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.
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
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.
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.
Since our founding in 1927 by Dr. Max Koenig, SFC KOENIG has come a long way – almost 100 years full of innovations and milestones in the world of sealing and control technologies. From a small company specializing in lightweight construction, we have grown into a global leader in industries such as hydraulics, automotive, and mechanical engineering. Our history is characterized by reliability, precision, and a relentless pursuit of perfection. Today, we combine this rich tradition with modern agility to create solutions that meet the challenges of tomorrow. Let’s discover together how our expertise can advance your project.
At SFC KOENIG, we offer more than just standard products. Innovation arises when we understand your specific requirements and implement them precisely. Our product portfolio offers proven standard solutions for many industries. However, in areas such as hydraulics, automotive, mechanical engineering, and renewable energies, customers often face unique challenges. Examples include applications with extremely high pressure loads, materials with superior corrosion resistance, or highly compact designs. In intensive consultation and partnership, we then develop tailor-made solution concepts that seamlessly transition into our certified project processes. From the initial idea to series production and successful market launch, we accompany you step by step – efficiently, transparently, and with a focus on long-term success. The result is products that not only work, but also noticeably strengthen your competitive advantages.
Since introducing our agile project methods in 2021, we have revolutionized the way we work—to your advantage. This modern approach, inspired by proven frameworks such as Scrum and Kanban, enables us to involve all relevant stakeholders—from internal teams to you as our valued partner—early on and on an ongoing basis. Instead of rigid schedules, we rely on iterative cycles that allow for quick adjustments and minimize risks. The result? Shorter development times, higher quality, and close cooperation based on trust. Imagine: every milestone is reflected on together, feedback is implemented directly – so your project is not only realized, but optimized together.
In a world where materials make all the difference, we at SFC KOENIG leave nothing to chance. Our material selection processes are a masterpiece of science, regulation, and practical experience. We strictly adhere to applicable legal requirements—whether REACH, RoHS, or industry-specific standards—and weave a dense network of collaborations: We develop innovative approaches with renowned universities and research institutions, while the in-depth expertise of our reliable suppliers and our interdisciplinary pool of experts bridge the gap to reality. The result is detailed, data-based material specifications that meet the highest physical requirements: from extreme resilience and temperature resistance to sustainability and durability. Whether for demanding high-pressure applications or environmentally hazardous uses, our materials are designed to make your products safe, efficient, and future-proof.
At SFC KOENIG, product development pulsates to the rhythm of state-of-the-art technologies – and we ensure that each phase meshes seamlessly with the next. Our agile project management ensures that all departments – from design and engineering to production – contribute as early as possible and with maximum expertise. The journey begins with the initial concept, which we rigorously validate using advanced simulation methods such as finite element analysis (FEA) or detailed flow simulations. These tools allow us to test virtual prototypes, identify weaknesses early on, and deploy resources in a targeted manner – without costly physical iterations.
As we move forward, we use state-of-the-art analysis and testing methods that guarantee precision and reliability: from 3D scans and non-destructive testing to AI-supported prediction models. Of course, we consistently integrate quality assurance tools such as Failure Mode and Effects Analysis (FMEA), which we apply across all development stages and prototype phases. The result is not just a product, but a validated masterpiece: robust, innovative, and ready for the market. At SFC KOENIG, development is not a linear process—it is a dynamic journey that turns your vision into reality.
Discover how our expertise can advance your next project. Contact us today—let’s push the boundaries of what’s possible together!