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 5985-01-375-2649
NSN 6110-00-246-3941
NSN 5998-01-513-6652
NSN 6610-00-633-4338
NSN 5950-00-205-2932
NSN 6645-00-376-4829
NSN 5985-01-063-7186
NSN 4140-01-426-8428
NSN 6145-01-530-1134
NSN 6645-01-477-9292
NSN 5965-00-644-0339
NSN 6150-00-142-9142