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 5895-01-461-7998
NSN 5998-01-184-7874
NSN 5835-01-435-4139
NSN 6220-01-647-1608
NSN 6135-00-461-3590
NSN 5975-01-106-3595
NSN 6685-01-046-1332
NSN 5950-01-123-9661
NSN 6110-00-054-7278
NSN 6150-01-470-0067
NSN 6645-00-816-5337
NSN 6320-00-894-1644