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 6220-01-332-7793
NSN 5965-01-135-2647
NSN 5985-01-075-2606
NSN 6110-01-384-5857
NSN 6240-00-155-7900
NSN 5835-01-383-1313
NSN 5910-01-032-4412
NSN 5950-01-026-1040
NSN 5935-01-157-5242
NSN 5855-01-184-8089
NSN 5965-01-649-1279
NSN 5975-01-138-3702