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 6220-00-420-1245
NSN 5985-00-174-0514
NSN 6105-00-171-6521
NSN 5999-00-519-5455
NSN 6645-00-853-0073
NSN 5950-00-170-9103
NSN 2925-00-450-7783
NSN 7035-01-137-3642
NSN 5895-01-333-9834
NSN 5835-01-319-4636
NSN 5930-00-135-0301
NSN 6240-01-400-4212