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 5985-00-483-0981
NSN 6650-01-646-1643
NSN 6220-00-660-5539
NSN 5990-00-791-4064
NSN 5985-01-371-9904
NSN 5985-00-485-8441
NSN 5915-00-242-9819
NSN 5905-01-642-3638
NSN 6135-01-174-9195
NSN 6650-01-038-9079
NSN 6130-01-106-1511
NSN 5975-01-359-8503