from formulation to the finished product
CUstom rubber and elastomer parts
BORFLEX® has been formulating and manufacturing your custom elastomer parts in France for 65 years: moulding, extrusion, coating, lining and cutting. The group formulates over 3,000 exclusive compounds itself – including natural rubber, silicone, EPDM, nitrile and polyurethane – to meet your requirements for sealing, shock absorption or thermal resistance, from single parts to large-scale production runs.
+3,000
Exclusively formulated blends
65 years
elastomer expertise
4
Expertise in processing techniques
100 per cent
Supply chain based in France
research and development
R&D into elastomeric materials, in-house
laboratory
A strong R&D policy to maintain our leadership in innovation, supported by an in-house laboratory: qualified engineers, simulation tools, and material and strength testing for every project.
- Development of new solutions and innovative prototypes, from the rubber compounding to the finished part.
- Production and simulation of materials to ensure that tests accurately reflect real-world conditions.
- In-house laboratory analyses of material properties and strength calculations, carried out on both BORFLEX® materials and customers’ materials.
- Monitoring changes in prototyping materials to replicate mass production conditions as closely as possible.
- Ongoing technical monitoring to anticipate market trends.
research and design
Materials analysis and feasibility study for your project
In addition to the products in our catalogue, our dedicated design teams design and develop innovative elastomer solutions. We analyse your requirements, carry out material and feasibility studies, and draw up a comprehensive set of specifications for manufacturing.
RAW MATERIALS
- Research and laboratory
- Selection and monitoring
- Formulation of the mixture
CO-ENGINEERING & PROTOTYPING
- Engineering consultancies
- 3D prototyping
- Testing and simulation
- Design and manufacture of tooling
PRODUCTION
- Comprehensive solution
- From single-unit production to small and medium-sized runs
- Assembly and inspection
- Special packaging
In-house design office
Co-design of complex technical components:
Selection of hardness and elastomer, design of moulding or extrusion tooling. A single technical point of contact, from the specifications to the finished component.
MATERIALS
Over 3,000 elastomer compounds formulated in-house
Formulation is an integral part of our expertise: rubbers, fillers, plasticisers and vulcanising agents are carefully measured to achieve the mechanical, chemical and thermal properties required by your specifications. Formulation, mixing, processing and quality control are all managed in-house. This vertical integration guarantees that your parts can be reproduced identically, even several years later.
- High-performance compounds:
resistance to extreme temperatures (silicones, Viton®). - Specialised compounds:
resistance to hydrocarbons (nitrile), acids and alkalis (EPDM), electrical insulation, or solutions designed specifically for the medical, food and drink, and railway sectors.
Presentation formats
- Continuous strip (injection moulding / extrusion)
- Calendered sheets
- Calendering rollers
- Pellets
Each formulation meets the regulatory requirements of its market. Full details
of the Group’s certifications are set out on our Group page.
Formulated rubber types (ISO 1629 nomenclature)
- NR
- IR
- SBR
- BR
- EPM / EPDM
- IIR / BIIR / CIIR
- NBR
- Minutes
- VMQ / FVMQ / PVMQ
- FKM
- CM / CPE
- CSM
- ACM / AEM
- EVA
- HNBR
- XNBR
- CO / ECO
- AU / EU
LSR silicone
Automated Liquid Silicone Rubber
process
- Hardness range 20 to 80 Sh, continuous service temperature 200–240 °C
- Food and medical compliance (1935/2004, USP Class VI, FDA)
- Good UV stability, dielectric insulator, non-combustible
- Automated process, reduced cycle time
Polyurethane (PU)
Formulated and processed
in-house
- Wide range of hardness, from soft to very stiff
- Good resistance to abrasion and tearing
- Can be produced by casting, moulding, ribbon flow or rotational moulding, depending on the part
PROCESSES & MONITORING
Moulding, extrusion, coating, filling, cutting:
which process is best for which part?
In addition to the formulation, BORFLEX® manufactures your rubber components using
a range of industrial processes, selected according to the component’s
geometry, production run and function, with quality control carried out at every stage.
MOULDING
Compression, injection or transfer moulding. High-pressure vulcanised compound in a heated mould: complex shapes, tight tolerances, overmoulding of metal inserts, high production rates.
EXTRUSION
Extruded through a die, vulcanised continuously (UHF, salt bath) or vulcanised in an autoclave. Long lengths, constant cross-sections; inflatable or reinforced joints are possible.
CYLINDER LINING
Application of elastomer or polyurethane to a metal roller body, followed by grinding. Controlled hardness from Shore A to Shore D.
FABRIC COATING
Elastomer applied by doctor blade onto a textile substrate (cotton, polyester, polyamide, glass fabric, aramid fibres such as Kevlar® / Twaron® / Nomex®), on one or both sides, as a single or multi-layer coating. Thicknesses from 0.17 to 1 mm, weights from 150 to 1,000 g/m², widths up to 1.60 m.
CUTTING
Waterjet cutting and digital cutting, flat-bed cutting of rubber sheets. No tooling costs, rapid prototyping, extreme precision.
MACHINING & FINISHING
Bespoke finishes and rubber-to-metal overmoulding: a single point of contact for your metal-elastomer composite parts, from prototypes to large-scale production runs
.
Product Spotlight
Our BORFLEX® elastomer fabric coatings
Fabrics
- Cotton
- Polyester / Cotton
- Polyester
- Polyamide
- Glass fabrics
- Aramid (Kevlar®, Twaron®, Nomex®)
- etc.
Elastomers
- Natural rubber
- Butyl
- Polychloroprene
- Silicone
- Epichlorohydrin
- Nitrile
- Polyurethane
- CSM / Hypalon®
- Vamac®
- Viton®
- EPDM
- etc.
Custom coating of technical fabrics
As a leader in the custom coating of technical fabrics, we specialise in processes such as doctoring and calendering. The company offers single- or double-sided coating solutions, with elastomer coatings ranging from 30 g/m² to several hundred grams. This flexibility enables us to meet our customers’ varied requirements precisely, ensuring products tailored to each application.
Your creations
High-strength quality
Mechanical (breakage, cutting, tearing, abrasion, puncturing)
Chemical (liquid, gaseous, acidic/alkaline, oil, solvents)