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 5999-00-243-9820
NSN 5935-00-687-2335
NSN 5930-01-212-3099
NSN 5999-01-264-8992
NSN 5855-01-431-8937
NSN 5930-01-236-5641
NSN 5996-01-132-3701
NSN 6610-01-353-1006
NSN 5895-01-430-4295
NSN 5920-01-187-6100
NSN 5975-01-011-1313
NSN 6105-00-855-7787