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 4140-01-015-9283
NSN 6105-00-275-0826
NSN 6110-01-329-4732
NSN 6150-01-166-5290
NSN 5895-01-241-9924
NSN 6150-00-375-8786
NSN 5950-00-647-1160
NSN 5920-01-466-4500
NSN 6145-01-467-3244
NSN 6145-01-011-7132
NSN 5975-01-412-5860
NSN 5999-00-278-5563