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 5990-01-499-6930
NSN 6650-01-522-6525
NSN 5925-01-210-8875
NSN 2925-00-533-6262
NSN 7035-01-304-4138
NSN 5920-00-259-7294
NSN 5985-01-157-9426
NSN 5905-00-454-8310
NSN 5835-00-309-2373
NSN 6135-00-269-5843
NSN 5960-00-431-5263
NSN 6645-01-194-6594