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 5985-01-534-0247
NSN 5960-01-553-4557
NSN 5905-01-296-5317
NSN 6320-01-147-9177
NSN 6110-01-259-0789
NSN 5996-00-732-1875
NSN 5915-01-477-8641
NSN 5835-01-449-7511
NSN 4140-00-720-4993
NSN 5905-00-574-8084
NSN 5895-00-904-6440
NSN 6650-01-014-5990