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 5960-01-322-1945
NSN 5998-01-370-3379
NSN 6650-00-879-5834
NSN 5960-01-420-4744
NSN 5895-00-906-4640
NSN 6645-01-325-5605
NSN 5910-00-225-8400
NSN 6685-01-564-9421
NSN 6610-00-167-5109
NSN 5950-00-238-0217
NSN 6110-00-809-8087
NSN 5930-01-260-3836