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 5855-01-171-2818
NSN 6150-01-632-9453
NSN 5925-01-078-6673
NSN 5985-00-061-6024
NSN 6150-00-027-7511
NSN 5835-01-381-2683
NSN 7035-01-633-9537
NSN 5960-01-506-5854
NSN 5855-01-455-3317
NSN 6220-00-500-4813
NSN 5920-01-442-8998
NSN 6610-00-073-4581