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 6135-01-290-1594
NSN 5950-01-003-6669
NSN 5990-00-033-8128
NSN 5998-00-339-4148
NSN 6145-01-351-1935
NSN 6110-01-208-9923
NSN 6110-01-384-4292
NSN 5965-01-370-1891
NSN 5999-00-362-3332
NSN 6685-01-258-6205
NSN 5996-00-234-8003
NSN 6645-01-571-1234