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 5998-01-248-9063
NSN 5985-01-120-8871
NSN 6685-01-259-2596
NSN 6105-00-942-5246
NSN 6220-01-273-0177
NSN 6650-00-196-5311
NSN 6220-01-101-7317
NSN 6685-01-487-0540
NSN 5975-00-774-0056
NSN 5960-00-512-9121
NSN 5935-00-451-5062
NSN 6685-00-789-3404