CTI Seals

Precision rotary sealing systems for axles and wheel-drive assemblies on off-highway equipment.

These seals transfer compressed air from a fixed stub shaft to a rotating hub for tyre inflation and deflation. Our unique design ensures sealing integrity and delivers reliable CTI system performance under harsh conditions.

Designed for seamless integration into OEM equipment and scalable for high‑volume production, CTI technology originally developed for military vehicles is now widely used in agriculture, construction, and heavy transport.

CTI Seals

Precision rotary sealing systems for axles and wheel-drive assemblies on off-highway equipment.

Temperature Range

Reliable operation from -55°C to +200°C in extreme environments

High-Speed Capability

Rotational speeds of up to 10 m/s without compromise

Contaminant Protection

Seal design and proprietary abrasion-resistant materials safeguard against particulate ingress and corrosion

Eliminate Leakage

Precision contact surfaces eliminate fluid loss in critical systems

Design & Performance Features

• Optimised lip profiles with dry running geometries that control airflow and an opposing elastomeric lip for effective oil and grease retention
• Operating capability from full vacuum to 12 Bar, temperatures from –55°C to +160°C and speeds up to 5 m per second
• Durable FKM and HNBR elastomers for long service life
• Compact design for easy integration into axle and hub assemblies
• Improved tyre life by up to 15 percent and reduced fuel use by 1 to 4 percent
• Class leading air and oil separation to minimise leakage and power loss
• Extended operational life with proven dry running performance and reduced wear

Engineered for your application

Our design approach focuses on:

Bespoke profiles tailored to individual axle and hub configurations
Adaptable solutions for military, agricultural, off‑highway, and heavy‑transport vehicles
High sealing efficiency is maintained under frequent inflation and deflation cycles
Material and design options selected to match specific environmental, thermal, and pressure requirements
Installation envelope optimised to suit available housing space and reduce assembly complexity
Configurable designs to support long‑distance, harsh‑terrain, or high‑duty operating profiles typical of CTI systems

Why FTL?

Our case studies show how FTL helps customers improve reliability, reduce downtime and solve complex sealing challenges. We work closely with OEMs from early design stages, providing proposal drawings, material guidance and technical support to ensure each solution is engineered for its operating conditions.

Our internal testing capability supports validation by assessing performance at customer matched parameters, helping refine designs and confirm suitability before field use. By combining collaborative development, strong application knowledge and structured validation, FTL delivers solutions that improve long term performance and give customers confidence in the outcome.