BORFLEX®, French and European leader in technical rubber parts, creates and produces elastomer solutions for the main players in the nuclear industry.
BORFLEX® is the supplier of choice for major contractors and all those involved in new construction and maintenance.
BORFLEX® produces mechanical parts and precision assemblies for thenuclear industry in all metals and alloys, as well as in a wide range of plastics (PVC, polypropylene, polyethylene, polyamide, etc.).
The BORFLEX® group designs and manufactures all types of rubber and PU molds, as well as rolled threads, and can supply customized seals and elastomer parts for the nuclear industry.
BORFLEX® expertise
BORFLEX® stands out thanks to its expertise, mainly in the following areas
- Radiation resistant elastomers
Which guarantee the watertightness of the working chamber
· Seals for swimming pools (cofferdam seals)
· Radiation protection (Flexibore)
· Sensitive sealing applications
· Protective bellows
The FLEXIBORE® trademark, registered by BORFLEX® and specially developed for the nuclear industry, guarantees that the final part will absorb thermal neutrons.
Its 50% B4C composition makes scattering negligible compared to neutron absorption. FLEXIBORE® is also used in neutron spectrometry to reduce background noise.
FLEXIBORE® is very flexible and can be adapted to complex shapes. It can be folded on a small radius without breaking. It is easy to cut and the B4C powder is evenly distributed.
Flexibore is a material composed of natural rubber and B4C powder. The Flexibore sheet contains 50% of its weight in B4C. The B10 contained in the material absorbs neutrons. Scattering is negligible compared with neutron absorption. Flexibore is also used in neutron spectrometry to reduce background.
CHARACTERISTICS:
- - High flexibility: adapts to complex shapes
- - Folds to a small radius without breaking
- - Uniform distribution of B4C powder
- - Easy to cut
- - Black colour

We are proud to announce that our group has obtained ISO 19443 certification, an international standard dedicated to suppliers in the nuclear industry.
This recognition confirms the quality, safety, and rigor of our management systems, as well as the commitment of all our teams. This milestone allows us to go even further in operational excellence and strengthen the trust of our customers, partners, and clients in this strategic market.
View the certificate here
Examples of watertight elastomer products for the nuclear industry
- - Rolled fillets
- - Custom joints
- - Door seals (between reactor and living areas)
- - Mussels cc or pu
- - Wear parts for valves
- - Mechanical parts (for metals, alloys, plastics)