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 5895-01-486-4265
NSN 5855-00-779-2854
NSN 4140-00-551-3151
NSN 5990-00-613-2279
NSN 6620-01-201-7601
NSN 5965-01-455-3738
NSN 6240-01-200-7937
NSN 5925-01-269-9002
NSN 5965-01-350-1890
NSN 5910-01-503-2822
NSN 5945-01-605-1480
NSN 5920-01-309-5480