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 6620-01-651-5425
NSN 5835-00-672-5827
NSN 5925-00-756-0462
NSN 5925-01-302-1999
NSN 5996-01-624-3209
NSN 6620-00-109-5607
NSN 6650-01-143-9611
NSN 5835-01-632-6627
NSN 4140-01-179-4507
NSN 4140-01-096-1596
NSN 5998-01-350-8866
NSN 6650-01-514-0240