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 6110-00-474-5137
NSN 5835-00-825-2512
NSN 6320-01-495-1244
NSN 5835-00-491-3834
NSN 6610-01-237-5815
NSN 2925-01-100-3694
NSN 5990-01-378-7349
NSN 5915-00-974-9337
NSN 5998-01-329-1705
NSN 5925-00-186-8669
NSN 5998-01-168-4843
NSN 6620-01-503-6576