+39 (02) 9011 9921       atosbesana@atosbesana.it       via Milano 44/46 - Cesano Boscone (MI)

Silicone rubber for goldsmithing

Silicone rubber for goldsmithing

in stock

ATOS BESANA s.r.l. produces different types of high quality and high temperature resistance silicone rubbers realised through a very equipped analysis laboratory for a continuous research and development of our products as the market requires and modern technologies.

We can group the different silicone rubbers in four families:

  • Silicone rubbers for zinc alloys (THT series with very high resistance to the temperature);
  • Silicone rubbers for lead/tin/bismuth alloys (MEX series);
  • Silicone rubbers for resins (with low vulcanisation temperature);
  • Silicone rubbers for lost wax (MCF series).

The standard vulcanisation temperature is normally 175/180°C but all our silicone rubbers can be realised at 120°C or 80/90°C on request.

The advantage of lower vulcanisation temperature is a lower shrinking during the vulcanisation cycle as well as the possibility to use resin, plastic, wood and wax models which normally have deformations and broking for higher vulcanisation temperature and pressure. See the following technical label :

VULCANISATION TEMPERATURE

VULCANISATION TIME

SHRINKING

SUGGESTION

175/180 °C

2 – 2,5 minutes for each mm. of thickness

3,0-4,0%

Standard vulcanisation pressure

120 °C

2,5 – 3 minutes for each mm. of thickness

2,0-2,5%

Low vulcanisation pressure

80/90 °C

3 – 3,5 minutes for each mm. of thickness

0,5-1,0%

Low vulcanisation pressure

Available besides a big range of casting and moulding accessories.

Contact us for more and detailed technical information.

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Description

COLOUR HARDNESS SHORES APPLICATION VULCANISATION TEMPERATURE
NCR 40
40 ± 2
 Very high elongation, it is used for very undercut pieces, easy to cut thanks to the transparent colour
120°C (on request 80/90°C)
YELLOW CAST
40 ± 2
 Very high elongation, it is used for very undercut pieces, replace for the CASTALDO Yellow silicone rubber
120°C (on request 80/90°C)
LIGHT-BLUE MCF
41 ± 2
 High elongation, it is used for very difficult pieces
180°C (on request 80/90°C or 120°C)
YELLOW MCF
44 ± 2
 Good elongation, it is used for difficult pieces
180°C (on request 80/90°C or 120°C)
PINK MCF
45 ± 2
 Good elongation, it is used for medium difficult pieces
180°C (on request 80/90°C or 120°C)
WHITE MCF
45 ± 2
 Good elongation, it is used for medium difficult pieces
180°C (on request 80/90°C or 120°C)
ORANGE 50 MCF
50 ± 2
 Good elongation, it is used for medium difficult pieces
80/90°C (on request 120 °C)
FUXIA MCF
50 ± 2
 Good elongation, it is used for medium pieces
180°C (on request 80/90 °C or 120°C)

Our factory reserves to modify the technical and dimensional characteristics as market requires.

The silicone rubbers are normally supplied in a box of Kg. 25/30, containing sheets of mm. 300x300x6 (the rubber NCR 40 TRANSPARENT is supplied in sheets of mm. 10 because it is too much soft). bida).

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