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 5905-01-181-4885
NSN 6320-00-593-0379
NSN 5855-01-546-2190
NSN 4140-01-100-1223
NSN 5930-01-381-5528
NSN 6645-01-592-2557
NSN 6610-00-840-6187
NSN 5985-01-326-2439
NSN 6320-01-631-7828
NSN 2925-00-146-0179
NSN 5835-01-187-8986
NSN 6145-00-150-5049