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 6650-01-272-3727
NSN 5935-01-172-4292
NSN 5965-01-431-8147
NSN 6610-01-469-7873
NSN 5990-01-127-1108
NSN 6150-01-141-3935
NSN 5960-01-360-3639
NSN 5895-00-960-8029
NSN 6685-01-147-4532
NSN 6320-00-242-3300
NSN 6150-00-701-7880
NSN 6645-01-290-3930