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KF (QF) HV Replacement O-Rings

KF (QF) HV Replacement O-Rings

KF (QF) HV Replacement O-Rings

TFM’s KF (QF) HV Replacement O-Rings are designed to provide reliable sealing solutions for ISO-KF vacuum systems. These O-rings are essential for ensuring leak-tight connections and maintaining the integrity of your vacuum system over time. Crafted from high-quality materials, they are built to withstand demanding high-vacuum environments, offering durability and long-lasting performance.

Key Features of KF (QF) HV Replacement O-Rings

  • Leak-Tight Sealing: Designed to provide a secure, leak-tight seal, these O-rings help maintain the vacuum integrity of your system, preventing leaks and contamination in sensitive environments.

  • Durable Material Construction: Made from high-performance materials, the KF (QF) HV Replacement O-Rings offer exceptional resistance to wear, temperature fluctuations, and chemical exposure, ensuring long-term functionality.

  • Easy Replacement: These O-rings are designed for easy installation and replacement, making maintenance of your vacuum system straightforward and efficient.

  • Compatibility: Compatible with a wide range of KF (QF) vacuum flanges, including KF10, KF16, KF25, KF40, and KF50, ensuring versatility across various applications.

  • Enhanced Performance: Offering consistent sealing, these O-rings help optimize the performance of your vacuum system by maintaining stable pressure conditions and minimizing the risk of leaks.

Applications

The KF (QF) HV Replacement O-Rings are ideal for use in a variety of high-vacuum applications, including:

  • Vacuum chambers

  • Pumping systems

  • Semiconductor processing

  • Analytical instruments

  • Research laboratories

These O-rings are especially important in applications where continuous vacuum integrity is critical, and they provide an easy solution for maintaining peak system performance.

Why Choose TFM’s KF (QF) HV Replacement O-Rings?

At TFM, we specialize in delivering high-quality vacuum components designed for optimal sealing and system integrity. Our KF (QF) HV Replacement O-Rings offer reliable, long-lasting performance, ensuring your vacuum system operates efficiently and without interruptions. With easy replacement and consistent sealing, they are the ideal choice for professionals seeking to maintain the longevity and effectiveness of their vacuum systems.

Ordering Table

Drawing Flange OD Reference O-Ring Size O-Ring Color O-Ring Material O-Ring Cross Section O-Ring ID O-Ring OD Part Number
Tooltip KF10 O-ring Seals, Nitrile (Buna-N) 312 Black 4900-70 Nitrile 0.210 0.600 1.020 O-B312
Tooltip KF16 O-ring Seals, Nitrile (Buna-N) 314 Black 4900-70 Nitrile 0.210 0.725 1.145 O-B314
Tooltip KF25 O-ring Seals, Nitrile (Buna-N) 320 Black 4900-70 Nitrile 0.210 1.100 1.520 O-B320
Tooltip KF40 O-ring Seals, Nitrile (Buna-N) 326 Black 4900-70 Nitrile 0.210 1.600 2.020 O-B326
Tooltip KF50 O-ring Seals, Nitrile (Buna-N) 330 Black 4900-70 Nitrile 0.210 2.100 2.520 O-B330
Tooltip KF10 O-ring Seals, Fluorcarbon (FKM) 312 Brown 9505-75 Fluorocarbon 0.210 0.600 1.020 O-V312
Tooltip KF16 O-ring Seals, Fluorcarbon (FKM) 314 Brown 9505-75 Fluorocarbon 0.210 0.725 1.145 O-V314
Tooltip KF25 O-ring Seals, Fluorcarbon (FKM) 320 Brown 9505-75 Fluorocarbon 0.210 1.100 1.520 O-V320
Tooltip KF40 O-ring Seals, Fluorcarbon (FKM) 326 Brown 9505-75 Fluorocarbon 0.210 1.600 2.020 O-V326
Tooltip KF50 O-ring Seals, Fluorcarbon (FKM) 330 Brown 9505-75 Fluorocarbon 0.210 2.100 2.520 O-V330
Tooltip KF10 O-ring Seals, Silicone 312 Brick Red 1200-70 Silicone 0.210 0.600 1.020 O-S312
Tooltip KF16 O-ring Seals, Silicone 314 Brick Red 1200-70 Silicone 0.210 0.725 1.145 O-S314
Tooltip KF25 O-ring Seals, Silicone 320 Brick Red 1200-70 Silicone 0.210 1.100 1.520 O-S320
Tooltip KF40 O-ring Seals, Silicone 326 Brick Red 1200-70 Silicone 0.210 1.600 2.020 O-S326
Tooltip KF50 O-ring Seals, Silicone 330 Brick Red 1200-70 Silicone 0.210 2.100 2.520 O-S330
Tooltip KF10 O-ring Seals, Kalrez 312 Black 4079 Kalrez 0.210 0.600 1.020 O-K312
Tooltip KF10 O-ring Seals, Ethylene Propylene (EPDM) 312 Black 5600-70 EPDM 0.210 0.600 1.020 O-E312
Tooltip KF16 O-ring Seals, Kalrez 314 Black 4079 Kalrez 0.210 0.725 1.145 O-K314
Tooltip KF16 O-ring Seals, Ethylene Propylene (EPDM) 314 Black 5600-70 EPDM 0.210 0.725 1.145 O-E314
Tooltip KF25 O-ring Seals, Kalrez 320 Black 4079 Kalrez 0.210 1.100 1.520 O-K320
Tooltip KF25 O-ring Seals, Ethylene Propylene (EPDM) 320 Black 5600-70 EPDM 0.210 1.100 1.520 O-E320
Tooltip KF40 O-ring Seals, Kalrez 326 Black 4079 Kalrez 0.210 1.600 2.020 O-K326
Tooltip KF40 O-ring Seals, Ethylene Propylene (EPDM) 326 Black 5600-70 EPDM 0.210 1.600 2.020 O-E326
Tooltip KF50 O-ring Seals, Kalrez 330 Black 4079 Kalrez 0.210 2.100 2.520 O-K330
Tooltip KF50 O-ring Seals, Ethylene Propylene (EPDM) 330 Black 5600-70 EPDM 0.210 2.100 2.520 O-E330

 

 

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FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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