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 6620-01-440-1579
NSN 6220-01-056-5169
NSN 2925-00-099-4030
NSN 6130-00-564-1230
NSN 5975-01-459-8112
NSN 5905-01-520-3276
NSN 5930-01-643-2354
NSN 5920-01-390-8273
NSN 5999-00-452-2558
NSN 5935-01-020-7578
NSN 5905-01-229-0246
NSN 5930-01-123-9688