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 5895-01-370-4216
NSN 5930-00-024-4237
NSN 4140-01-298-8919
NSN 5925-01-378-2914
NSN 5895-01-070-8055
NSN 5950-00-074-4637
NSN 5855-00-138-2386
NSN 6130-00-502-3196
NSN 6150-01-533-4977
NSN 5996-00-117-4337
NSN 6150-00-169-8558
NSN 6650-00-539-7298