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 6145-01-050-7531
NSN 5905-01-486-0041
NSN 6620-01-044-3371
NSN 5998-01-484-4393
NSN 6240-01-052-0485
NSN 5910-01-520-9071
NSN 5905-01-231-1294
NSN 5996-00-838-0687
NSN 5960-00-466-2258
NSN 5920-01-398-7123
NSN 5895-01-104-3125
NSN 5895-00-246-4415