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 5930-01-583-0494
NSN 5905-01-013-8862
NSN 5960-00-451-4287
NSN 5925-00-368-1291
NSN 6610-00-518-4919
NSN 6150-01-262-3308
NSN 6610-01-655-8516
NSN 5999-00-843-3275
NSN 5950-01-203-8497
NSN 6135-01-238-2878
NSN 5925-00-126-6660
NSN 5950-01-607-4000