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 5999-01-425-2319
NSN 5930-01-509-0280
NSN 6135-01-468-6491
NSN 6105-01-242-7969
NSN 6145-01-481-4195
NSN 5950-01-431-9818
NSN 6610-01-287-9814
NSN 6150-01-503-6969
NSN 5920-01-585-4209
NSN 5975-00-514-8614
NSN 6130-01-423-4170
NSN 6220-01-371-1791