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 6685-01-239-2346
NSN 5920-00-045-4211
NSN 5895-01-439-6997
NSN 5930-00-382-7716
NSN 6240-01-588-3477
NSN 5915-01-090-3955
NSN 5960-01-376-3880
NSN 6220-00-222-7426
NSN 6620-01-004-7072
NSN 6105-00-370-0261
NSN 5965-01-520-3356
NSN 6130-00-318-3590