Silicone rubber KDSV-25 WHITE (set of two components)

KDSV-25 WHITE is a pourable, soft, condensation-curing silicone rubber that has been specially developed for mould making. Its main characteristics are its high elasticity and flexibility, which makes it ideal for moulding components with large undercuts. This means that the rubber can easily capture complex geometries and mould details without cracking or deforming. Thanks to its pourability, the silicone rubber can also flow into the smallest gaps, which enables high precision in mould production.

KDSV-25 WHITE cross-links without shrinkage, which could impair the accuracy of detail.

Properties:

• Good flowability
• Fast vulcanisation at room temperature
• Good tear and tear propagation resistance

Plaster and casting resins such as polyester resin, polyurethane resin and epoxy resin are particularly suitable for the production of replicas. To protect the moulds, we recommend the use of a wax release agent as a protective film, especially when casting with epoxy resin (see below).

Processing

Standard:

Mixing ratio: 100 : 2 parts by weight component A : component B
Processing time: approx. 40 minutes

Alternatives:

To achieve optimal results, we recommend mixing ratio 100 : 2 or 100 : 3

Processing time (100 g in a cup at 23 °C, humidity 50 %):
100 : 2 = approx. 40 minutes
100 : 3 = approx. 30 minutes

No heat of reaction occurs during vulcanization so that even larger quantities (e.g. 10 kg) can be poured without the risk of overheating.

Technical data:

Colour: White
Dyeing: R&G Universal Color Pastes (colour differs because of the basic colour of the silicone)
Mixing viscosity: 15.000 ± 2.000 mPa·s
Shore A hardness: 25 ± 2
Tensile strength: > 4.9 N/mm²
Elongation at break: > 480 %
Tear resistance strength: > 31 N/mm
Shrinkage (after 7 days): ≤ 0.3 %

Additional information:

Customer information:
The release agent Semiperm™ Monofilm in combination with PARTALL® Coverall Film PVA is suitable as a safe release agent for silicone moulds. This combination of release agents provides a barrier layer so that casting with epoxy resins is also possible without any problems. The service life (durability) of the moulds is significantly extended.
The release agent Semiperm™ Monofilm is applied with a brush. After flash-off, PARTALL® Coverall Film PVA is applied, also with a brush or sponge. For more information on processing, see the release agents.
PARTALL® Coverall Film PVA is transferred to the casting, washed off with water after demolding and reapplied before each impression.

New: We now supply our packages (up to 5.2 kg) with a dispensing pipette.*

* In general, we recommend a dispensing pipette for exact dosing of smaller quantities, and a dosing syringe for a little larger quantities. Mixing vessels with smooth walls and smooth bottoms are particularly suitable for mixing.