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 5905-01-177-5198
NSN 6240-01-478-2125
NSN 5895-00-123-4842
NSN 5960-00-597-2680
NSN 6240-01-604-9172
NSN 2925-01-583-5619
NSN 6650-00-420-2640
NSN 5915-01-226-5880
NSN 5930-01-483-1231
NSN 5915-00-433-8624
NSN 6685-00-019-0552
NSN 5835-01-388-5198