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 5905-00-840-5281
NSN 6150-01-382-0617
NSN 5895-01-328-1614
NSN 6130-01-573-7232
NSN 5895-00-469-3142
NSN 6645-01-621-5424
NSN 5975-00-350-9289
NSN 6105-01-445-6574
NSN 6130-01-268-1703
NSN 6220-01-441-0508
NSN 5920-01-442-4937
NSN 5935-01-319-9865