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 6620-01-544-8735
NSN 5960-01-516-7264
NSN 5930-01-038-2678
NSN 6110-01-360-5201
NSN 6145-01-444-4509
NSN 6145-01-332-6634
NSN 5895-00-545-8723
NSN 6145-00-880-6382
NSN 5905-01-113-6821
NSN 6105-00-683-1000
NSN 5996-01-479-2091
NSN 5925-01-501-7624