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 6620-01-336-6646
NSN 4140-01-168-0661
NSN 6105-01-225-8000
NSN 2925-00-188-5003
NSN 6610-01-631-4355
NSN 5930-01-185-4437
NSN 5935-01-142-0048
NSN 5985-01-537-1698
NSN 6650-01-061-9101
NSN 6645-01-409-1529
NSN 6130-01-359-9321
NSN 5996-00-382-3597