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 5905-00-398-0778
NSN 5935-01-200-7948
NSN 5935-01-145-2194
NSN 5990-00-442-7603
NSN 6650-01-305-8881
NSN 6240-00-553-8891
NSN 5985-01-057-1876
NSN 5990-00-513-5328
NSN 5930-01-212-2787
NSN 5999-01-435-3870
NSN 2925-01-472-4423
NSN 5965-01-158-1522