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 5935-01-389-3567
NSN 5905-00-175-5934
NSN 5975-01-303-8374
NSN 6130-01-196-4545
NSN 5915-01-461-3552
NSN 2925-01-628-7580
NSN 5910-01-479-3830
NSN 6685-01-350-0823
NSN 5960-01-100-4454
NSN 6240-01-054-2289
NSN 5920-00-979-8106
NSN 6240-01-256-9869