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 5945-00-004-9503
NSN 6320-01-445-8192
NSN 5999-00-590-3639
NSN 7035-00-163-6221
NSN 6150-01-516-1740
NSN 6110-01-003-6717
NSN 5998-01-230-1701
NSN 5985-01-160-4430
NSN 6220-01-495-5957
NSN 5935-00-417-0297
NSN 5950-01-486-5383
NSN 5855-01-643-1485