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 6145-01-246-3988
NSN 2925-01-353-3928
NSN 5950-00-441-7921
NSN 6130-00-156-7751
NSN 6320-01-029-4220
NSN 5996-01-655-6759
NSN 6620-00-899-6403
NSN 6110-01-319-2687
NSN 5835-01-468-0579
NSN 6150-01-478-6963
NSN 2925-01-608-6895
NSN 6220-01-231-9813