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 5965-01-138-9288
NSN 4140-00-501-7833
NSN 5990-01-452-0911
NSN 5945-01-540-8808
NSN 6105-01-448-4701
NSN 6105-00-175-9078
NSN 5990-01-109-3879
NSN 4140-01-550-4627
NSN 5975-01-234-9254
NSN 5910-00-611-4945
NSN 5999-01-370-2746
NSN 6685-00-931-7790