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 7035-01-546-0059
NSN 6645-00-904-2754
NSN 5999-00-756-0839
NSN 4140-01-034-1135
NSN 5990-01-024-9659
NSN 6145-01-611-6822
NSN 6645-00-754-4108
NSN 5996-01-426-8531
NSN 6220-00-469-3292
NSN 6220-01-628-4370
NSN 5905-00-432-3198
NSN 5975-01-003-8937