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 6145-01-258-5828
NSN 6240-00-627-1493
NSN 5950-00-261-3678
NSN 4140-01-462-0268
NSN 6610-01-032-5335
NSN 5950-01-099-5014
NSN 5945-01-492-6208
NSN 6130-01-180-3176
NSN 6685-01-179-3099
NSN 5999-01-550-6756
NSN 5835-00-060-9889
NSN 5990-01-268-4268