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 5935-00-166-8520
NSN 2925-01-574-7119
NSN 5855-01-321-3881
NSN 6240-01-226-8866
NSN 5999-01-553-2185
NSN 5895-00-716-2798
NSN 6650-01-646-0139
NSN 5920-00-105-5574
NSN 5905-01-049-3659
NSN 5985-01-407-2494
NSN 5925-00-019-9047
NSN 4140-00-690-5288