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 6650-00-428-7055
NSN 5925-01-644-3020
NSN 6645-00-837-2267
NSN 5999-01-231-6512
NSN 5905-01-380-6355
NSN 5990-01-286-0601
NSN 6135-01-186-4010
NSN 5905-01-281-0630
NSN 5910-00-324-3201
NSN 5990-00-147-3144
NSN 5965-01-398-9579
NSN 5920-01-066-3709