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 5990-01-534-8609
NSN 5950-00-184-5963
NSN 5910-00-541-1381
NSN 5950-01-540-9939
NSN 5925-00-111-5063
NSN 6150-00-096-6477
NSN 6685-00-115-2255
NSN 6135-00-274-4037
NSN 6105-01-108-2427
NSN 6130-01-411-1678
NSN 6145-01-415-6127
NSN 6220-01-498-0420