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 5999-00-916-3871
NSN 6145-01-392-3238
NSN 5975-00-368-8648
NSN 6650-01-437-8852
NSN 5950-01-605-3104
NSN 5935-00-284-3984
NSN 6320-01-067-0474
NSN 5915-01-125-1484
NSN 5855-01-417-3250
NSN 5965-01-035-4975
NSN 5835-00-233-6327
NSN 5930-01-601-4443