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 5985-01-224-5865
NSN 5998-01-486-1232
NSN 6645-01-608-0586
NSN 5920-01-029-8173
NSN 5996-00-100-4932
NSN 5996-00-499-8036
NSN 5905-01-595-6989
NSN 4140-00-900-6102
NSN 6620-00-312-2036
NSN 5835-01-558-9444
NSN 5996-01-013-8528
NSN 5998-01-130-1099