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 6620-00-407-0102
NSN 5950-01-598-4441
NSN 5998-01-103-3415
NSN 5935-01-411-9849
NSN 6130-01-537-0624
NSN 5945-01-580-6831
NSN 6320-01-160-7757
NSN 5975-01-524-6951
NSN 5999-01-334-4438
NSN 5975-01-441-4645
NSN 5990-01-312-2638
NSN 5965-01-588-7092