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 6220-01-363-2762
NSN 5915-01-067-9129
NSN 5895-01-134-7460
NSN 6105-01-309-0084
NSN 5998-01-198-2203
NSN 6240-01-455-3786
NSN 5975-01-382-8542
NSN 6650-01-330-4857
NSN 6135-00-107-6662
NSN 6105-01-315-5138
NSN 5990-01-357-6175
NSN 6685-00-781-2865