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 6685-00-729-6498
NSN 5925-01-372-0863
NSN 5835-00-673-2885
NSN 5985-01-038-8011
NSN 5999-00-075-3496
NSN 5920-00-319-4652
NSN 7035-01-271-1643
NSN 5895-00-514-2905
NSN 6240-01-076-1793
NSN 5925-00-886-5440
NSN 5975-00-923-5227
NSN 5965-01-413-9205