R&G Silicone rubber ADDV-25, package /500g

Product number: 9777848
Manufacturer number: 4152101
EAN-Code: 4901331537813


In stock. Usually ships within 1 business day.

Description "R&G Silicone rubber ADDV-25, package /500g"
ADDV-25 is a pourable, addition-curing 2-component RTV silicone rubber with special suitability for the reproduction of models with undercuts using polyurethane and epoxy resins.

As both components are matched to each other in batches, we only supply complete containers. It is not possible to purchase silicone and crosslinker separately.

- Excellent flowability
- Fast, shrinkage-free vulcanization at room temperature
- Good tear and tear propagation resistance

Technical data:
Mixing ratio: 1 : 1 parts by weight component A : component B
Working time (at 25 °C): 30 - 50 minutes
Demouldable (at 25 °C): 4 - 5 h

Colour: Translucent (translucent but not transparent)
Mixed viscosity: 6,800 ± 1,500 mPas
Hardness Shore A: 25
Tear strength: 9.5 ± 1.0 N/mm²
Elongation at break: ? 450 %
tear resistance: 31 ± 2 N/mm
Linear shrinkage: ? 0,1 %.

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

If heat is added during curing (e.g. in a heating cabinet or oven), the vulcanisation time is reduced by half if the temperature is increased by 10°C. Heat thus accelerates the cross-linking reaction. The maximum recommended curing temperature is 70 °C.

Cannot be processed with our universal colour pastes

We recommend that a test be performed by pouring the mixture of the two components onto a limited area of the mould. Please use a suitable degassing device to achieve smooth cross-linking, as the chamber may become contaminated if other products are degassed in it.