Custom Hex Socket Cap Head Sealing Screws Integrated O Ring IP67 Waterproof Fasteners For Industrial Cabinets New Energy Equipment Suppliers, Factory

Cap head sealing screws are high-strength integrated waterproof fasteners combining standard hex socket cap screw structure with fixed rubber O-ring under the head. The exclusive bottom groove locks the sealing ring firmly without falling off during transportation or automatic assembly. After standard torque tightening, the compressed rubber fills assembly gaps completely to block rainwater, sea fog, dust and industrial oil mist, reaching stable IP67 protection without extra gaskets or sealant. Different from pan head styles, the cylindrical cap head provides larger stress area and stronger torque bearing capacity for heavy-duty industrial enclosure assembly.

Cap head sealing screws are widely adopted in high-load sealed equipment assembly. New energy charging pile shells and energy storage control boxes rely on their high torque and permanent waterproof performance to resist outdoor extreme weather. Precision sensor housings and industrial LiDAR modules use mini-size cap sealing screws to keep internal circuits dry. Outdoor power distribution boxes, automation equipment and communication junction boxes also select this series for long-term stable sealing effect. Metric sizes M2-M12 are always in stock for fast delivery.