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 5910-01-245-2264
NSN 2925-01-660-0669
NSN 5925-01-336-6885
NSN 6685-01-593-9173
NSN 5905-00-369-1644
NSN 6685-01-091-9727
NSN 5920-01-220-1911
NSN 6105-00-650-7455
NSN 6650-01-470-1315
NSN 5925-01-483-2007
NSN 6650-01-094-9378
NSN 6650-01-410-7526