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 5835-01-454-5267
NSN 5935-01-146-5799
NSN 6620-00-280-2874
NSN 5975-00-905-0951
NSN 5950-00-255-3333
NSN 6645-01-422-3510
NSN 6650-01-065-1704
NSN 5990-00-838-1082
NSN 6610-01-023-1918
NSN 5835-01-031-7265
NSN 6620-00-557-7008
NSN 6150-01-652-7823