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 5920-01-486-5492
NSN 6105-01-572-0271
NSN 5965-01-497-5961
NSN 5910-00-555-3003
NSN 5960-01-142-1995
NSN 5999-00-827-0169
NSN 6150-01-549-6388
NSN 5895-00-518-1593
NSN 5895-01-590-8254
NSN 5915-00-434-2300
NSN 6110-00-170-6520
NSN 6110-01-416-9480