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 5935-01-054-7401
NSN 5990-00-301-3386
NSN 5855-01-294-2804
NSN 5965-00-855-0285
NSN 5935-01-599-5373
NSN 5965-00-023-0944
NSN 6645-01-607-4078
NSN 5920-01-020-7659
NSN 6150-01-529-6368
NSN 5950-00-385-8906
NSN 5935-01-320-9943
NSN 6320-00-937-5625