Condensation-crosslinking silicones react on the crosslinker under separation of a reaction product. This is generally a short-warp alcohol which evaporates from the system during the reaction. Therefore, Condensation-crosslinking silicones are not suitable for the use in closed moulds. However, they have in so far an advantage over the addition-crosslinking silicones as they are to a large extent insensitive to poisonings. The initial number of these systems is odd; the crosslinkers are marked with the letter C.

ProductProperties / field of applicationCrosslinker typeCrosslinker addition %Colour of caoutchoucDensity g/cm³Mixed viscosity at RT mPasPot life at RT minTime required up to the demouldability hoursTensile strength
DIN 53504 N/mm²
Elongation at break
DIN 53504 %
Resistance to tear propagation ASTM D 624 B N/mmShore A-hardness
DIN 53505
Data Sheet
NEUKASIL
RTV 1703
high resistance to initial tearing and tear propagation, can be made thixotropic, good flow properties, for mould making and artistic casting, suitable for epoxy resins, polyurethanes, wax1703 Comp. B1
1703 Comp. B2
SI - C
5
5
0,1 - 1,0
white1.2224,000
32,000
80
15
-
24
12
-
4
3.5
-
800
750
-
>20
>20
-
23
23
-
Bild-Merkblatt
NEUKASIL
RTV 102
good resistance, against resins, low shore hardness, with C 02 S short pot lifeC 02
C 02 S
5
5
white1.120,000
16,000
100
15
20
10
3.0
2.5
450
450
20
20
21
19
Bild-Merkblatt
NEUKASIL
RTV 103
good resistance against resins, medium shore hardness, with C 02 S short pot lifeC 02
C 02 S
5
5
white1.137,000
48,000
90
15
20
10
2.5
2.5
420
420
20
20
28
26
Bild-Merkblatt
  • RTV 102 and RTV 103 can be mixed with each other to adjust an individual Shore A-hardness.
  • Liquid silicone ingredients can be removed by means of our NEUKASIL silicone and wax remover.
ProductProperties / field of applicationCrosslinker typeCrosslinker addition %Colour of caoutchouc Mixed viscosity at RT mPasPot life at RT minTack-free in hoursShore A hardness DIN 53505 (24h)Shore A hardness DIN 53505 (7d)Tensile strength N/mm²
DIN 53505 S2
Elongation at break % DIN 53505 S2Data Sheet
NEUKASIL
RTV 125
high resistance to initial tearing and tear propagationt, one crosslinker each with a good resistance to styrene (C 125 PE) and a good resistance to polyurethane (C 125 PU), can be made thixotropicC 125 PE
C 125 PU
SI - C
5
5
0,1 - 1,5
Bernstein
Creme
Transluzent
25.000
25.000
-
70
70
-
26
26
-
24
24
-
28
28
-
3,5
5,5
-
800
650
-
Bild-Merkblatt
NEUKASIL
SN 1971
high resistance to initial tearing and tear propagation, very good flow properties

mould making
C 02
C 04 NEW
5
20
white
white
9,000
4,000
95
60
24
24
13
10
15
11
3
2
370
420
Bild-Merkblatt