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 6130-01-227-5538
NSN 5930-00-660-3950
NSN 6610-01-488-8954
NSN 7035-01-629-4362
NSN 5930-01-400-6126
NSN 5985-00-762-5755
NSN 5945-01-094-3075
NSN 6610-00-433-2480
NSN 4140-01-428-7650
NSN 2925-01-497-9381
NSN 6240-01-317-1382
NSN 6240-01-437-6888