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 5925-01-492-0838
NSN 5920-01-416-7692
NSN 6650-00-129-3261
NSN 4140-01-083-5870
NSN 5975-01-512-7065
NSN 6685-01-102-0852
NSN 6650-01-029-2995
NSN 5950-01-024-9461
NSN 5998-01-528-7851
NSN 5975-01-047-0069
NSN 5835-01-529-3050
NSN 5975-01-296-1452