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Help CenterIndustrial Rubber Blocker for Process Hole Protection | Reusable Machining Plugs | Xi'an Chris
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Rubber Blocker
Cost-Effective Process Hole Protection & Precision Machining Masking Solutions
XI'AN CHRIS NEW MATERIALS CO., LTD. manufactures and supplies industrial-grade Rubber Blocker components engineered specifically to protect critical process holes, threaded ports, and internal cavities of precision machinery during various manufacturing stages. During heavy CNC machining, surface treatment, powder coating, or chemical blasting, open process holes are highly vulnerable to contamination, thread damage, and particulate ingress. Our heavy-duty Rubber Blocker line offers an easily deployable, highly adaptable, and ultra-low-cost masking solution that ensures finished components retain pristine dimensional tolerances.
��️ Core Engineering Advantages
High Reuse Longevity:
Engineered from high-tensile elastomeric matrices that withstand cyclic mechanical insertion and extraction without tearing, ensuring an exceptionally low total cost per run.
Excellent Adaptability & Interference Sealing:
The specialized compression memory of our rubber allows a single blocker size to securely seal minor variations in process hole diameters, providing a leak-proof interference fit.
Rapid Manual Operation:
Ergonomically designed for tool-free, instantaneous installation and removal, drastically optimizing cycle times on automated production lines.
Thermal & Chemical Stability:
Formulated to resist degradation when exposed to cutting fluids, industrial coolants, metalworking lubricants, and elevated curing temperatures.
�� Technical Specifications & Material Matrix
To guide production and manufacturing engineers in selecting the correct configuration for their specific surface lines, our standard profiles are specified below:
Parameter Specification
NBR Rubber Base
Primary Process Suitability
CNC Machining, Grinding, Acid Wash
Durometer Hardness
60 - 75 Shore A
Temperature Resistance
-30°C to +120°C
Chemical Resistance
Heavy cutting oils, hydrocarbons
Dimensional Flash Tolerance
ISO 3302-1 Class M2
Silicone Rubber Base
Primary Process Suitability
Powder Coating, E-Coating, Anodizing
Durometer Hardness
50 - 70 Shore A
Temperature Resistance
-60°C to +250°C
Chemical Resistance
High-heat baking solvents, ozone
Dimensional Flash Tolerance
ISO 3302-1 Class M1
EPDM Rubber Base
Primary Process Suitability
Outdoor Storage, Sandblasting, Wash
Durometer Hardness
65 - 80 Shore A
Temperature Resistance
-40°C to +140°C
Chemical Resistance
Dilute acids, alkaline baths, steam
Dimensional Flash Tolerance
ISO 3302-1 Class M2
�� Manufacturing & Surface Treatment Applications
Our rugged Rubber Blocker components are universally integrated across high-precision metalworking and automated machinery lines:
Precision CNC Machining Blocks:
Placed inside auxiliary or reference holes to keep metal chips, abrasive slag, and coolants from fouling internal threads or precision reamed surfaces.
Powder Coating & Electrostatic Painting:
High-temperature silicone configurations seal off blind or through holes, ensuring zero paint accumulation inside critical mating cavities during the oven-curing phase.
Anodizing, Plating, & Pickling Lines:
Chemically inert profiles mask off areas that must remain unplated or unexposed to aggressive chemical etching solutions.
Logistics & Internal Transport Protection:
Functions as a reliable dust-proof and moisture-proof barrier during internal foundry transport, transit, and long-term storage of machinery frames.
❓ Technical FAQ for Production Engineers & Procurement
What is the primary purpose of a Rubber Blocker in precision machinery production?
A Rubber Blocker is an industrial masking component designed to plug pre-drilled process holes, weight-reduction cavities, oil ports, and threaded connections during manufacturing. Its main function is to shield internal geometries from damage, metal shavings, cutting fluids, and coating over-spray, eliminating the need for expensive secondary tapping or manual cleaning operations.
Why is a Rubber Blocker considered a more cost-effective choice than traditional masking tape?
While traditional masking tapes require time-consuming manual cutting and application for every single part, a Rubber Blocker provides an instantaneous, tool-free push-fit. Because it is highly durable and reusable across hundreds of production cycles, it drastically slashes labor costs, reduces material waste overheads, and shortens the total cycle time per workpiece.
Can these blockers handle high-temperature powder coating cycles?
Yes. When ordered in our high-performance Silicone Rubber Base configuration, the Rubber Blocker can continuously withstand baking oven temperatures up to $+250^\circ\text{C}$ ($+482^\circ\text{F}$) without hardening, melting, or emitting gasses that could ruin the surrounding surface finish.
Is custom geometric scaling available for proprietary process hole profiles?
Yes. Xi'an Chris specializes in providing tailored molded configurations. If your machinery features proprietary tapered slots, oval process holes, or stepped diameters, we can manufacture custom tooling matching your 2D/3D CAD drawings (STEP, IGES, DWG). This ensures a custom interference fit optimized for your specific engineering clearances.
�� Conclusion & About the Supplier
In modern precision manufacturing, protecting intermediary steps is just as crucial as the final product. Implementing high-grade Rubber Blocker solutions from XI'AN CHRIS NEW MATERIALS CO., LTD. guarantees that your process holes remain chemically clean and dimensionally accurate through every stage of production. By pairing elite elastomeric chemistry with state-of-the-art compression molding, we provide reliable, wear-resistant masking and sealing components that support advanced global manufacturing.
Contact our oilfield engineering division today to discuss your pressure requirements, review CAD profiles, or request an official product RFQ.
Send Inquiry to This Supplier
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