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 5950-00-610-0553
NSN 6610-01-408-1134
NSN 5985-01-181-6681
NSN 6130-01-065-0541
NSN 5915-01-205-6152
NSN 5935-00-655-4427
NSN 6150-01-516-2569
NSN 5835-01-424-0054
NSN 5925-00-451-2061
NSN 5950-00-696-2267
NSN 6610-01-447-2560
NSN 6610-01-328-3400