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 6220-01-038-8292
NSN 5990-00-756-6059
NSN 5985-00-491-1836
NSN 6220-00-383-9402
NSN 5975-00-468-9924
NSN 5910-01-132-1398
NSN 4140-01-287-5429
NSN 6220-01-101-7317
NSN 5935-01-047-0588
NSN 5999-01-356-9304
NSN 5855-00-149-0766
NSN 5910-01-122-8131