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 6240-01-469-2957
NSN 5950-01-265-0880
NSN 5930-01-277-6628
NSN 6610-00-131-8817
NSN 5910-01-507-2360
NSN 4140-01-021-5674
NSN 6240-01-327-4193
NSN 5855-01-585-4125
NSN 6320-00-336-9123
NSN 6220-01-056-0774
NSN 5950-01-092-5591
NSN 5910-00-189-1496