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 5910-00-708-1893
NSN 5985-01-220-6384
NSN 6130-01-634-0603
NSN 6220-00-866-1346
NSN 5985-01-318-5986
NSN 6650-01-094-6876
NSN 5855-00-149-0766
NSN 5925-01-139-9972
NSN 5905-01-377-5273
NSN 5910-01-531-0859
NSN 5950-00-203-5809
NSN 6145-01-054-2662