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 6645-01-424-1540
NSN 6150-01-597-8024
NSN 5975-00-811-0946
NSN 6150-00-087-0815
NSN 2925-00-275-1807
NSN 5930-01-381-1059
NSN 5910-01-440-3450
NSN 6650-01-157-1667
NSN 5835-00-518-4507
NSN 6240-01-436-9132
NSN 5920-01-437-0333
NSN 5960-00-855-1098