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 6220-01-570-6975
NSN 5905-00-852-1144
NSN 5935-00-264-4149
NSN 6130-01-503-4116
NSN 6145-00-431-8376
NSN 5855-01-491-9064
NSN 6145-01-647-3020
NSN 5996-01-495-4331
NSN 6240-01-362-6051
NSN 5920-01-023-0040
NSN 6240-01-121-0469
NSN 5915-01-248-5276