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 6150-01-339-9145
NSN 6685-00-872-4593
NSN 5990-01-493-4039
NSN 5905-01-394-5961
NSN 5920-01-649-7794
NSN 5950-01-634-0677
NSN 5990-00-518-0684
NSN 6105-00-935-5256
NSN 5950-00-011-9729
NSN 5835-00-453-1969
NSN 5930-01-592-7418
NSN 5905-01-005-8340