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 6110-01-584-5596
NSN 5999-00-926-3241
NSN 5930-00-557-8177
NSN 5990-00-212-4316
NSN 5910-00-161-1647
NSN 5905-01-231-3116
NSN 5975-01-553-9485
NSN 5960-00-400-7693
NSN 5935-01-273-2006
NSN 5910-00-292-0048
NSN 5920-00-081-0537
NSN 5998-01-054-2847