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 5975-00-406-4753
NSN 6150-01-491-0482
NSN 5855-01-657-7657
NSN 5910-01-012-1831
NSN 5999-00-052-9583
NSN 6320-01-564-0893
NSN 5985-01-434-2570
NSN 6110-01-648-2637
NSN 5999-01-116-2198
NSN 6645-00-961-5477
NSN 6650-00-074-0131
NSN 6610-00-664-2190