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 5975-01-010-6243
NSN 6150-01-118-7680
NSN 6610-01-364-0294
NSN 5935-00-299-0170
NSN 5985-01-024-9640
NSN 5960-01-341-5198
NSN 6135-00-947-0406
NSN 5975-01-175-3854
NSN 6240-01-507-3609
NSN 5950-00-473-8683
NSN 4140-01-564-7065
NSN 5835-00-571-8866