Precision Tool Plunger Rings for hot chamber die casting are stocked in a variety of inch and metric sizes. They are made from ASL 42 stainless steel and heat treated to 45-52 Rc. This grade is higher in carbon and chrome than type 420 stainless and also has vanadium and molybdenum added to it. It will provide longer life than type 420.
Additionally, these rings are made from rolled flat wire and then cut to length and formed. This enhances the circumferential properties of the rings and makes them completely burr free with smooth edges.
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