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 5999-01-123-6310
NSN 6620-01-158-3125
NSN 5990-01-463-2279
NSN 5960-00-957-0951
NSN 5935-01-605-2726
NSN 5950-01-626-5146
NSN 5835-01-024-3653
NSN 5925-01-451-5140
NSN 6685-00-934-8676
NSN 5920-01-323-4821
NSN 5975-01-395-7420
NSN 5935-00-989-5334