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 6110-00-255-2025
NSN 6610-00-052-8020
NSN 5910-01-029-2290
NSN 6240-01-123-8822
NSN 5925-01-146-9641
NSN 5960-00-468-2952
NSN 5920-01-351-7936
NSN 5920-01-049-1275
NSN 6645-00-052-7288
NSN 6610-00-155-1334
NSN 6105-00-690-2061
NSN 5935-01-634-0668