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 5960-01-094-9540
NSN 6610-01-103-4627
NSN 6240-01-068-3491
NSN 5975-01-573-9973
NSN 6220-01-110-9708
NSN 6135-01-505-1293
NSN 6620-00-943-0449
NSN 5905-01-139-4377
NSN 5945-00-395-2572
NSN 5920-01-221-3513
NSN 4140-01-605-1706
NSN 4140-00-587-7496