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 5975-00-910-3461
NSN 5985-00-252-2296
NSN 6145-01-409-1685
NSN 6105-01-615-8060
NSN 5965-00-100-1291
NSN 5960-01-360-3639
NSN 5999-00-295-6285
NSN 6240-00-068-5543
NSN 5998-01-500-1324
NSN 5910-01-204-7223
NSN 5855-00-149-0766
NSN 7035-01-371-0091