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 6240-00-168-1474
NSN 5930-00-189-8672
NSN 5895-00-465-6273
NSN 5960-01-380-0885
NSN 6320-01-215-2284
NSN 6320-01-326-1316
NSN 5990-01-036-1631
NSN 6130-00-103-0154
NSN 5855-00-472-2055
NSN 5915-01-540-0051
NSN 5855-00-247-7219
NSN 5835-00-958-6231