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 5975-01-412-4237
NSN 5990-01-355-4694
NSN 5895-00-004-1322
NSN 6110-00-986-7228
NSN 6240-01-312-9158
NSN 5945-01-573-1970
NSN 6105-00-294-7431
NSN 5998-01-009-8858
NSN 6110-00-826-0394
NSN 5998-01-023-5079
NSN 6150-01-474-6294
NSN 6220-00-988-5311