Flexpox – Clear Flexible Epoxy Resin for Casting & Coating
Flexpox – Clear Flexible Epoxy Resin for Casting & Coating
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Clear, Permanently Flexible Epoxy Resin for Casting Flexible Objects
Flexpox is a crystal-clear, two-component epoxy casting resin that remains permanently flexible after curing. Thanks to the added UV blocker, the cured resin retains its clear appearance for a long time. Flexpox is ideal for casting flexible objects and is processed at a mixing ratio of 100:40 (by weight). With a pot life of 30 to 40 minutes, a maximum casting height of up to 100 mm and a final hardness of 72-80 Shore D, it is a versatile resin for casting, brushing and rolling applications.
Key Properties
- Permanently flexible: → the cured resin stays supple and resilient, ideal for objects that need to flex.
- Crystal-clear with UV blocker: → stays nicely clear for a long time and yellows more slowly under light.
- Casting height up to 100 mm: → suitable for thicker castings in a single layer.
- Pot life 30-40 minutes: → ample working time for mixing, deairing and casting.
- Versatile processing: → can be cast, brushed or applied with a velour roller.
Technical Data
- Mixing ratio (weight): 100:40
- Mixing ratio (volume): 100:45
- Colour: clear
- Viscosity at 25°C: 300-400 cSt
- Maximum recommended thickness: 100 mm
- Density: 1.07 / 1.11 g/cm³
- Pot life: 30-40 minutes
- Demould time: 24-36 hours
- Exothermic peak (heat development during curing): 50-60°C
- Post-curing: 60°C for 15 hours
- Hardness at 25°C: 72-80 Shore D (after 15 days)
- Shelf life: approx. 12 months, tightly closed, stored dry between 18°C and 28°C
Processing
- Always wear protective gloves and safety goggles during processing and work in a well-ventilated area.
- Combine components A and B at a ratio of 100:40 by weight.
- Mix thoroughly: stir along the edges and across the bottom of the cup until a homogeneous mixture is obtained.
- Preferably pour the mixture into a second cup and mix again to avoid unmixed material on the wall.
- Process within the pot life of 30-40 minutes: cast, or apply with a brush or velour roller.
- Allow to cure for 24-36 hours. For optimal final properties, post-cure at 60°C for 15 hours.
⚠️ Note – thick castings and heat development: Epoxy cures exothermically. With large volumes or casting heights approaching the maximum 100 mm, the core can become very hot (exothermic peak 50-60°C, possibly higher for solid castings), which can lead to cracking, bubble formation or yellowing. Preferably cast thick pieces in multiple layers or smaller volumes.
Components A and B may only be mixed in the prescribed ratio; deviating from it leads to incomplete or tacky curing.
Applications
- Casting flexible, clear objects.
- Casting, covering and coating applications where flexibility is desired.
- Decorative and creative casting projects retaining transparency.
This product is intended for industrial and professional use. For larger quantities or custom products, please contact us at info@siliconesandmore.com or +31 (0)85 485 83 11.
Safety
Flexpox is a two-component product whose two parts are both classified as hazardous in liquid form. Component A (resin) is, among other things, suspected of causing cancer (H351) and may damage fertility (H360F); component B (hardener) causes severe burns and eye damage (H314). Both are toxic to aquatic life (H411). Avoid contact with skin and eyes, prevent inhalation of vapours and mist, and always work in a well-ventilated area with suitable personal protective equipment. For full information, please refer to the safety data sheets for components A (EC 251) and B (W 242).
Documentation
Data sheet (TDS) – Flexpox Flexible Epoxy Resin
Safety data sheet (SDS) – Flexpox component A (EC 251)
Safety data sheet (SDS) – Flexpox component B (W 242)
Product Properties
- Hardness75Shore DHardness of the cured material
- ColorClearColor of the finished product
- TransparencyTransparentDegree of transparency
- Viscosity350mPa·sViscosity of the uncured silicone
- Density1.09g/cm³Density of the cured material
- Mix ratio100:40Mixing ratio A : B
- Pot life35minutesWorking time after mixing
- Cure time1440minutesTime until full cure
Application
- Use caseCasting flexible clear objects and flexible coatingsIntended use
- Cure speedNormalHow quickly the material can be demoulded
Safety Information
Flexpox is a two-component product whose two parts are both classified as hazardous in liquid form. Component A (resin) is, among other things, suspected of causing cancer (H351) and may damage fertility (H360F); component B (hardener) causes severe burns and eye damage (H314). Both are toxic to aquatic life (H411). When processing, wear chemical-resistant gloves, safety goggles or a face shield and protective clothing. Prevent inhalation of vapours and mist and work in a well-ventilated area. For full safety information, please refer to the safety data sheets for component A (EC 251) and component B (W 242).| Safety Pictograms | Safety Data Sheets (SDS) |
|---|---|
GHS hazard pictograms
   
Required protection (ISO 7010)
     |
| Signal Word | H‑code | Hazard Statement | P‑codes | P‑statements |
|---|---|---|---|---|
| Danger | EUH071 | Corrosive to the respiratory tract | P260 P271 P284 |
|
| Warning | H302 | Harmful if swallowed | P264 P270 P301+P310 |
|
| Danger | H314 | Causes severe skin burns and eye damage | P260 P264 P280 P303+P361+P353 P305+P351+P338 P310 |
|
| Warning | H315 | Causes skin irritation | P264 P280 P302+P352 P333+P313 |
|
| Warning | H317 | May cause an allergic skin reaction | P261 P272 P280 P302+P352 P333+P313 P362+P364 |
|
| Danger | H318 | Causes serious eye damage | P280 P305+P351+P338 P310 |
|
| Warning | H319 | Causes serious eye irritation | P264 P280 P305+P351+P338 P337+P313 |
|
| Warning | H351 | Suspected of causing cancer | P201 P202 P280 P308+P313 P405 P501 |
|
| Danger | H360 | May damage fertility or the unborn child | P201 P202 P280 P308+P313 P405 P501 |
|
| Warning | H411 | Toxic to aquatic life with long lasting effects | P273 P391 P501 |
|
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Frequently asked questions
What is the delivery time for my order?
Orders placed and paid on working days are in most cases shipped the same day. Weekend orders are processed on the next working day.
Indicative delivery times: Netherlands usually within 1 working day, Belgium and Germany typically 1–2 working days, other countries depending on destination and carrier. These are guidelines, not guarantees: peak periods, public holidays or carrier delays can have an effect.
What is the return policy?
You have 30 days to return after receipt. Email info@siliconesandmore.com within 30 days of delivery with your name and order number. The full conditions are in our return policy.
How can I track my order?
As soon as your order has shipped, you'll receive a track & trace code by email. It can take up to 24 hours before the code is active.
I have a problem with my order – how do I reach you?
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Can I order as a business?
Yes. Apply for a business account; we review your application within 3 working days. After that you order while logged in and pay on invoice, with payment terms of 14 days after delivery.
EU businesses outside the Netherlands with a valid VAT number order with VAT reverse-charged (0%, intra-community supply). The VAT number is stored in your business account; it cannot be added to an order after it has been placed.