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 5920-00-149-1469
NSN 5965-00-888-2643
NSN 5930-00-679-0870
NSN 5975-00-838-9322
NSN 5985-01-451-4309
NSN 5910-01-197-2848
NSN 5975-00-961-8910
NSN 5945-00-471-8456
NSN 5965-01-408-5990
NSN 5999-00-075-6495
NSN 5975-01-151-9144
NSN 5895-01-446-6374