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 5895-01-225-5668
NSN 5960-01-538-2082
NSN 5996-00-505-3693
NSN 4140-01-538-9660
NSN 6110-00-161-9444
NSN 6110-00-399-0737
NSN 5985-01-284-6306
NSN 5999-00-446-1618
NSN 6620-00-697-1398
NSN 6610-01-455-0290
NSN 6130-01-369-1188
NSN 4140-01-648-2249