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 5930-00-139-9046
NSN 5985-01-631-6522
NSN 5910-00-885-3964
NSN 6130-01-372-4540
NSN 5985-00-232-8105
NSN 5985-01-485-4197
NSN 5960-00-315-0358
NSN 6610-01-336-8027
NSN 5985-01-156-6090
NSN 6240-01-167-5979
NSN 5960-00-266-6741
NSN 5935-00-270-1276