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 5835-01-541-9991
NSN 5950-01-304-1353
NSN 6610-01-233-0949
NSN 6145-00-199-8066
NSN 5998-01-305-8537
NSN 5925-00-867-9928
NSN 6135-01-589-0333
NSN 2925-01-327-3069
NSN 5915-01-353-6609
NSN 4140-01-633-7770
NSN 5920-00-269-6178
NSN 5985-01-400-0882