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 6240-00-226-0462
NSN 5998-00-221-5760
NSN 6240-01-573-7036
NSN 5950-00-260-0623
NSN 5975-00-780-0792
NSN 5975-01-626-1631
NSN 5935-01-287-9334
NSN 6645-01-514-3353
NSN 5950-00-816-9913
NSN 5920-01-384-3387
NSN 5950-00-280-7825
NSN 6685-00-203-4485