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 6610-01-092-7554
NSN 6645-01-616-5583
NSN 5930-00-771-8555
NSN 5960-01-376-1726
NSN 6135-00-603-4859
NSN 5855-00-821-7512
NSN 7035-01-472-1999
NSN 5835-01-332-2867
NSN 5985-01-604-1452
NSN 5835-00-491-6075
NSN 6145-01-329-9634
NSN 6645-00-724-7668