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 6685-00-339-2207
NSN 5965-01-514-0932
NSN 6620-00-330-3728
NSN 6610-01-266-8691
NSN 6620-00-420-5542
NSN 2925-00-706-5902
NSN 6145-01-495-5425
NSN 6135-01-559-9637
NSN 6105-01-420-5624
NSN 6145-01-350-3532
NSN 6620-01-423-0833
NSN 6685-01-156-8030