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 5895-01-603-1005
NSN 5985-01-398-0661
NSN 5999-00-655-3867
NSN 5998-01-072-8387
NSN 6320-00-433-2773
NSN 5935-01-486-4861
NSN 5965-01-621-8547
NSN 5905-01-373-0018
NSN 5835-00-412-4663
NSN 5985-01-487-1135
NSN 5855-01-147-6024
NSN 5996-00-438-3154