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 6110-01-445-2840
NSN 5925-01-179-8556
NSN 5975-01-412-8253
NSN 6220-01-587-8437
NSN 6620-01-632-0394
NSN 5935-01-110-8299
NSN 6145-00-377-0971
NSN 6645-01-271-0248
NSN 6110-00-341-5463
NSN 6620-00-257-2783
NSN 5935-00-285-2767
NSN 5925-00-782-4742