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 5910-01-112-2444
NSN 5985-01-314-7977
NSN 5935-01-293-7233
NSN 5895-01-290-3887
NSN 5915-01-128-9990
NSN 5998-00-017-9110
NSN 5925-01-422-4748
NSN 5990-00-682-3531
NSN 6320-01-323-7565
NSN 5915-00-166-1395
NSN 5930-01-472-5805
NSN 5960-00-400-2222