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 5998-00-103-2723
NSN 5960-01-589-6846
NSN 5945-01-487-3598
NSN 6610-00-292-9895
NSN 5905-01-292-8086
NSN 5990-00-859-0790
NSN 5855-01-614-3391
NSN 6610-00-164-1510
NSN 5920-00-518-1793
NSN 6130-01-510-8572
NSN 6145-01-328-5284
NSN 5985-01-450-9782