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 5895-00-292-2872
NSN 5925-01-126-5278
NSN 5960-01-452-1907
NSN 5965-00-146-6561
NSN 4140-00-983-8048
NSN 6620-01-115-2926
NSN 6650-00-021-9555
NSN 6240-01-094-7717
NSN 6610-01-131-9133
NSN 5930-01-042-7325
NSN 5930-01-250-1549
NSN 5950-01-162-9070