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 6645-01-657-2604
NSN 5895-00-244-6750
NSN 5945-01-346-1457
NSN 5895-01-310-4915
NSN 5905-01-246-3828
NSN 5960-00-934-3233
NSN 5950-01-301-0665
NSN 5996-01-579-6558
NSN 5910-00-470-1579
NSN 2925-01-345-7433
NSN 2925-01-004-5627
NSN 5996-01-328-8018