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 6135-01-313-8323
NSN 6610-01-519-0997
NSN 5998-01-290-2957
NSN 6105-01-090-7491
NSN 5925-00-479-8233
NSN 4140-01-532-0302
NSN 6220-00-160-9372
NSN 5999-00-445-4043
NSN 5915-01-382-9383
NSN 5950-01-251-0599
NSN 5905-01-479-8526
NSN 6240-01-012-2706