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 5925-01-235-8006
NSN 5920-01-614-4125
NSN 5999-01-169-6052
NSN 5925-00-529-3950
NSN 4140-01-050-9194
NSN 6145-01-354-2319
NSN 7035-01-160-0486
NSN 5990-01-128-7599
NSN 5996-01-550-2014
NSN 5996-01-176-8878
NSN 5915-00-078-9574
NSN 2925-01-426-3410