Crystacal R Plaster Crystacal R Plaster

Crystacal R Plaster

Item: CRYS

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Crystacal R is a formulated hemihydrate plaster (CaSO4.1/2H2O) produced from naturally occurring high purity gypsum mineral.  

White in colour, Crystacal R plaster is used to make hard casts with fine reproduction of detail. It is used in the manufacture of glass-reinforced-gypsum (GRG) structures, decorative plasterwork, giftware, dental models, and more.

When stored under dry conditions and in its original packaging, Crystacal R plaster has a specified shelf life of 9 months, that commences from the date of manufacture that is printed on each sack.


Plaster/Water Ratio: 100/35

Working Time: 15 Minutes

Demould Time: 18 Minutes

Expansion: 0.4%

Compressive Strength: 55 Mpa

Shelf Life: 9 Months


Customer Reviews

By Malcolm on 11th April 2023
"Wonderful stuff. Thought I'd try this plaster out. Very good on fine detail and robust when used for press moulding."
Star Rating 5
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