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 5985-01-468-6894
NSN 6150-01-076-4811
NSN 5935-01-386-3198
NSN 6220-00-494-1456
NSN 5910-00-417-0825
NSN 5998-00-647-1225
NSN 5998-01-422-3743
NSN 6650-01-227-0439
NSN 5935-01-248-9265
NSN 6145-00-060-0389
NSN 5915-01-438-6668
NSN 5920-00-322-2122