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 6110-01-467-9915
NSN 5985-01-187-5815
NSN 7035-00-631-3782
NSN 5925-01-566-6828
NSN 6610-00-146-3499
NSN 5999-00-111-7160
NSN 5985-00-100-0140
NSN 5855-00-130-5756
NSN 2925-00-343-3235
NSN 5915-01-235-6318
NSN 5985-00-052-8925
NSN 5990-01-457-7786