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 6130-00-226-0417
NSN 6110-01-134-9667
NSN 5990-01-110-8979
NSN 5999-01-540-5875
NSN 5960-01-172-2088
NSN 5985-01-428-9964
NSN 6220-01-498-1369
NSN 5996-01-175-4838
NSN 6220-00-283-5050
NSN 5975-00-715-3710
NSN 6620-00-189-0967
NSN 5935-01-118-6310