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 5985-00-218-1356
NSN 6620-00-255-5962
NSN 6650-00-735-6611
NSN 6320-01-607-1491
NSN 5855-01-489-5808
NSN 6645-01-596-6077
NSN 5935-01-606-1460
NSN 6110-01-333-3596
NSN 5975-01-198-2612
NSN 4140-01-388-1304
NSN 6685-01-419-0909
NSN 6240-00-985-3316