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 6620-01-232-0680
NSN 5975-01-591-4092
NSN 5950-00-275-9257
NSN 6645-00-736-0476
NSN 6645-01-484-9847
NSN 5975-01-389-8950
NSN 6130-01-127-5738
NSN 5935-00-579-0102
NSN 6130-01-437-8855
NSN 5935-00-992-9590
NSN 6650-00-677-2577
NSN 6110-00-436-1518