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 6220-00-880-6921
NSN 6240-00-185-8367
NSN 7035-00-142-9076
NSN 5950-01-023-4994
NSN 6645-01-233-1131
NSN 6620-01-131-6980
NSN 5975-01-356-8095
NSN 6645-01-449-5457
NSN 6645-01-285-8304
NSN 5985-01-440-1781
NSN 5895-01-441-0256
NSN 5990-00-888-0718