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 5930-01-577-2804
NSN 5930-01-601-1841
NSN 6620-01-364-0195
NSN 5950-01-374-3372
NSN 6685-00-561-9374
NSN 6650-00-590-9073
NSN 5920-01-156-8517
NSN 6620-01-256-9703
NSN 6135-00-635-5217
NSN 6145-01-347-0320
NSN 5950-00-526-0658
NSN 6135-00-635-9187