Silicone Casting

Silicone_Mold-makingSilicone

Silicone mold materials are used to reproduce fine detail in original models to allow for reproduction of the original. Silicone molds are typically used to reproduce the original model in wax, plaster or concrete. 

Silicone mold materials are designed for use in jewelry casting, art bronze casting, life casting, model making, rapid prototyping, concrete casting, architectural restoration, taxidermy and special effects.

Silicone Products

RTV2 Silicone Rubber – Pourable Molding Rubber
R&R offers a full range of silicone rubber, room temperature vulcanized (RTV2) materials, for model and mold making. RTV2 silicone rubber is ideal for use in mold making applications including: rapid prototyping, jewelry, glass art, art sculpture, and concrete molding.

RTV2 silicone rubber is platinum-curing and composed of two components, base and catalyst, that mix together and vulcanize at room temperature.

Why use RTV2 silicone rubber?

  • High dimensional stability over time
  • Easy to use
  • Most stable polymers available, offering superior reliability
  • Vulcanization time can be adjusted, allowing flexible application
  • Suited to polyurethane casting materials
  • Products are non-toxic
  • 1:1 mixing ratio formulas provide easy mixing
  • 10:1 mixing ratio formula for transparency

RTV2 silicone rubbers provide:

  • Excellent durability over time
  • Excellent stability over time
  • Zero shrinkage
  • Mixing ease
  • Increased production speed

Name

Mixing Ratio

Form

Color

Working Time

Setting Time

Hardness (ShA)

HT 42

1:1

Liquid

Grey

22-26 minutes

3 hours

42

HT 45 LT

1:1

Liquid

Translucent, Crystal Green

10-12 minutes

1 hour,
20 minutes

45

RTV 3135

1:1

Liquid

Translucent,
Red

20-22 minutes

3 hours

33

XTX 45

10:1

Liquid

Transparent

1 hour

12 hours

45

ZA 10 Orange

1:1

Liquid

Orange

15 minutes

1 hour,
45 minutes

10

ZA 10
Translucent

1:1

Liquid

Translucent

15 minutes

55 minutes

11-13

ZA 13 Mold
WT45

1:1

Liquid

Translucent

40-50 minutes

2 hours,
50 minutes

13

ZA 22 Mold

1:1

Liquid

Blue

14 minutes

1 hour

22

ZA 22 Spray

1:1

Liquid

White

15 seconds

9 minutes

22

ZA 25 Thixo

1:1

Thixotropic

Grey

30 minutes

10 hours

25

ZA 28 Mold

1:1

Liquid

Green

10-12 minutes

1 hour

28

ZA 35 Mold

1:1

Liquid

Yellow

12-15 minutes

1 hour

35

ZA 35
Mold Fast

1:1

Liquid

Light Green

6 minutes

20 minutes

35

ZA 40 LT

1:1

Liquid

Green

15 minutes

3 hours

40

ZA 40 Thixo

1:1

Thixotropic

Pink

6 minutes

15 minutes

40

ZA 50 LT

1:1

Liquid

Blue

5-20 minutes

3 hours

50

ZC 20-120

5:100

Liquid

 

90 minutes*

24 hours*

23 ± 3

ZC 825

1:1

Liquid
(high density)

White

39 minutes

20 hours

21

*The working time and setting time depends significantly on the temperature and air-humidity. They also vary depending on the size of the cured item.