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 5965-01-603-7959
NSN 6620-00-132-1151
NSN 5996-01-623-8237
NSN 5950-01-242-9896
NSN 5935-01-443-9152
NSN 5930-01-582-3734
NSN 5920-01-104-4332
NSN 5915-01-094-7427
NSN 6610-01-648-9997
NSN 5930-00-190-0295
NSN 6650-01-271-8239
NSN 5925-00-999-1710