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 4140-01-147-4513
NSN 5999-00-183-6689
NSN 5835-01-328-6626
NSN 5950-00-923-5160
NSN 4140-01-575-2364
NSN 6610-01-474-5206
NSN 5985-00-151-4538
NSN 6685-01-504-6085
NSN 6145-00-918-3187
NSN 5910-01-075-1113
NSN 6610-01-642-0258
NSN 6650-01-416-0473