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 5930-00-594-9442
NSN 6150-00-798-7004
NSN 6650-01-442-7893
NSN 6145-01-200-5020
NSN 6220-01-039-9872
NSN 6150-01-023-8352
NSN 5915-01-418-7221
NSN 5960-00-297-7099
NSN 6240-01-518-3874
NSN 5996-00-482-1170
NSN 5910-01-549-2456
NSN 5835-00-351-9459