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 5930-01-334-4928
NSN 5855-01-147-4785
NSN 5855-01-277-1663
NSN 6220-00-127-5660
NSN 6110-01-501-4216
NSN 6610-00-960-7863
NSN 5910-01-194-9782
NSN 4140-01-025-1555
NSN 5945-00-931-6314
NSN 4140-01-231-0742
NSN 6240-01-256-8132
NSN 6130-00-119-1528