Customised Sprue Bushings

Seamless Nozzle Sealing & Mirror-Lapped Internal Tapers

• Leak-Free Injection Interfaces: The spherical contact seat is micro-machined to perfect spherical tolerance parameters, ensuring a tight seal against the injection machine nozzle to prevent resin blowouts.
• Mirror-Finished Internal Runners: The tapered internal flow path is mirror-polished down to low roughness scores, eliminating drag restrictions and guaranteeing clean sprue pull-out during mold opening.
• Premium Thermal Steel Treatment: Machined from premium SKD61 hot-work steel and hardened to endure repetitive thermal shock profiles from high-speed molten plastic flow.

Customization & Non-Standard OEM Expertise

• Tailored to Your Drawings: We offer comprehensive OEM/ODM manufacturing flexibility, delivering high-precision sprue bushings processed exactly to your provided 2D blueprints (PDF/DXF) and 3D CAD models (STEP/IGS).
• Specialized Non-Standard Inlets: We excel at processing custom length combinations, extended flange projections, specific offset cooling line recesses, and non-standard internal taper angles that off-the-shelf listings cannot satisfy.
• Rapid Industrial Turnaround: Our optimized tool paths allow for fast production processing and highly responsive shipping schedules to avoid toolroom delivery lags.

Technical Specifications

• Structural Varieties: Flanged Mounting Styles, Press-Fit Configurations, Mating Locating Ring Assemblies.
• Achievable Geometric Tolerances: Spherical Radius (SR) matched within ±0.1mm; Internal Taper angle concentricity held inside 0.01mm.
• Internal Finish Quality: Tapered flow runner path polished down to Ra 0.2μm to prevent sticky runner defects.

We are committed to helping industrial buyers, localized workshop managers, and emerging product designers grow by offering flexible purchasing with absolutely no minimum order quantity (MOQ) pressures. Whether you require a single standalone custom sprue bushing replacement or an entire set of complex runner sub-assemblies, we deliver premium results with minimal stock burden. Contact our engineering team today to upload your drawings and get started.