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 6320-00-313-9114
NSN 5920-01-631-6494
NSN 6110-00-943-7836
NSN 6135-01-504-4744
NSN 5905-01-343-0275
NSN 5975-01-543-9320
NSN 6220-01-626-0513
NSN 5855-01-213-3267
NSN 6240-01-304-4741
NSN 5930-00-828-1762
NSN 5998-01-513-6975
NSN 6105-01-529-8532