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 5975-01-632-7184
NSN 5925-00-468-2757
NSN 6150-00-021-3337
NSN 5999-01-352-8861
NSN 6685-00-772-8853
NSN 6645-00-933-2170
NSN 5930-00-173-8364
NSN 5965-01-177-4872
NSN 5935-01-200-9790
NSN 5910-01-377-9956
NSN 6135-01-435-6503
NSN 5835-00-679-9769