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Home > Construction & Decoration > Pipe Fittings > Tee > Precision Machined KF25 to KF40 Connection Adapter for Semiconductor Equipment

Precision Machined KF25 to KF40 Connection Adapter for Semiconductor Equipment

Negotiable MOQ: 10 Pieces (Price negotiable depending on order volume and customization)

Key Specifications

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Material:

Other, Stainless Steel (Typically 304/316)

Connection Type:

KF25 to KF40

Application:

Semiconductor Vacuum Systems

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Shanghai Quanbao Electronic Materials Technology Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

China

Delivery Detail:

7 days

Product Details
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Material Other, Stainless Steel (Typically 304/316)

Connection Type KF25 to KF40

Application Semiconductor Vacuum Systems

Surface Finish Electropolished (Standard)

Sealing Method Elastomer O-ring (e.g., Viton)

Function Vacuum Line Connection & Transition

Brand Quanbao

Model Designation QB-KF25-40-AD

Operating Pressure High Vacuum (e.g., <1x10^-8 mbar)

Compatibility Standard KF Flange Dimensions

As a specialized manufacturer based in the industrial hub of Shanghai, China, Shanghai Quanbao Electronic Materials Technology Co., Ltd. delivers precision-engineered components critical for advanced manufacturing. Our Precision Machined KF25 to KF40 Connection Adapter is meticulously designed to meet the exacting demands of semiconductor equipment, ensuring reliable and leak-tight transitions between these common vacuum flange sizes. This adapter is fundamental for maintaining system integrity and process purity in sensitive vacuum environments.

Engineered for performance and longevity, this adapter provides a crucial link in your vacuum chain, facilitating seamless integration of components with differing KF flange connections. Its precision machining guarantees optimal alignment and minimizes turbulence, contributing to stable vacuum levels essential for semiconductor fabrication processes like thin-film deposition, etching, and analytical instrumentation.

Key Features & Technical Specifications:

Precision Machining: Manufactured using advanced CNC machining techniques to ensure dimensional accuracy, smooth surface finish (typically Ra ≤ 0.8μm after electropolishing), and perfect concentricity between KF25 and KF40 flanges, minimizing gas conductance restrictions.
High-Quality Material: Constructed from corrosion-resistant stainless steel (typically 304 or 316 grade), offering excellent strength and compatibility with aggressive process gases and cleaning procedures common in semiconductor fabs.
Superior Sealing: Features precision-machined grooves for reliable sealing using standard elastomer O-rings (commonly Viton® or equivalent fluoropolymer, customizable). Ensures leak rates typically better than 1x10^-9 mbar·l/s He when properly installed.
Electropolished Surface: Standard electropolishing significantly reduces surface roughness and micro-pitting, enhancing vacuum performance by minimizing gas desorption and particle trapping, crucial for ultra-high vacuum (UHV) applications.
Robust Design: Engineered for high vacuum and UHV compatibility, capable of withstanding standard bake-out temperatures (typically up to 150°C for Viton seals).
Standard Compliance: Manufactured to conform to widely accepted KF (ISO-K, NW) flange dimensions (ISO 2861 / DIN 28404), ensuring compatibility with components from major vacuum equipment suppliers.

Technical Specifications Table:

Parameter	Specification
Flange Sizes	KF25 (NW25) to KF40 (NW40)
Primary Material	Stainless Steel 304 / 316
Surface Finish	Electropolished (Standard)
Seal Material	Viton® (FKM) O-ring (Standard, other options available)
Max. Bake-Out Temp (with Viton)	150°C (Recommended)
Typical Leak Rate	< 1x10^-9 mbar·l/s He
Connection Standard	KF (ISO-K, NW) per ISO 2861 / DIN 28404

Benefits for Your Semiconductor Operations:

Enhanced Process Reliability: Consistent leak-tight performance minimizes contamination risks and process interruptions, directly impacting yield and tool uptime.
Improved Vacuum Integrity: Precision machining and electropolishing contribute to faster pump-down times and lower ultimate pressures, critical for advanced semiconductor processes.
Reduced Particle Generation: Smooth surfaces and precise fits minimize friction and the generation of particulates, a major concern in cleanroom environments.
Simplified Maintenance & Compatibility: Adheres to standard KF dimensions, ensuring easy integration and replacement within existing vacuum systems using common clamping hardware.
Cost-Effective Solution: Offers a durable and reliable connection point, reducing the frequency of replacements and associated maintenance costs compared to lower-quality alternatives.

Shanghai Quanbao Electronic Materials Technology Co., Ltd., strategically located in Shanghai, leverages China's advanced manufacturing infrastructure and skilled workforce to produce high-precision vacuum components. Our focus on rigorous quality control and understanding of semiconductor industry requirements ensures that our KF25 to KF40 adapters deliver consistent, reliable performance in your most critical applications. We are committed to providing solutions that meet the high standards demanded by semiconductor equipment manufacturers worldwide.

Invest in the precision and reliability that your semiconductor vacuum systems require. Choose Quanbao's KF25 to KF40 Connection Adapter for seamless integration and dependable performance. Contact us today to discuss your specific requirements or to request detailed product documentation and pricing.

Frequently Asked Questions (FAQ):

Q: Is the 304/316 Stainless Steel used certified for specific grades?
A: We typically utilize ASTM A276 compliant 304 or 316 stainless steel. Specific material certification documentation is available upon request to meet traceability requirements.
Q: Can this adapter withstand Ultra-High Vacuum (UHV) conditions?
A: Yes, the combination of precision machining, electropolished surfaces, and appropriate sealing (like metal gaskets, available upon request) makes this adapter design suitable for UHV applications. Standard Viton seals are suitable for high vacuum.
Q: What is the maximum pressure rating for this adapter?
A> KF flanges are primarily designed for vacuum service. The adapter itself, made from stainless steel, has high structural strength. The pressure rating is primarily determined by the sealing method. Standard elastomer seals (Viton) are rated for full vacuum up to atmospheric pressure. Consult us for specific high-pressure applications.
Q: Are other sealing options available besides Viton?
A: Yes. We can provide adapters with alternative O-ring materials such as EPDM, Silicone (VMQ), Buna-N (NBR), or Kalrez® (FFKM) for specific chemical or temperature compatibility. Metal seals (e.g., copper) for UHV are also available upon request.
Q: Do you provide the clamping hardware (clamps and centering rings) with the adapter?
A> The adapter itself is supplied without clamps and centering rings, as these are standard reusable components often already present in the user's inventory. However, we can supply complete KF flange kits including clamps, centering rings, and O-rings upon request.
Q: Can you manufacture custom variations of this adapter?
A: Absolutely. Shanghai Quanbao specializes in custom vacuum components. We can produce adapters with different lengths, alternative materials (like aluminum alloy), specific surface finishes (e.g., specific Ra values), or custom port configurations (e.g., adding a gauge port). Contact us with your specifications.
Q: What is your standard lead time for this adapter?
A: Standard KF25 to KF40 adapters are typically available from stock or have short production lead times. Exact lead times depend on current order volume and specific configuration (material, finish). Please inquire for current availability and delivery estimates.
Q: How do I ensure a leak-tight connection when installing the adapter?
A: Ensure mating flanges are clean and undamaged. Use a new, lubricant-free O-ring (if applicable). Position the centering ring correctly. Tighten the clamp evenly and to the recommended torque specification (usually finger-tight plus 1/4 to 1/2 turn with a spanner). Always perform a leak check after installation.