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 6685-00-390-8687
NSN 5985-01-286-3690
NSN 5999-00-486-7888
NSN 6620-00-925-8435
NSN 5935-01-643-2900
NSN 5855-01-222-1242
NSN 5925-01-055-3868
NSN 5990-00-730-6269
NSN 5960-00-289-6591
NSN 6610-01-422-9508
NSN 5950-01-607-0357
NSN 6320-00-139-1090