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 5915-00-423-7196
NSN 6220-01-406-8157
NSN 5985-01-390-0645
NSN 4140-00-437-7858
NSN 5920-01-411-5316
NSN 6135-01-104-3790
NSN 6145-01-607-6165
NSN 5910-01-446-6477
NSN 6220-00-868-5651
NSN 6135-00-269-5843
NSN 6130-00-272-5351
NSN 5930-00-431-4999