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 6135-00-850-3177
NSN 6130-00-950-6323
NSN 6645-01-514-3353
NSN 6110-01-380-0160
NSN 6320-01-382-9676
NSN 5935-01-208-4832
NSN 4140-01-582-5107
NSN 5935-01-099-4991
NSN 5975-01-433-6435
NSN 6645-00-070-4543
NSN 6240-00-689-6379
NSN 5945-00-100-6269