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 5915-01-508-9350
NSN 6645-01-203-9542
NSN 5945-00-556-7942
NSN 6105-01-370-0549
NSN 5935-01-032-0851
NSN 5930-01-501-5144
NSN 6240-01-361-8797
NSN 6685-00-350-0624
NSN 6610-01-323-7783
NSN 5996-00-289-9847
NSN 5999-01-422-1676
NSN 6685-01-606-9171