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 5975-01-513-8763
NSN 5930-00-356-5003
NSN 6610-01-317-4859
NSN 5920-00-992-1820
NSN 6220-01-641-8494
NSN 6685-01-598-4497
NSN 6135-00-078-9931
NSN 6320-01-445-5893
NSN 5895-00-805-9179
NSN 5895-01-014-7053
NSN 5998-01-435-4195
NSN 6135-00-938-1351