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Flexible casting foam, Poly foam F-3

Poly foam F-3 is a two part self-skinning flexible polyurethane foam. The p.u. foam F-3 has a “free-rise density” of 3 lb / ft³ but should be cast at a density of 5 to 8 lb / ft³ to obtain a good surface detail and mold fill. The flexible foams can be used well as fillings in fast casting resins, epoxy or siliocne / polyurethane rubbers for making props, tools, art objects, decorative or functional applications or for parts that have to be light weight. These Poly Foams can be cast in our Eurosil (addition) and SG C-Sil silicone rubber molds or in our polyurethane rubbers that are pre-coated with release agent such as our release agent Pol-Ease 2300 or release agent VL.

The PolyFoam F-3 is a foam with 2A:1B mixing ratio and has a viscosity of 2,000 cP. The Poly foam has a cream time of 25 seconds, rise time of 1.5 minutes. After 3 minutes (tack-free time) the stickiness of the foams will decrease and you will see a skin around the foam. This skin is from the foam itself (self skinning). The F-5 foam can be removed from the mold after 10 minutes. Since the skin of the product automatically arises from the product, maximum foam will develop in the mold and on the surface. The Poly foam can also be colored with the poly paste and poly colors.

SynTec® produces “flexible” and “Rigid” polyurethane casting foams (PolyFoams). The Flexible foams are available in two variants: the PolyFoam F-3 and PolyFoam F-5 (molded density 8-15 lb / ft³). The rigid, hard version is available in R-2, R-5 and R-8.


Set 3 KG (1 kg A + 2 kg B)
Set 15 KG (5 kg A + 10 kg B)
Set 54 KG (18 kg A + 36 kg B)
Set 612 KG (204 kg A + 408 kg B)

Mix ratio: 1A : 2B
Viscosity (cP): 2000
Cream Time: 25 Sec.
Rise Time: 1,5 min.
Tack Free Time: 3 min.
Free Density: 3 min.
Molded Density: 5-8 lb/ft3




Mandatory information according to Regulation (EU) 2020/1149 regarding diisocyanates:
From August 24, 2023, adequate training is required for industrial or professional use.
More information can be found at feica.eu/Puinfo and https://safeusediisocyanates.eu/

Safety Information:

UFI: PolyFoam F-3 Flexible Casting Foam Part A: 6J40-508J-300J-40YC
UFI: PolyFoam F-3 Flexible Casting Foam Part B: MT40-P0AR-1001-31QJ

Personal Protective Equipment:


Hazard Pictograms:


GHS: 07 Irritant, GHS 08 Health Hazard

Contains: Polymeric methylenediphenyl diisocyanate (MDI) (Include isomers and oligomers.)
CAS# 9016 – 87 – 9, EC # 905 – 804 – 3.

CLP/GHS (No 1272/2008): Acute Tox. (Inhalation) – Cat. 4Skin Irrit. – Cat. 2, Eye Irrit. – Cat 2,
Resp. Sens. – Cat. 1, Skin Sens. – Cat. 1, Carcinogen – Cat. 2, Spec. Target Organ Tox. – Single Exp. Cat. 3 (Resp.
Tract),Spec Target Organ Tox – Rep. Exp. Cat. 2 (Resp. Tract).

Hazard Phrases:
H315 Causes skin irritiaton
H317 May cause an allergic skin reaction.
H319 Causes serious eye irrit.
H332 Harmful if inhaled.
H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled.
H335 May cause respiratory irrit. H336 H351 May cause drowsiness or dizziness. Suspected of causing cancer.
H373 May cause damage to lungs and respiratory system through prolonged or repeated exposure.

Precautionary Phrases
P203 P260 Obtain, read and follow all safety instructions before use. Do not breathe fumes, vapors, mists or sprays.
P264 Wash thoroughly after handling.
P271 Use only outdoors or in a well- ventilated area. P280 Wear protective gloves, eye protection, and face protection.
P284 In case of inadequate ventilation, wear respiratory protection.
P302+P352 IF ON SKIN: Wash with plenty of soap and water.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several min. Remove contact lenses, if present and easy to do. Continue rinsing.
P317 P318 Get medical help. IF exposed or concerned, get medical advice.
P319 Get medical help if you feel unwell.
P333+P317 If skin irrit. or rash occurs: Get medical help.
P337+P317 If eye irritation persists: Get medical help.
P342+P316 If experiencing respiratory symptoms: Get emergency medical help immediately.
P362+P364 Take off contaminated clothing and wash before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of contents and container in acc. with local, regional, and national regulations.

Supplemental Info:
Individuals sensitized to isocyanates should discontinue use. Long-term overexposure to isocyanates may cause lung damage.
This is one part of a two-part system. Read and understand the hazard information on part B before using.


GHS: 08 Health Hazard

Contains: Dibutyltin dilaurate (<0.3%) CAS# 77-58-7.

GHS Classification: Toxic to Reproduction Category 1B.

Hazard Phrases:
H360 May damage fertility or the unborn child.

Precautionary Phrases:
P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood. P280 Wear protective gloves, protective clothing, eye protection and face protection.
P308+313 If exposed or concerned: Get medical advice/attention.
P405 Store locked up.P501 Dispose of contents and container in accordance with local, regional and national regulations.

Supplemental Information:
May cause skin and eye irritation. This is one part of a two-part system. Read and understand the hazard information on part A before using.


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