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 5999-01-372-1182
NSN 6620-01-645-4148
NSN 6110-01-212-3261
NSN 5975-01-459-8006
NSN 6240-00-232-1093
NSN 2925-01-172-0176
NSN 4140-01-224-8715
NSN 6685-00-498-0072
NSN 6650-00-515-6002
NSN 6135-01-084-1609
NSN 5835-00-958-6231
NSN 5945-01-141-4734