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 5915-01-091-9434
NSN 6105-00-359-9243
NSN 6150-01-292-8839
NSN 5915-00-665-2854
NSN 5985-01-285-4719
NSN 5920-01-625-9604
NSN 5999-00-217-9976
NSN 5855-01-415-3987
NSN 6240-01-303-6174
NSN 5945-01-050-4068
NSN 6130-00-605-7887
NSN 5930-00-222-6187