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 5990-01-027-0568
NSN 5998-01-191-2440
NSN 6645-01-354-5589
NSN 5935-01-271-7548
NSN 5895-00-455-8952
NSN 6130-01-355-5543
NSN 6320-01-116-9866
NSN 5835-00-763-2938
NSN 6105-00-070-1826
NSN 7035-01-129-4667
NSN 5950-01-571-8560
NSN 5998-01-125-8164