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 6645-00-303-7698
NSN 5945-01-194-5167
NSN 6130-01-188-7411
NSN 5925-00-290-4451
NSN 5905-01-598-7121
NSN 6685-00-061-1797
NSN 5999-01-253-5784
NSN 5960-01-115-5328
NSN 6150-01-223-2304
NSN 5985-00-501-7816
NSN 5905-01-208-3675
NSN 2925-01-603-6379