NSN 5905-01-216-5196
NSN 5925-01-026-5845
NSN 5965-00-799-5490
NSN 6685-00-815-5183
NSN 2925-01-290-8208
NSN 6320-01-202-8761
NSN 6110-01-398-6928
NSN 5945-01-285-7740