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 5960-00-644-4982
NSN 6135-00-274-4037
NSN 6610-01-579-2984
NSN 5920-00-110-1152
NSN 5998-01-365-7797
NSN 5920-01-611-6299
NSN 6685-00-336-3135
NSN 6150-00-922-1425
NSN 5996-00-204-6364
NSN 6105-01-274-7426
NSN 5985-00-984-4533
NSN 7035-00-059-7970