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 6320-01-631-7828
NSN 5999-00-704-2878
NSN 5905-00-960-2616
NSN 6645-01-242-9699
NSN 6645-00-857-0410
NSN 5960-01-068-4003
NSN 6135-01-029-9315
NSN 5960-00-490-0138
NSN 5985-01-424-1097
NSN 5975-01-572-7340
NSN 6220-00-470-6828
NSN 5990-01-365-6016