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 6645-01-127-0039
NSN 7035-01-106-3476
NSN 5945-01-541-6279
NSN 5965-01-193-0420
NSN 6130-00-193-2421
NSN 5915-00-022-7795
NSN 5965-01-350-1890
NSN 5935-00-489-3432
NSN 5960-01-008-5670
NSN 2925-00-221-8529
NSN 6220-01-190-7542
NSN 6135-01-100-3593