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 6650-00-500-6455
NSN 6610-00-531-6153
NSN 5920-01-212-1536
NSN 5975-01-462-0269
NSN 5905-00-492-1599
NSN 6130-00-300-1689
NSN 6320-00-139-1090
NSN 5855-01-483-2346
NSN 5990-01-146-9126
NSN 5910-01-006-4185
NSN 6105-01-048-0701
NSN 5945-01-599-2020