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 5915-01-535-1628
NSN 5975-01-356-8251
NSN 5915-00-812-6476
NSN 5915-01-331-3064
NSN 4140-01-606-9953
NSN 7035-00-890-7649
NSN 6130-01-168-5286
NSN 5998-00-956-6518
NSN 6240-00-686-5345
NSN 5910-00-592-2560
NSN 5855-01-023-3727
NSN 5895-00-106-1239