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 6220-00-863-7838
NSN 5990-00-477-1362
NSN 5996-00-042-5682
NSN 5915-01-368-5668
NSN 6150-01-417-2164
NSN 5996-01-270-1033
NSN 6145-01-444-1668
NSN 5935-01-030-6286
NSN 4140-01-574-3955
NSN 5905-01-552-5038
NSN 5950-01-137-0072
NSN 5930-01-213-0348