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 5945-01-058-2372
NSN 2925-00-993-7715
NSN 2925-01-280-1911
NSN 6240-01-416-3713
NSN 5950-01-329-4537
NSN 6145-01-032-4557
NSN 6320-01-616-0843
NSN 5950-00-682-0743
NSN 5930-01-608-3150
NSN 6220-00-538-8967
NSN 5985-01-403-2835
NSN 5945-01-238-4411