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 6610-01-310-0553
NSN 5950-00-432-6249
NSN 5855-00-411-8688
NSN 6105-00-922-6031
NSN 6645-01-352-5675
NSN 5990-00-269-2226
NSN 5985-01-288-6737
NSN 5930-00-912-3480
NSN 5910-01-537-0532
NSN 2925-01-226-6126
NSN 5930-01-593-2215
NSN 5925-01-095-1995