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 6105-01-281-2595
NSN 6620-01-100-0431
NSN 5925-01-323-0113
NSN 5975-00-660-5962
NSN 5935-01-135-8688
NSN 6650-01-340-1734
NSN 6645-01-357-4815
NSN 6610-00-526-8235
NSN 2925-00-540-9918
NSN 5835-01-099-8702
NSN 6135-01-038-6225
NSN 5835-01-321-7895