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 2925-01-189-4272
NSN 5960-01-553-4557
NSN 6110-01-029-9619
NSN 5985-01-200-0506
NSN 5935-00-844-2741
NSN 2925-01-197-7864
NSN 5925-01-100-0970
NSN 7035-00-215-3272
NSN 6685-01-161-5025
NSN 6110-01-600-1223
NSN 5915-00-227-7098
NSN 6105-00-816-8496