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 5975-01-406-6084
NSN 5990-01-253-5011
NSN 5855-01-426-5589
NSN 6130-01-462-6927
NSN 6130-01-131-9158
NSN 6105-00-089-6824
NSN 5965-01-649-8136
NSN 5935-01-445-1431
NSN 5915-01-080-1397
NSN 6145-01-212-7990
NSN 5910-01-083-7188
NSN 7035-00-437-7950