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 6150-01-100-3413
NSN 6145-01-600-5656
NSN 6150-01-118-5302
NSN 5999-01-465-5836
NSN 6685-00-335-0207
NSN 6130-01-422-4258
NSN 6145-01-577-2077
NSN 5910-01-535-6551
NSN 6650-00-226-5320
NSN 6105-01-168-0664
NSN 6685-01-123-9275
NSN 5835-01-399-5820