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 5985-01-263-4482
NSN 6240-01-439-9544
NSN 6105-01-503-5539
NSN 6650-01-306-8352
NSN 4140-01-372-7632
NSN 6240-01-011-2267
NSN 6110-01-383-7520
NSN 5945-00-847-9837
NSN 5835-01-519-2916
NSN 6220-00-313-4386
NSN 5910-00-722-1135
NSN 6130-00-171-7400