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 7035-01-129-7834
NSN 6130-01-220-6331
NSN 5998-00-372-6047
NSN 5990-00-819-9949
NSN 6135-00-248-4102
NSN 5990-01-411-8548
NSN 6105-01-177-7476
NSN 4140-01-028-1882
NSN 7035-01-045-7202
NSN 6240-01-536-3604
NSN 5935-01-332-9916
NSN 2925-01-398-6751