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 5905-01-388-2939
NSN 5905-00-812-2762
NSN 5960-00-882-0183
NSN 6685-01-411-2717
NSN 6645-00-736-0476
NSN 6105-01-021-8491
NSN 2925-01-625-6841
NSN 6320-01-458-1853
NSN 6145-01-243-0123
NSN 5960-01-201-6316
NSN 5975-00-248-5590
NSN 6150-01-540-0853