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 6645-01-270-3176
NSN 6145-01-124-0035
NSN 5930-01-306-7444
NSN 5960-00-690-7202
NSN 5960-01-286-1893
NSN 5855-01-461-8169
NSN 5950-00-004-0801
NSN 5999-00-911-4621
NSN 5999-01-137-2362
NSN 5905-00-487-2858
NSN 5950-01-424-6048
NSN 4140-01-413-3924