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 5920-01-225-2000
NSN 5985-01-132-7016
NSN 6150-01-386-7597
NSN 5855-01-596-0879
NSN 5855-00-054-8617
NSN 5910-01-123-8137
NSN 5930-00-259-7150
NSN 5960-01-269-9073
NSN 5996-01-341-0828
NSN 5945-00-877-7449
NSN 6320-01-498-4954
NSN 6685-01-414-1904