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 5905-00-085-4486
NSN 6105-01-507-5260
NSN 6610-01-094-8442
NSN 5960-01-530-0581
NSN 6220-00-900-5302
NSN 5985-01-561-0294
NSN 6685-00-626-4296
NSN 6105-01-139-2822
NSN 5998-01-292-5528
NSN 6610-00-296-5007
NSN 5975-01-388-2752
NSN 5990-01-436-7191