Addition Cured - Silicones
Pinkysil
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New RTV silicone that is approved 'Skin safe'.
Fast setting, with 6 min worktime, and 15 minutes for demolding, Pinkysil can be used for body casting, as well as copying any small detailed item. Picks up finest detail from fingerprints to sculpture marks. Soft, 18A hardness, suitable for delicate parts as it is able to flex away from the cast surface.
Pinkysil has proven to be a favourite for those artists working on miniature sculptures i.e model houses, cars, planes etc. The silicone is measured in equal parts before mixing and pouring. Some small molds have been made with less than 50gm of Pinkysil.
Ideas for leftovers !!!
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This little skull mold was made from our Medallions skull with 50gm of Pinkysil silicone. This mold is often used for those 'leftover' drops of resin, when a larger casting has been done. Each cast is only about 5-10gm and we are creating a collection of coloured skulls. These skulls are coloured EasyCast, and have been used in jewellery pieces, greeting cards and to decorate household items such as picture frames, containers and desk ornaments. For more medallion instructions check out the How To...
How to...make medallions with Pinkysil
Size: 500gm, 1kg, 2kg, 10kg
Technical Information:
Data Sheet - MSDS Part A - MSDS Part B
CloneFx
CloneFX is an addition curing RTV-2 silicone rubber primarily developed for life casting applications. This is a firmer silicone than Pinkysil, and when used for bodycasting, users should apply a generous vaseline coating over delicate parts of the body, particularly eyebrows and eyelashes, to aid in demolding the CloneFX when cured.
It is safe to use directly on the skin. CloneFX has an easy to use mix ratio of 1:1 and is coloured to ensure thorough mixing of the components. CloneFX will provide a mold that can reproduce the item many times over, unlike alginates that can only be used once.
TYPICAL PRODUCT USES
Life casting / body casting
Molds requiring a fast turn around time
Architectural restoration
Forensic detail
Fossils
Prosthetics and SFX
Size: 500gm, 1kg, 2kg, 10kg
Technical Information:
Data Sheet - MSDS Part A - MSDS Part B
Banana-Skin
Banana-Skin is a two-component silicone that cures at room temperature by a polyaddition reaction that may be accelerated by heating. It is designed as a 13 Shore A high tear strength rubber providing excellent physical properties for glove & skin molding applications. Banana-Skin is great for molds with very large undercuts. Banana-Skin has high elongation and a coloured catalyst for easy mixing. Molded parts can be produced without seams. Banana-Skin offers an extremely low mixed viscosity to enable the material to be poured into narrow openings.
New version now available, Yellow in colour.
Photo shows previous Blue version of Banana skin.
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Ideal for -
- Skin Molds
- Glove Molding
- Molds requiring a very soft silicone
- Molding parts with large undercuts.
Data Sheet - MSDS Part A - MSDS Part B
Silpression

Silpression can also be used for fast molds of small items such as jewellery pieces. We also used the Silpression to make some texture stamps to help with adding texture to our clay sculptures.
How to...make a mold with Silpression
How to...make texture stamps with Silpression
- Dental Impressions
- Life Casting
- Any Fast Turnover Moulding
- Texture Stamps
Size: 200gm
Data Sheet - MSDS Part A - MSDS Part B
ELASTOSIL® M RTV-2 Silicone Rubber
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The flexible mould-making material for perfect copies.
With ELASTOSIL® M silicone rubbers,Wacker-Chemie offers a great variety of customised moulding solutions for the mould and tool making sectors.
ELASTOSIL® M includes a wide selection of addition-curing grades for moulds used in vacuum casting processes.
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The preferred silicone when accurate detail and no shrinkage are a priority. Can be heat accelerated. Some products can be post cured to meet food safe requirements. New products are now available suitable for bodycasting.
Download the guide on processing RTV2 silicone rubbers
Download the brochure on mould making compounds for maximum precision
Wacker M4642
General purpose grade. Moderately hard, 37A,high extensibility & excellent mechanical strength. This is a much more runny silicone in its liquid state compared with other Wacker silicones. Can be mixed and processed much more easily. M4642 has a moderately firm hardness showing good definition particularly with high level of detail in the cast pieces.
If processed according to directions, will be classed as 'food grade safe' and can be used for molds for chocolates, sweets, icing etc.
Size: 550gm, 1.1kg, 5.5kg
| Consistency | Pourable Dark Red |
| Mix Ratio | 100/10 |
| Viscosity (mPa s) | 15 000 |
| Hardness (Shore A) | 37 |
M4642 Food compliance reference
Wacker M4644
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High resistance to polyurethanes & epoxy resin. Moderately hard, 40A, high mechanical strength. Preferred prototyping silicone. Once degassed to ensure clarity, items can be embedded and can be seen. Ensures casting material can be visible when pouring, to eliminate entrapped airpockets.
Size: 550gm, 1.1kg, 5.5kg
"New age bartender" with bottle opener implanted into hand. M4644 silicone showing 'bones'. Courtesy Massey University Design Student
| Consistency | Pourable Transparent |
| Mix Ratio | 100/10 |
| Viscosity (mPa s) | 50 000 |
| Hardness (Shore A) | 40 |
Data Sheet - MSDS Part A - MSDS Part B
M4644 Food compliance reference
Wacker M4670
High resistance to polyurethanes & epoxy resin. Hard, 55A, high mechanical strength.
Suitable for Low melt alloys. This is a very firm silicone giving high level of detail, however as it has a low degree of flexibility a matrix or multipart mold may be required to enable demolding safely and effectively.
Size: 550gm, 1.1kg, 5.5kg
| Consistency | Pourable Beige |
| Mix Ratio | 100/10 |
| Viscosity (mPa s) | 80 000 |
| Hardness (Shore A) | 55 |
| Data Sheet - MSDS Part A - MSDS Part B | |
RTV 3428
Pourable silicone that features 28A hardness, non-shrink cure which can be accelerated by the application of heat, with excellent long-term stability of the mechanical properties. RTV3428 has outstanding resistance to casting resins, and as it is translucent white on curing, can be tinted a wide range of colours.Ideal for :
- Prototyping
- molds of models with pronounced undercuts
- partial splitting of the mold if degassed to improve clarity.
- Texture Stamps
Size: 550gm, 1.1kg, 5.5kg
Data Sheet - MSDS Part A - MSDS Part B
Platsil Gel 10
This is a versatile silicone for making prosthetic makeups, small creatures and other special effects applications . Used for Prosthetic and Orthopaedic applications where a soft cushion-like rubber is required. Can be used in contact with the skin. The translucency allows for a wide variety of colour tinting. Platsil Gel 10 is a Prosthetic grade two component silicone that features:Very fast cure
1:1 mixing by weight
very soft 10A shore hardness
translucent white colour
There are accessories to thicken, retard and accelerate the material.
A unique 'dead' feel can be achieved by adding Smith's Deadener.
