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 6650-01-290-4001
NSN 5985-00-933-6675
NSN 5920-01-615-4233
NSN 6610-00-186-9180
NSN 6145-01-409-1034
NSN 6145-00-241-1770
NSN 6320-01-407-4411
NSN 5855-01-391-7472
NSN 5975-00-173-1810
NSN 5935-00-104-7528
NSN 5935-01-491-2295
NSN 6110-01-224-9888