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 2925-01-285-7163
NSN 5960-00-609-6732
NSN 5835-01-215-5961
NSN 6145-01-524-2112
NSN 5985-00-383-6178
NSN 5998-01-333-5010
NSN 5925-01-058-8459
NSN 6240-00-256-6410
NSN 5999-01-159-9946
NSN 6110-00-269-2696
NSN 5935-00-753-7895
NSN 5990-01-448-2751