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 6320-01-134-7267
NSN 5915-01-048-4546
NSN 6645-01-265-2746
NSN 5960-01-225-1610
NSN 5855-01-406-4821
NSN 6220-01-012-4617
NSN 6685-01-356-9967
NSN 5895-01-101-2419
NSN 6240-00-526-0243
NSN 5950-01-598-7529
NSN 5925-00-857-4850
NSN 5999-00-136-2477