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 6320-00-636-0922
NSN 6135-01-255-4786
NSN 5998-01-202-8266
NSN 5910-01-493-1625
NSN 6105-01-398-0814
NSN 5855-01-222-6065
NSN 5925-01-433-2535
NSN 6130-01-580-5483
NSN 6240-01-417-1933
NSN 5895-01-432-2464
NSN 6320-01-171-3238
NSN 6105-00-453-3445