For nearly 100 years, SFC KOENIG has stood for precision, reliability, and innovation.
We develop advanced sealing and flow-control solutions that make your applications safe and future-ready.
Flight-critical and defense systems demand lightweight, high-integrity sealing and flow control. SFC KOENIG expander plugs, restrictors, and check valves are engineered to meet the strictest safety and qualification standards.
Mobility platforms face tighter packaging and higher performance demands. KOENIG components seal access bores and control fluid flow directly, supporting the safety, durability, and efficiency targets of modern systems.
Industrial equipment requires continuous operation without costly unplanned downtime. KOENIG components deliver precise flow control, backflow protection, and reliable sealing in demanding high-duty-cycle pneumatic and hydraulic environments and circuits.
Power generation infrastructure operates under continuous load and high pressure. SFC KOENIG components are engineered directly into turbines and transformers to deliver leak-tight sealing and precise flow control effectively.
Emerging platforms require reliable flow control in compact designs. SFC KOENIG partners with innovators to apply custom engineering solutions, ensuring new technologies meet strict safety, reliability, and performance targets.
Semiconductor and data center systems demand tight tolerances to prevent downtime. KOENIG components provide tamper-resistant sealing and precise flow control to maintain critical advanced manufacturing and infrastructure uptime securely.
Medical devices require quiet and reliable operation for patient safety. SFC KOENIG high-precision components provide leak-tight sealing and controlled fluid flow to protect the integrity of laboratory diagnostic systems.
Beyond standard catalogue products, we deliver tailored solutions for hydraulics, automotive and other industries. Using agile project management (SCRUM/KANBAN), we involve customers and all departments from the start.
Material selection follows strict specifications, developed with universities, institutes and expert partners, ensuring compliance and meeting the highest demands.
From FEM and flow simulations to advanced testing and FMEA-driven quality assurance, we guide every project reliably through to series production.
Our sealing and flow control products are designed to meet the highest technical standards and ensure maximum safety in every system.
Sleeve: Stainless steel
Ball: Stainless steel
Pressure to max. 450 bar
Size: From ∅ 3.0 to 14.0 mm
Sleeve: Stainless steel
Ball: Stainless steel
Pressure to max. 450 bar
Size: From ∅ 0.093 to 0.281 inch
Sleeve: Stainless steel
Ball: Bearing steel
Pressure to max. 450 bar
Size: From ∅ 3.0 to 22.0 mm
Sleeve: Case hardened steel zinc plate
Ball: Bearing steel
Pressure to max. 350 bar
Size: From ∅ 3.0 to 22.0 mm
Sleeve: Aluminium
Ball: Stainless steel
Pressure to max. 210 bar
Size: From ∅ 3.0 to 12.0 mm
Sleeve: Aluminium
Ball: Stainless steel
Pressure to max. 210 bar
Size: From ∅ 0.156 to 0.437 inch
Sleeve: Aluminium
Ball: Stainless steel
Pressure to max. 150 bar
Size: From ∅ 0.125 to 0.406 inch
Sleeve: Stainless steel
Ball: Stainless steel
Pressure to max. 350 bar
Size: From ∅ 4.0 to 10.0 mm
Sleeve: Stainless steel
Ball: Stainless steel
Pressure to max. 350 bar
Size: From ∅ 0.156 to 0.375 inch
Sleeve: Stainless steel
Ball: Stainless steel
Pressure to max. 250 bar
Size: From ∅ 0.125 to 0.281 inch
Sleeve: Case hardened steel
Ball: Heat treatable steel
Pressure to max. 500 bar
Size: From ∅ 4.0 to 12.0 mm
Sleeve: Case hardened steel
Ball: Heat treatable steel
Pressure to max. 500 bar
Size: From ∅ 4.0 to 10.0 mm
Sleeve: Stainless steel
Ball: Stainless steel
Pressure to max. 60 bar
Size: From ∅ 4.0 to 10.0 mm
Sleeve: Case hardened steel
Ball: Steel
Pressure to max. 60 bar
Size: From ∅ 4.0 to 20.0 mm
Material: Stainless steel
Cracking Pressure: 0.14 to 2.00
Max. Working Pressure in Check Direction: 280 bar
Size: Ø 5.5mm
Material: Stainless steel
Cracking Pressure: 0.14 to 2.00
Max. Working Pressure in Check Direction: 280 bar
Size: Ø 5.5mm
Material: Stainless steel
Cracking Pressure: 0.14 to 1.00
Max. Working Pressure in Check Direction: 280 bar
Size: Ø 8.0mm
Material: Stainless steel
Cracking Pressure: 0.14 to 1.00
Max. Working Pressure in Check Direction: 280 bar
Size: Ø 8.0mm
Material: Stainless steel
Max. Working Pressure in Check Direction: 210 bar
Size: From Ø 4.0 to 10.0 mm
Hydropneumatic table press
For the installation of Series MB, and CV from Ø 3 – 10mm (.156″ – .375″inch), BF and BR 5.5 and 8mm, and Series RE from Ø 4 – 10mm.
Hydropneumatic table press
For the installation of Series MB and CV Ø 12 – 22mm (.406″ – .437″ inch)
Hydropneumatic tool with vacuum mandrel collection
Series LK / SK / SKC
Hydropneumatic tool with vacuum mandrel collection
Series LK / SK / SKC
Hydropneumatic tool with vacuum mandrel collection
Series LK / SK
Hydropneumatic tool with vacuum mandrel collection
Series LK
Battery tool
Series LK / SK / SKC
Recommended for:
Express 3000, Express 5000
Recommended for:
Express 3000, Express 5000
Recommended for:
Express 3000, Express 5000
Recommended for:
Express 3000, Express 5000
Recommended for:
Express 3000, Express 5000
Recommended for:
Express 3000, Express 5000
Recommended for:
Express 3000, Express 5000
Recommended for:
Express 3000, Express 5000
Recommended for:
Extool-030, Extool-040-1, Extool-040-2, Extool-B-010
Hydropneumatic table press
For the installation of Series MB, CV and LP from . 3 - 10mm (.093" - .375"inch), BF and BR 5.5 and 8mm, and Series RE from . 4 - 10mm.
Recommended for:
Express 3000
Recommended for:
Express 3000, Express 5000
Since 1927, SFC KOENIG has developed sealing and flow control components for demanding applications. What began in lightweight construction is today a global partner for hydraulics, automotive and machinery engineering.
Extreme pressure, corrosion-resistant materials or very compact designs? We work with you to develop a solution and take it all the way to series production.
Every material is selected against strict specifications and applicable regulations. Our data-based material specifications make sure your product meets the highest technical requirements.
We involve all departments and you as the customer from the start, working in agile cycles (Scrum/Kanban, since 2021). Simulation and testing find weaknesses early, so you get shorter development times and lower risk.
Our engineers will get back to you with a suitable solution.
Reliable sealing and flow control for the next generation of vehicles – from high-efficiency internal combustion engines to advanced electric drivetrains and battery cooling.
Mastering extreme pressures and harsh environments with precision components for mobile hydraulics, stationary industrial systems, and demanding offshore oil and gas applications.
High-performance sealing for mission-critical flight controls and engines, meeting the strictest safety and weight-saving standards in aviation.
High-precision components for medical equipment and patient positioning systems, ensuring smooth, reliable, and safe operation in demanding healthcare environments.