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 4140-00-337-3606
NSN 6110-00-566-2113
NSN 5960-01-385-4333
NSN 5910-01-112-4786
NSN 6130-00-433-1229
NSN 5996-01-381-4440
NSN 5855-01-256-2551
NSN 5925-01-510-1138
NSN 6150-01-202-8214
NSN 5960-01-573-6483
NSN 5996-01-092-9873
NSN 6110-00-807-9508