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 5960-01-357-1261
NSN 5985-01-431-7448
NSN 4140-01-177-1445
NSN 6110-00-889-1263
NSN 6685-00-204-6037
NSN 5960-01-327-0334
NSN 5945-01-269-2576
NSN 5855-00-149-0766
NSN 4140-01-462-2487
NSN 5905-01-464-9895
NSN 6150-01-541-9468
NSN 6150-01-419-0386