VIKSINT U-1-18 organosilicon sealant
Viksint U-1-18 two-component sealant is a silicone sealant consisting of two parts: U-1 paste and No. 18 catalyst. The paste is produced on the basis of dimethylsiloxane synthetic heat-resistant low molecular weight organosilicon rubber. Appearance: white pasty material capable to cure at ambient temperature while transitioning into a rubber-like state. A slight release of polymer during storage is acceptable, which disappears with stirring. Viksint U-1-18 sealant is designed for surface sealing of metal joints made of stainless steel, aluminum and titanium alloys and for sealing equipment operating in air environment at temperatures from -60 to +300 °C under conditions of vibration, shock and repetitive loads. U-1-18 sealant does not cause corrosion of metals and alloys, including copper. The working temperature range of U-1-18 is -60 to +300°C. To ensure adhesion of the sealant to the surfaces of parts, sublayers are used: hot drying P-90 or cold drying P-11 in combination with P-9 or with wiping paste No. 2. Sealant is resistant to adverse weather factors, radiation, ultraviolet. It has stable dielectric properties. Has high elasticity. Designed to be used in all climatic conditions. It is used in the space industry, aviation industry, electronics, precision machinery industry, energy sector, construction and many other industries. The sealants are also used as a material for casting molds in the production of art and decorative items. Viksint U-1-18 sealant with “NT” index is supplied to aviation industry enterprises.
Viksint U-1-18 sealant is designed for surface sealing of metal joints made of stainless steel, aluminum and titanium alloys and for sealing equipment operating in air environment at temperatures from -60 to +300 °C under conditions of vibration, shock and repetitive loads.
Specification 38.303-04-04-90
Technical characteristics
Parameters |
U-1-18 |
У-1-18 NT |
Density, g/cm3 |
2.2 |
|
Pot life, h, within the range of or minimum |
0.5-6.0 |
|
Nominal tensile strength, MPa, minimum |
2.1 |
2.5 |
Elongation at break, %, minimum or within the range of |
160 |
170 |
Shore A hardness, units, within the range of or minimum |
50-60 |
|
Bond strength when peeled from D16 aluminum alloy (material rupture or peeling in grid), kN/m, minimum |
1.4
|
Packing:
Metal and/or polymer containers,
Catalyst – glass bottles
Guaranteed shelf life:
12 months.
Guarantee:
The product is manufactured according to the Specification. The product meets the stated information within the shelf life and subject to storage conditions.