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 5945-00-484-3291
NSN 6105-01-200-8131
NSN 5975-01-589-9909
NSN 5910-01-158-9050
NSN 5910-01-153-7486
NSN 6685-01-116-4526
NSN 5945-01-649-1372
NSN 6220-00-179-9104
NSN 6645-01-243-3138
NSN 5935-00-686-4007
NSN 6130-01-453-7648
NSN 4140-01-369-8734