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 5950-01-313-7074
NSN 5998-01-064-5785
NSN 6645-00-459-3313
NSN 6650-01-552-9076
NSN 5935-00-476-4656
NSN 6220-01-434-7506
NSN 5990-01-476-9956
NSN 6610-01-189-3001
NSN 6685-00-641-0189
NSN 6650-01-538-5879
NSN 6650-01-652-6067
NSN 4140-01-388-0835