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 6620-00-477-7808
NSN 6685-00-037-9635
NSN 6145-01-362-3374
NSN 6135-01-054-2462
NSN 5960-01-134-0828
NSN 2925-01-309-5007
NSN 5965-01-201-8399
NSN 5855-01-471-7836
NSN 6620-01-386-5543
NSN 6110-00-257-1446
NSN 5960-00-261-6512
NSN 5960-00-257-4203