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 5895-00-981-8642
NSN 6220-00-602-1899
NSN 5835-00-216-4568
NSN 6620-01-451-3742
NSN 6650-01-513-0493
NSN 6240-00-324-2713
NSN 6320-01-261-5983
NSN 5950-00-383-6702
NSN 5990-00-501-4994
NSN 5960-01-212-4227
NSN 6645-01-010-3746
NSN 5950-01-302-8999