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 6685-01-646-2185
NSN 6145-00-427-7201
NSN 5855-01-461-9207
NSN 5990-00-283-1324
NSN 5950-00-081-2703
NSN 5960-01-430-3911
NSN 6685-01-406-4482
NSN 5915-01-659-8571
NSN 5915-01-478-3376
NSN 5930-01-041-0813
NSN 6150-01-488-8265
NSN 5855-01-091-9966