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 6150-01-148-5885
NSN 5990-00-269-2226
NSN 5975-00-403-8561
NSN 6220-00-195-4655
NSN 5915-01-633-9845
NSN 4140-01-190-9731
NSN 5975-01-160-8617
NSN 6320-01-612-7035
NSN 5985-01-388-7020
NSN 6135-01-459-1239
NSN 5920-01-241-0566
NSN 6135-01-190-2628