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 6320-01-498-4954
NSN 5945-00-529-0409
NSN 5935-01-019-3736
NSN 6240-01-459-7827
NSN 5999-01-645-3049
NSN 5905-01-597-4774
NSN 6150-00-233-6356
NSN 6620-01-377-0414
NSN 4140-00-007-2627
NSN 5945-00-854-4635
NSN 6110-00-987-3675
NSN 2925-01-581-7478