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 6220-00-969-1915
NSN 5985-01-333-7528
NSN 6240-01-054-0067
NSN 5998-00-216-3290
NSN 6610-01-053-3026
NSN 6135-01-255-9129
NSN 6320-01-173-7950
NSN 5930-01-479-9519
NSN 6105-00-153-7967
NSN 6105-00-844-3972
NSN 5950-00-414-7857
NSN 5895-01-634-0630