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TOMPS Value RTV Silicone Catalyst 25g to 1 Kilo

(£3.95 inc tax)
10 days
Price in points: 181 points
Reward points: 3 points
Weight: 1.20 kg per item
Value Silicone Catalyst
In stock
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RTV Silicone Catalyst. Compatible with any of the TOMPS Value Silicones range. THIS CURATIVE IS NOT COMPATIBLE WITH ACC Silicones RTV! Available as either Blue/Green or Red/Orange (Slow and Fast respectively).

Use the table below to assess which catalyst is better for your job, with detailed potlifes and demould times. Fast & Shore A15 is the default option, the fast version. Note times relate to lab conditions where temperature was 20-23 Celsius and Relative Humidity of around 65%. Colder temperatures will lengthen times, the reverse for warmer conditions, within reason. Heat cannot be applied to simply speed up the cure unlike an addition cure silicone. More humid conditions will also accelerate cure.

Note the following information: Potlife relates to the mixing and pouring time, timed from the moment catalyst touches the base silicone, Tack Free Time indicates the time at which the RTV Silicone will have a skin on it and be tack free to touch, Demould Time is the earliest time at which you may demould and 95% Cure Time represents the earliest point at which you should consider using the mould. The longer you can leave silicone to cure the less chance of deformation during demould. If using a portion of the catalyst at one time note the addition ratio is 3% or 30g catalyst per kilo base.

With the fast catalyst on A15/A20 or A25/A30, the addition rate can be reduced to 2% to give a couple extra minutes on pot life without affecting the final cure by more than about 45 minutes.

Catalyst Colour


Tack Free Time

Demould Time

95% Cure Time


40-105 Minutes

4-6 Hours

6-10 Hours

14-24 Hours


7-10 Minutes

1 Hour

3-4 Hours

6-8 Hours

Datasheets and Safety:
Please note that we no longer print and include datasheets with your order. All datasheets are available for download on the item where your purchase was made. It is the responsibility of the purchaser to download and read the information. Please think of the environment before deciding to print!

Technical Data Sheet (TOMPSVALUE_TECH.pdf, 221 Kb) [Download]

Material Safety Data Sheet (MSDS / CoSHH) BLUE (TOMPS_VALUE_BLUE_MSDS.pdf, 202 Kb) [Download]

Material Safety Data Sheet (MSDS / CoSHH) RED (fast) (TOMPS_VALUE_RED_MSDS.pdf, 202 Kb) [Download]

We do not ship this product to the following countries:

  Afghanistan     Aland Islands     Albania     Algeria  
  American Samoa     Andorra     Angola     Anguilla  
  Antarctica     Antigua and Barbuda     Argentina     Armenia  
  Aruba     Asia-Pacific     Australia     Austria  
  Azerbaijan     Bahamas     Bahrain     Bangladesh  
  Barbados     Belarus     Belgium     Belize  
  Benin     Bermuda     Bhutan     Bolivia  
  Bosnia and Herzegowina     Botswana     Bouvet Island     Brazil  
  British Indian Ocean Territory     British Virgin Islands     Brunei Darussalam     Bulgaria  
  Burkina Faso     Burundi     Cambodia     Cameroon  
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  Chad     Chile     China     Christmas Island  
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  Cook Islands     Costa Rica     Cote D'ivoire     Croatia  
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  Denmark     Djibouti     Dominica     Dominican Republic  
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  Equatorial Guinea     Eritrea     Estonia     Ethiopia  
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  Islamic Republic of Iran     Isle of Man     Israel     Italy  
  Jamaica     Japan     Jersey     Jordan  
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  Korea, Republic of     Kuwait     Kyrgyzstan     Laos  
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  Morocco     Mozambique     Myanmar     Namibia  
  Nauru     Nepal     Netherlands     New Caledonia  
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  Niue     Norfolk Island     Northern Mariana Islands     Norway  
  Oman     Pakistan     Palau     Palestine Authority  
  Panama     Papua New Guinea     Paraguay     Peru  
  Philippines     Pitcairn     Poland     Portugal  
  Puerto Rico     Qatar     Republic of Serbia     Reunion  
  Romania     Russian Federation     Rwanda     Saint Lucia  
  Samoa     San Marino     Sao Tome and Principe     Saudi Arabia  
  Senegal     Serbia     Seychelles     Sierra Leone  
  Singapore     Sint Maarten     Slovakia     Slovenia  
  Solomon Islands     Somalia     South Africa     Spain  
  Sri Lanka     St. Helena     St. Kitts and Nevis     St. Pierre and Miquelon  
  St. Vincent and the Grenadines     Sudan     Suriname     Svalbard and Jan Mayen Islands  
  Swaziland     Sweden     Switzerland     Syrian Arab Republic  
  Taiwan     Tajikistan     Tanzania, United Republic of     Thailand  
  Togo     Tokelau     Tonga     Trinidad and Tobago  
  Tunisia     Turkey     Turkmenistan     Turks and Caicos Islands  
  Tuvalu     Uganda     Ukraine     United Arab Emirates  
  United States     United States Virgin Islands     Uruguay     Uzbekistan  
  Vanuatu     Vatican City State     Venezuela     Viet Nam  
  Wallis And Futuna Islands     Western Sahara     Yemen     Zaire  
  Zambia     Zimbabwe