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 6320-01-600-5808
NSN 6105-01-311-5629
NSN 5835-01-085-5487
NSN 5985-00-740-7154
NSN 5999-00-177-3383
NSN 5998-01-416-9338
NSN 2925-01-157-9204
NSN 5920-01-388-7293
NSN 5915-00-959-4379
NSN 5895-01-545-6640
NSN 6110-01-522-2353
NSN 5996-01-056-7011