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 5910-00-424-3803
NSN 5895-00-406-7671
NSN 7035-00-834-2090
NSN 5895-01-142-3440
NSN 6620-01-454-5717
NSN 5975-01-369-6960
NSN 6320-01-651-7476
NSN 5930-01-660-9706
NSN 5945-00-470-2884
NSN 6110-00-858-6546
NSN 6130-01-280-4394
NSN 6150-00-444-7716