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 6610-01-170-2905
NSN 6145-00-702-8816
NSN 5990-01-493-4039
NSN 5915-01-567-3777
NSN 5905-01-449-4302
NSN 5920-00-006-1919
NSN 6135-00-240-3200
NSN 5965-01-164-7982
NSN 6130-01-442-0680
NSN 4140-01-141-6526
NSN 6145-01-117-5975
NSN 6240-00-079-0112