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 5835-01-442-6482
NSN 5915-00-082-4838
NSN 6220-00-643-4045
NSN 6645-00-067-7070
NSN 6620-00-690-8905
NSN 6145-00-563-1103
NSN 5975-00-918-1631
NSN 6240-01-462-4392
NSN 5930-01-161-0756
NSN 6610-01-312-8340
NSN 5905-01-142-0300
NSN 5960-01-172-2088