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 5945-01-583-4556
NSN 6320-00-905-0543
NSN 5930-00-439-0870
NSN 2925-01-464-3093
NSN 5985-00-274-4062
NSN 6150-01-603-8776
NSN 5975-01-296-1140
NSN 5945-00-999-2878
NSN 5985-01-555-8768
NSN 5975-00-146-7925
NSN 6240-00-832-6867
NSN 5965-00-387-6880