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 5930-01-313-4464
NSN 5835-00-632-8621
NSN 5915-01-190-9476
NSN 6620-01-378-5579
NSN 7035-01-394-3169
NSN 5945-00-755-0201
NSN 5990-01-097-4721
NSN 6220-00-494-1600
NSN 4140-01-543-2637
NSN 5985-00-242-4462
NSN 6130-00-903-3578
NSN 7035-00-371-7749