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 5996-00-601-6690
NSN 6130-00-299-6920
NSN 6150-01-084-5045
NSN 6610-01-193-8861
NSN 5910-00-370-0259
NSN 6105-00-987-7935
NSN 5925-00-453-5892
NSN 5965-01-424-1096
NSN 6150-01-424-0508
NSN 6620-01-048-4145
NSN 6645-01-095-9681
NSN 6105-01-359-9146