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 5950-01-244-9357
NSN 4140-01-383-4738
NSN 5990-01-263-0362
NSN 5990-01-537-4815
NSN 6610-00-227-8846
NSN 5935-00-850-8876
NSN 5925-00-194-9146
NSN 6685-01-342-8985
NSN 6145-01-366-7146
NSN 6110-00-636-1234
NSN 5975-00-997-0749
NSN 5930-01-634-0659