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 5925-01-186-6344
NSN 5915-00-686-9149
NSN 4140-01-473-8683
NSN 5999-01-468-9627
NSN 5905-00-983-6014
NSN 5960-01-339-3037
NSN 6610-01-436-2803
NSN 5835-01-385-0579
NSN 6135-01-132-6310
NSN 5975-00-718-6039
NSN 5945-01-628-8134
NSN 5999-01-076-4692