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Sealant Viksint U-2-28 (NT)

Viksint U-2-28 sealant is a pasty sealing material of pink or white color, which has the ability to transition from a pasty to a rubber-like state after mixing with catalyst No. 28 and hydrophobic liquid 136-41 at room temperature.

METHOD OF APPLICATION:

the main paste is mixed with a catalyst 28 and a hydrophobic liquid 136-41; to improve the adhesion of the sealant to the surface, a sublayer P-11 (cold drying) is used.

STORAGE CONDITIONS:
The sealing paste U-2 should be stored in warehouse conditions at a temperature from 0 to plus 30°C.
Catalyst No.28 should be stored in a hermetically sealed container in a room specially designed for storing flammable materials at a temperature from 0 to plus 30°C.
The hydrophobizing liquid 136-41 is stored in a warehouse at a temperature not exceeding 30°C in the manufacturer's container.
The P-11 sublayer must be stored in a hermetically sealed container in a room specially designed for storing flammable materials at a temperature from 0 to plus 30°C.
GUARANTEED STORAGE PERIOD:
The warranty period of storage of the sealing paste U-2 is one year from the date of manufacture.
The warranty period of storage of catalyst No. 28 in the manufacturer's container is one year from the date of manufacture.
The warranty period of storage of the hydrophobizing liquid 136-41 is one year from the date of manufacture.
The warranty period of storage of the P-11 sublayer is one year from the date of manufacture.

Packing: 5,575 kg and 22,3 kg.

Sealant Viksint U-2-28 (NT)

Application:

Sealant Viksint U-2-28 are used for surface sealing of metal joints and for sealing equipment, operating in air at a temperature from -60 to +250°C, also is used for sealing in a close space without air access.

Viksint U-2-28 is designed for sealing riveted, bolted, welded joints of structures and devices, including intra-seam sealing (in a closed volume without air access), as well as for filling plug connectors.

Silicone sealant are used in aircraft and aerospace industry, machine building, electronics, shipbuilding, automotive, civil and industrial engineering.

Sealant Viksint U-2-28 (NT)

One of the important features of siloxane material are durability, resistance to sudden temperature swings, high vibration, radiation and UVR. 

The sealant has heat resistance from -60 to +250°C (short-term 300°C) and dielectric properties.

Does not cause corrosion of aluminum, titanium alloys, oxidized magnesium, stainless and carbon steels, cadmium-plated and galvanized passivated.

Sealant Viksint U-2-28 (NT)

Name of the indicator Standard according to TU
I. Color:  white, pink
II. Density, g/cm3 2,2
III. Viability, h 3-8
IV. Physical and mechanical properties
1. Conventional tensile strength, MPa, not less than  1,9
2. Relative elongation at break,% not less than  220
3. Shore A hardness, conventional units, within  35-50
4. Bond strength when peeling off from Al alloy D16 (rupture by material or peeling by mesh), kN/m, not less than  1,3
5. Specific volume electrical resistance at a temperature of 20°C, Ohm*cm 1-1013
6. Dielectric constant at a frequency of 10 6 Hz, not more than  6,7
7. Electrical strength at 20°C, kV/mm, not less than  5,0