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 5905-00-987-4773
NSN 5835-01-578-3443
NSN 6150-01-141-7033
NSN 5950-00-823-6328
NSN 6220-01-351-8217
NSN 5996-01-169-4794
NSN 5895-01-184-3803
NSN 6240-01-442-6770
NSN 6240-00-710-2742
NSN 6610-01-129-6420
NSN 6620-00-995-4958
NSN 6620-01-083-4672