Breif description

Pourable, addition-curing, two-component silicone rubber that vulcanizes at room temperature.

Special features:

- very good flow

- fast and non-shrink cure at room temperature which can be accelerated considerably by the application of heat

- low Shore A hardness (approx.30).

- high tear strength

- excellent long-term tability of the mechanical
properties of the vulcanizate

- outstanding resistance to concrete

Application:

Due to its outstanding resistance to concrete and superior mechanical properties, YJS-630 A/B is ideal for use in molds for makingconcrete reproductions of models with deep undercuts.

As a low-Shore, addition-curing RTV-2 silicone rubber, which cures without dimensional shrinkage, YJS-630 A/B is also extremely suitable for casting all other common reproduction materials, especially casting resins where absolutely accurate copies of models with pronounced undercuts are required.

Specification:

 

Typical general characteristics	Inspection Method	Value
Product data (Catalyzed A+B)		YJS-630
Hardness	Shore A	30±2
Mix Ratio	A:B	1:1
Color	/	translucent
Pot life	25 °C (77F)	30-40mins
Curing time	25 °C (77F)	3-4 hours
Mixed viscosity	mPa.s	3000±500
Tear-strength	kg/cm	≥13
Tensile-strength	M.pa	≥6.0
Elongation	%	≥650
Shrinkage	%	≤0.1%

Package：

* Small size:1kg/jar, 5kg/jar,10kg/jar
* General size:20kg/pail,25kg/pail,200kg/pail

Storage：

YJS-630 has a shelf life of at least 12 months in the sealed container between 5ºC and 30ºC. If the material is kept beyond 12 months it is not necessarily unusable, but a test should be performed on the product to check suitability to the application.