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 5905-01-050-4466
NSN 5975-01-065-0985
NSN 5960-01-328-8248
NSN 6610-01-331-6966
NSN 5835-01-597-4820
NSN 5996-00-466-3099
NSN 6650-01-280-9353
NSN 5999-00-204-5241
NSN 5950-01-250-1762
NSN 6650-01-656-9398
NSN 6620-00-811-7614
NSN 2925-01-131-0473