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 5930-01-415-1157
NSN 6645-01-105-9757
NSN 5985-00-580-4760
NSN 5925-01-100-0970
NSN 5915-01-331-5097
NSN 5915-00-838-1891
NSN 6130-01-458-3987
NSN 6320-01-236-9562
NSN 5945-01-179-0271
NSN 5945-01-561-6095
NSN 5945-01-084-9980
NSN 5960-01-426-4242