
PTFE Foam

Expertly converted PTFE foam parts, engineered for precision, durability, and seamless integration
At Kewell Converters, we specialise in delivering precision-engineered PTFE foam solutions tailored to meet the stringent requirements of the aerospace, defence, and industrial sectors. With over 50 years of dedicated experience in foam conversion, our Kent-based team of engineers and designers offer vast expertise in developing high-quality

Why choose PTFE foam?
Polytetrafluoroethylene (PTFE) foam is renowned for its exceptional chemical resistance, thermal stability, and non-stick properties. Its unique combination of characteristics makes it an ideal material for applications requiring:
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- Chemical resistance: PTFE foam withstands exposure to a wide range of chemicals, acids, bases, and solvents, ensuring longevity in corrosive environments.
- Thermal stability: operating effectively across a broad temperature range, PTFE foam maintains its integrity in extreme thermal conditions
- Non-stick surface: the low coefficient of friction prevents adhesion, making it suitable for applications where cleanliness and ease of maintenance are critical
- Electrical insulation:PTFE foam’s excellent dielectric properties make it an effective insulator in electrical applications
- Lightweight and flexible: the porous structure contributes to its lightweight nature, allowing for flexibility in design and application
Applications across industries
Our PTFE foam solutions are utilised in various high-performance applications.
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Aerospace
Seals, gaskets, insulation, and vibration dampening components that meet stringent aerospace standards
Defence
Durable and reliable foam parts for military equipment, offering resistance to harsh environmental conditions.
Industrial
Custom foam solutions for machinery and equipment requiring chemical resistance and thermal insulation

End-to-end support from design to delivery
When you choose Kewell Converters, you’re not just sourcing PTFE foam — you’re partnering with a team that takes complete responsibility for the success of your project. We manage the entire process in-house, from initial consultation and material sourcing to CAD design, foam fabrication, and final delivery.
Our highly skilled engineering team plays a central role in every project, offering practical advice and technical guidance from day one. Whether you need a single prototype or full-scale production, we ensure every foam part is optimised for performance, manufacturability, and cost-efficiency.
Because we work exclusively with foam — and have done for over 50 years — we understand the fine tolerances, behaviours, and limitations of every foam material we convert, including specialty foams like PTFE. That expertise enables us to deliver better outcomes, and give your team peace of mind that the job will be done right the first time.

Kewell Converters: your partner in foam innovation
Our approach combines advanced foam fabrication techniques with a deep understanding of material properties to deliver solutions that meet your specific requirements. We offer:
- Expertise in foam conversion: decades of experience in transforming raw foam materials into high-quality components
- Custom design services: in-house CAD design capabilities to develop bespoke foam parts tailored to your applications
- Quality assurance: rigorous testing and quality control processes to ensure each product meets the highest standards
- Comprehensive support: from initial consultation to final delivery, our team provides end-to-end support for your projects
Let's collaborate
If you’re seeking a reliable partner for your PTFE foam requirements, Kewell Converters is here to assist. Our commitment to quality, innovation, and customer satisfaction makes us the preferred choice for high-performance foam solutions.
Contact us today to discuss your project and discover how our expertise can benefit your operations.
FAQs
PTFE foam is used for gaskets, seals, insulation, and vibration dampening in aerospace, defence, and industrial equipment.
It offers unmatched chemical resistance, thermal stability, and a non-stick surface—ideal for harsh or sensitive environments.
Yes, its excellent dielectric properties make it a strong choice for electrical insulation applications.
Absolutely. We provide fully bespoke PTFE foam components with in-house CAD design and precision fabrication.