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 5935-01-552-6550
NSN 6145-00-826-3995
NSN 6130-00-262-0426
NSN 6650-01-529-0151
NSN 5910-00-818-8364
NSN 5945-00-403-0997
NSN 6105-01-634-0322
NSN 5835-00-830-6416
NSN 5990-01-240-1100
NSN 6145-01-427-3520
NSN 5915-01-501-7997
NSN 5985-01-338-3665