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 6110-01-633-9660
NSN 5998-01-099-6498
NSN 5925-00-232-3256
NSN 5996-00-926-7806
NSN 6240-00-564-7914
NSN 6620-00-233-6839
NSN 5999-01-423-0729
NSN 5965-01-222-0166
NSN 2925-01-138-8104
NSN 5835-00-143-4153
NSN 5960-00-091-8729
NSN 6620-01-659-1256