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 5960-01-521-6865
NSN 5990-01-564-5031
NSN 5935-01-359-2065
NSN 5910-01-448-2324
NSN 5855-01-268-6468
NSN 6620-01-371-5040
NSN 6220-01-128-0087
NSN 6620-00-759-6646
NSN 5965-01-222-0166
NSN 2925-00-782-1498
NSN 6220-00-783-6178
NSN 5935-01-246-9637