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 5925-01-434-3687
NSN 5996-01-310-0162
NSN 6610-01-601-5019
NSN 6135-00-676-5807
NSN 6650-00-775-6560
NSN 5996-01-042-0789
NSN 5975-00-926-3073
NSN 5975-01-173-0332
NSN 5990-00-905-1303
NSN 5965-00-300-8055
NSN 5920-01-540-4595
NSN 5985-00-800-5438