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 6620-01-327-3011
NSN 6610-00-111-7312
NSN 7035-01-476-4085
NSN 4140-00-689-6123
NSN 4140-00-277-3131
NSN 6150-01-367-1923
NSN 5950-01-418-2398
NSN 6610-01-224-7247
NSN 6135-00-777-5562
NSN 5998-00-759-2574
NSN 5975-01-203-2774
NSN 5915-01-338-3556