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 6620-00-093-4186
NSN 6620-01-545-9837
NSN 5930-01-290-0879
NSN 6620-01-159-8852
NSN 6105-01-327-4584
NSN 5930-01-218-2368
NSN 5930-01-497-4515
NSN 5895-00-063-4498
NSN 6240-00-150-6754
NSN 5998-00-595-5952
NSN 6645-01-206-4888
NSN 6220-01-349-8669