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 5895-01-457-6475
NSN 5855-01-534-7940
NSN 5960-00-932-3067
NSN 4140-01-541-5738
NSN 6685-01-173-7866
NSN 5998-01-340-0731
NSN 5999-01-247-7289
NSN 5999-01-595-7116
NSN 6110-01-041-1631
NSN 5975-01-138-7413
NSN 5999-00-023-6105
NSN 4140-01-268-2898