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 5960-01-227-5245
NSN 5996-01-413-5037
NSN 5990-01-453-3552
NSN 7035-01-131-1168
NSN 6130-00-153-1338
NSN 6110-00-185-2021
NSN 6220-00-488-4332
NSN 4140-01-441-0691
NSN 5915-01-496-6094
NSN 5915-01-263-3448
NSN 6650-01-184-9238
NSN 5975-01-518-1592