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 5895-01-634-0630
NSN 6145-00-864-7881
NSN 5990-01-316-0989
NSN 6240-00-518-3541
NSN 5915-01-422-1861
NSN 6150-00-828-6024
NSN 5999-01-649-1451
NSN 2925-01-197-7864
NSN 5975-01-641-9991
NSN 5855-01-100-3272
NSN 5950-01-015-8400
NSN 5835-00-327-6192