
High Pressure Metal to Metal Sealing Ball Expansion Plug Qd Series. High Pressure Sealing: Withstands 35-45MPa working pressure with leak-proof performance. Durable Materials: Heat-treated bearing steel ball and case-hardened zinc-plated sleeve. Wide Size Range: Available in sizes from 3mm to 22mm for various hole sealing needs. SFC Compatibility: Fully consistent with SFC original model size for perfect interchangeability. Easy Installation: Simple radial expansion installation using basic tools and a press. Versatile Application: Ideal for hydraulic valve blocks, cylinders, and pneumatic parts. Customization Support: Supports customized production for specific size and design requirements. Long Service Life: Durable and wear-resistant design ensures extended operational lifespan.