A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6150-00-432-3311
NSN 6240-01-180-3720
NSN 2925-01-554-5246
NSN 6610-01-045-8249
NSN 5910-01-278-8504
NSN 6105-01-299-7789
NSN 5910-00-253-3992
NSN 2925-01-113-6904
NSN 5925-00-451-2061
NSN 5935-00-306-2222
NSN 6645-00-262-7448
NSN 6110-00-414-1624