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 5950-00-848-9057
NSN 5998-01-029-4210
NSN 5855-00-198-3197
NSN 5910-01-188-1831
NSN 6110-01-013-9313
NSN 5996-01-414-5167
NSN 5965-00-275-0491
NSN 6110-01-478-9941
NSN 6130-00-107-8839
NSN 5996-00-493-9976
NSN 6645-01-566-3205
NSN 6240-00-533-1493