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 5950-01-312-1860
NSN 5960-01-370-4285
NSN 6650-00-957-9985
NSN 6220-01-344-5014
NSN 5996-01-232-0067
NSN 5905-01-138-6261
NSN 5945-00-752-5929
NSN 5905-00-932-4240
NSN 5998-01-131-1846
NSN 5895-01-308-6940
NSN 6240-01-206-7882
NSN 5990-01-499-6930