The SKD11 PVC cold runner aviation plug mold is a precision tool designed for manufacturing high‑performance electrical connectors used in aerospace and related industries. It is specifically developed for molding PVC aviation plugs that must meet strict requirements for reliability, dimensional stability, and insulation performance under demanding operating conditions.SKD11, a high‑carbon, high‑chromium tool steel, is selected for key mold components such as cavities, cores, and inserts. This material provides excellent wear resistance, high hardness after heat treatment, and good dimensional stability during repeated thermal cycles. These properties are essential for long production runs and for maintaining tight tolerances on the plug’s sealing surfaces, positioning features, and thread or bayonet‑type locking structures.The mold adopts a cold runner system, which feeds PVC material from the injection unit through a sprue and runner network into multiple cavities. The cold runner design is optimized to balance flow to each cavity, reduce pressure loss, and minimize weld lines in critical areas of the plug. Gate location and type are carefully chosen to ensure complete filling of thin‑wall sections, pins, and sealing ribs while reducing residual stress and visible gate marks on functional surfaces.Because PVC is sensitive to temperature and residence time, the mold’s temperature control system is carefully engineered. Cooling channels are arranged around cavities and cores to provide uniform cooling, prevent localized overheating, and control shrinkage and warpage. Precision temperature regulation helps to avoid PVC degradation, discoloration, and gas formation that could affect part quality and mold life. Venting grooves are positioned at parting lines and appropriate features to release trapped air and gases, further improving surface finish and dimensional accuracy.The aviation plug geometry typically includes multiple pin holes, polarized keying structures, sealing grooves for O‑rings or gaskets, and sometimes overmolded cable retention features. To produce these details, the mold incorporates complex core pins, inserts, and sometimes unscrewing or side‑action mechanisms for undercuts and threads. SKD11’s rigidity and wear resistance play a key role in keeping these fine features sharp and consistent over time, ensuring stable electrical contact alignment and reliable mating with corresponding sockets.In addition to structural design, particular attention is paid to mold surface treatment and polishing. Critical sealing areas and mating surfaces are finely polished to improve sealing performance and ease of demolding. Certain areas may receive additional surface treatments such as nitriding or coating to further enhance wear resistance and corrosion resistance when processing PVC, which can release corrosive gases at elevated temperatures.Overall, the SKD11 PVC cold runner aviation plug mold combines robust material selection, precise cavity design, optimized runner and cooling systems, and strict process control. The result is a tooling solution capable of mass‑producing high‑quality aviation plugs with stable dimensions, excellent insulation properties, and long‑term durability suitable for demanding electrical and environmental applications.