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 6145-01-229-0032
NSN 5910-00-981-8954
NSN 5999-00-332-9198
NSN 6620-01-480-6887
NSN 2925-01-327-3069
NSN 5950-01-032-4893
NSN 6105-01-459-7902
NSN 5835-00-187-1481
NSN 5905-01-364-0737
NSN 5910-01-507-2360
NSN 5960-01-288-8910
NSN 6620-01-279-4353