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 5855-00-610-4052
NSN 7035-01-183-7550
NSN 5950-01-369-9476
NSN 4140-01-372-7557
NSN 4140-00-491-7699
NSN 6110-00-260-0130
NSN 5965-01-627-3702
NSN 5905-01-348-6475
NSN 6145-01-377-5130
NSN 6650-01-090-0719
NSN 6645-01-036-1182
NSN 5835-00-794-7500