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 5996-01-503-8589
NSN 5996-00-767-4877
NSN 6135-00-351-8606
NSN 5910-01-623-8178
NSN 6145-00-724-5142
NSN 6150-01-087-4673
NSN 4140-00-449-7345
NSN 6135-01-472-9011
NSN 5990-01-516-9665
NSN 5925-01-004-5277
NSN 5985-01-448-2248
NSN 6240-01-160-7430