Silicone rubber type 7 I kneadable silicone, soft

Polyment GmbH

  • €37,90
    Unit price€75,80 per kg
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Silicone rubber type 7 I kneadable silicone, soft

Product information "Silicone rubber type 7 kneadable silicone kneadable soft Shore 30 100:5"


Silicone rubber type 7 kneadable silicone kneadable soft Shore 30 100:5
Kneading silicone soft is a condensation-curing kneading silicone with a final hardness of Shore A 30, which is easy and safe to dose and process.
The mixing ratio is 100:5.

Due to its high drawing accuracy, it offers a precise impression
and is extremely dimensionally stable due to low shrinkage.
It does not stick, is physiologically harmless and has excellent mechanical properties.
It is therefore very well suited for doubling, for example in the area of ​​model and mold making
or as a molding and design compound as well as for molding on vertical objects or surfaces.

The kneading silicone TFC silicone type 7 is kind to the skin and is used, among other things, for impressions in otology (ear medicine) to make ear impressions for fitting hearing aids.
Other areas of use, for example in criminalistics for recording footprints or in the assessment of structural damage to walls and ceilings.

The advantage of the TFC kneading silicone type 7 lies in the problem-free processing, even of small quantities, and the very quick demoulding.

Processing instructions:

Take (weigh) the required amount from component A (white), add the required amount of 5% of the paste-like crosslinking component B and mix/knead evenly.

Mixing information in drops:

0.5 g of crosslinking agent corresponds to approx. 1 cm of paste
500g silicone = addition 50cm paste = 25g
100g silicone = addition 10cm paste = 5g
50g silicone = addition 5cm paste = 2.5g


The compound can then be applied and removed from the mold after approx. 5-6 minutes.
If possible, use vinyl gloves for removing and mixing, never latex, as this increases the setting time or prevents it entirely.
Finally, mixing with bare hands shortens the setting time.

Technical details

- Mixing time: approx. 60 seconds manually
- Processing time: approx. 2-3min
- Demouldable after: 3-7 min
- Density at 23°C : 1.42 g/cm
- Linear dimensional change after 5 days at 23°C 0.7% max.
- Hardness Shore A30

The times given refer to a temperature of 23 degrees C and an exact mixing ratio of 100:5.
The times are shortened at higher temperatures and lengthened at lower temperatures.
A higher dosage of the crosslinker does not accelerate the setting process.


Mixing time at 23 degrees Celsius: 1 min
Product type: silicone
Colour: whitish
Mixing ratio: 100:5
breaking load: 2.8N/mm2
Processing time at 23 degrees Celsius: 2 mins, 2-3 mins
Viscosity: kneadable
Curing time at 23 degrees Celsius: 3-7 mins, 5 mins
Shore hardness: A30
Elongation at break (in %): 250
specific weight: 1.42
tear strength: 6.8N/mm2
Dimension change in % after 24h: 0.7

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