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 5835-01-369-7837
NSN 5895-01-054-4368
NSN 4140-01-012-2460
NSN 6240-01-370-5818
NSN 6610-01-307-3192
NSN 5998-01-656-3535
NSN 5935-00-475-3143
NSN 5975-01-629-9491
NSN 5930-00-992-9516
NSN 6320-01-481-7322
NSN 5905-01-169-1512
NSN 6150-00-313-5164