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 6150-01-094-8515
NSN 5930-00-702-4692
NSN 4140-01-406-3292
NSN 4140-00-951-3093
NSN 6645-01-277-9337
NSN 6130-01-453-1986
NSN 5895-01-529-9860
NSN 6620-01-395-5214
NSN 6320-01-607-1491
NSN 5905-01-340-2182
NSN 5910-00-473-3470
NSN 5835-00-411-6344