In Stock

Clear Silicone Catalyst for Economy Rubber

To be used only with Economy Silicone Rubber Base

Add 5% of catalyst by weight to silicone rubber base. Please use a precise electronic scale to weigh the rubber and catalyst.

Mixing proportions and temperature:

  1. Below 0°C regardless of how much catalyst is added, the rubber will react very slowly, and never fully cure.
  2. Below 5°C  the rubber will react very slowly and cannot be cured within 24 hours.
  3. Below 15°C  the working time is approx. 30-60 minutes, with a curing time of about 12-24 hours.
  4. Temperatures about 25°C, the working time is about 15-30 minutes, with a curing time of about 4-6 hours.
  5. Temperatures about 35-40°C , the working time is about 10-15 minutes, with a curing time of about 2-3 hours.

£2.50 - £40.00

Next Day Delivery*

We endeavour to dispatch all order within 24 hours, but please allow 3-5 working days for delivery (due to current global supply chain issues).

Shipping Information

Our shipping costs are worked out by the gross weight of your order delivered to your address. NB: We do not currently ship internationally (UK only).

Name Polysil Economy Silicone Rubber
Appearance White
Mixing ratio of curing agent (%) 5
Hardness (A°) 23 ± 2
Density (g/cm3) 1.08
Viscosity (mPas           -25°C) 21000 ± 9000
Tensile strength (Mpa) ≥4.3
Tear strength(kgf/cm) ≥25
Elongation break (%) ≥480
Shrinkage (%) ≤0.2

Catalyst Safety Information:

Hazard statements:
H226 Flammable liquid and vapour.
H315 Causes skin irritation.
H317 May cause an allergic skin reaction.
Precautionary statements
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources.
No smoking.
P261 Avoid breathing dust, fume, gas, mist, vapours and/or spray.
P264 Wash skin thoroughly after handling.
P280 Wear protective gloves/ protective clothing/ eye protection/ face protection/ hearing
P303 + P361
+ P353
IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with
P370 + P378 In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
Contains Bis[(2-ethyl-2,5-dimethylhexanoyl)oxy](dimethyl)stannane; Methyltrimethoxysilane

First Aid Measures:

First Aid responders should pay attention to self-protection and use the recommended protective
clothing (chemical resistant gloves, splash protection).
Inhalation: Move person to fresh air and keep comfortable for breathing. If not breathing, give
artificial respiration; if by mouth to mouth use rescuer protection (pocket mask, etc). If breathing is
difficult, oxygen should be administered by qualified personnel. Call a physician or transport to a
medical facility.
Skin contact: Remove material from skin immediately by washing with soap and plenty of water.
Remove contaminated clothing and shoes while washing. Seek medical attention if irritation or rash
occurs. Wash clothing before reuse. Discard items which cannot be decontaminated, including leather
articles such as shoes, belts and watchbands. Suitable emergency safety shower facility should be
available in work area.
Eye contact: Flush eyes thoroughly with water for several minutes. Remove contact lenses after the
initial 1-2 minutes and continue flushing for several additional minutes. If effects occur, consult a
physician, preferably an ophthalmologist. Suitable emergency eye wash facility should be available in
work area.
Ingestion: If swallowed, seek medical attention. Do not induce vomiting unless directed to do so by
medical personnel.