Simple solution, big impact.
The FunnelCap ensures safe and spill-free oil servicing for aircrafts. They are designed to prevent spilling and Foreign Object Debris (FOD) contamination, which is essential for maintaining the integrity and safety of aircraft oil systems.
TheCanKey products are the result of over 30 years of experience in the aircraft engineering industry, driven by Torben Biehl Jensen, a passionate and creative force in aviation maintenance. Torben’s journey began with his work on aircraft like the GAF Nomad, where he faced numerous engine chip warning
challenges. His dedication to improving the maintenance process led to the creation of groundbreaking FOD-free products. His years of hands-on experience have shaped TheCanKey products to meet the real needs of aircraft technicians.




Gallon Can FunnelCap
The Gallon Can FunnelCap is designed to ensure the safe and efficient servicing of aircraft hydraulic systems. This innovative tool features a no-spill design that guarantees a tight seal during use, preventing oil spills. It allows for the secure storage of open, half-used oil cans, eliminating the risk of leakage. Additionally, the flex hose clip helps minimize storage space when not in use. Its extendable reach can be further enhanced with additional flex hoses, allowing for greater flexibility during servicing. For added safety, the removable hose comes with a red cap that seals the hose end, preventing leakage and contamination.
Quart Can FunnelCap
The Quart Can FunnelCap is tailored to provide safe and efficient servicing of aircraft turbine engine oil. This compact and innovative tool ensures no spills or FOD contamination, making it indispensable for aviation maintenance. With a tight seal, the Quart Can FunnelCap prevents oil spills during filling and provides leak-proof storage for open, half-used oil containers. The flex hose clip secures the hose to the can, minimizing storage space when not in use, while additional flex hoses can be connected for greater reach. The removable hose, when detached, is sealed with a red cap to prevent contamination, ensuring a safe and clean maintenance process.
FunnelCap with Bottle Fittings
The FunnelCap with Bottle Fittings is an evolution of the popular FunnelCap for (gallon cans) quart plastic bottles. Developed to simplify the safe and efficient filling of piston oil and servicing of aircraft gearbox systems, this tool minimizes the risk of spills and contamination by FOD. Torben’s extensive experience in the aviation industry, particularly in developing tools for FOD-free maintenance, played a key role in the design of this product, ensuring a clean and efficient oil transfer process.
Why the FunnelCap Matters
The FunnelCap is more than just tools – they are essential for ensuring the safety, cleanliness, and efficiency of aircraft oil servicing. By preventing spills and contamination, TheCanKey products help protect turbine engines from damage caused by FOD, reduce downtime, and support better maintenance practices. Whether you’re servicing hydraulic systems or storing oil, the FunnelCap provides peace of mind and contributes to more effective and sustainable aviation maintenance processes.
Torben’s dedication to FOD-free solutions, born from years of experience with inadequate equipment, makes the FunnelCap a trusted tool for efficient and safe aircraft maintenance. Download our free guide to learn more about FOD prevention.