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 6650-01-449-7699
NSN 6650-01-226-4819
NSN 6220-01-152-3346
NSN 6645-01-469-2458
NSN 5855-00-167-7893
NSN 6220-01-009-1688
NSN 5835-01-132-7972
NSN 6110-00-148-8536
NSN 5998-00-155-6002
NSN 5998-00-312-3060
NSN 2925-01-140-1015
NSN 6240-01-499-2579