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 6110-01-106-2708
NSN 5960-01-491-2993
NSN 6240-01-558-8446
NSN 5950-01-424-7267
NSN 6620-01-571-7727
NSN 5915-01-540-8469
NSN 6320-01-202-8761
NSN 5996-00-009-9343
NSN 6650-01-310-7403
NSN 5965-01-446-6945
NSN 6145-01-411-9054
NSN 5920-00-362-1376