Crystacal R Plaster
Item: CRYS
Description
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.
SPECIFICATIONS
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 Law on 12th May 2025
"An excellent plaster for producing detailed, long lasting press moulds. It would be very helpful if the expiry date of the original bag of plaster was written on the lables of the smaller decanted quantities. Very rapid delivery as usual. Many thanks."
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."
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