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 5910-00-862-3156
NSN 6145-00-935-8783
NSN 5855-01-468-3689
NSN 5945-01-161-4615
NSN 5835-00-345-9516
NSN 5999-01-058-1528
NSN 6130-01-094-9827
NSN 6240-00-456-2578
NSN 5905-01-394-5195
NSN 6220-01-103-3059
NSN 4140-01-386-5630
NSN 6240-01-139-3377