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 6135-00-577-8429
NSN 6685-00-095-1145
NSN 6150-01-351-5455
NSN 6130-01-557-1841
NSN 4140-01-442-8479
NSN 6130-01-391-4572
NSN 6620-00-280-2874
NSN 6685-01-563-8487
NSN 6110-01-076-9022
NSN 5920-01-390-8273
NSN 6105-01-254-2722
NSN 5945-01-492-2378