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 5935-00-616-2809
NSN 6620-01-291-8821
NSN 6150-01-487-3830
NSN 6150-01-068-3787
NSN 6130-01-088-6552
NSN 5855-00-167-7893
NSN 6150-01-197-6873
NSN 6645-01-252-8870
NSN 5935-01-036-8120
NSN 6620-01-611-7907
NSN 5998-01-424-0606
NSN 5975-01-634-0678