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 5855-00-149-0766
NSN 6320-01-317-3663
NSN 5945-01-577-6414
NSN 2925-00-660-8131
NSN 5935-01-157-8437
NSN 5915-01-269-3476
NSN 5950-00-067-7753
NSN 5950-01-396-9770
NSN 5920-01-634-0250
NSN 5895-00-596-8678
NSN 5925-01-364-9184
NSN 6135-00-782-6988