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 5925-01-634-0664
NSN 5925-01-407-3721
NSN 5935-00-767-8219
NSN 5999-01-090-9014
NSN 6220-00-376-2193
NSN 6320-01-326-1316
NSN 5999-01-030-9829
NSN 5999-00-036-6162
NSN 5905-00-203-3929
NSN 5965-01-023-7095
NSN 5998-01-140-0944
NSN 5960-00-140-9583