Silicone sealants

Vixint K-18

Article ID
CT-987

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Description and specifications

The organosilicon compound Viksint K-18 is a composition of viscous flowing consistency, consisting of paste "K" and catalyst No. 18.

Compound Viksint K-18 is intended for sealing electrical and radio equipment operating in an air environment in conditions of high humidity in the temperature range from minus 60 to plus 250 oC.

Compound Viksint K-18 is not recommended for use in products made of unprotected copper and brass.

Packaging: 10.85 kg.

Storage conditions:
Sealing paste "K" should be stored in warehouse conditions at a temperature of 0 to plus 30 oC.
Catalyst No. 18 should be stored in closed warehouses at a temperature of 0 to 25 oC.
Sublayer P-11 should be stored in a hermetically sealed container in a room specially designed for storing flammable materials at a temperature of 0 to plus 30 oC.

The guaranteed shelf life:
Sealing paste "K" is one year from the date of manufacture.
Catalyst No. 18 in the manufacturer's container is two years from the date of manufacture.
Sublayer P-11 is one year from the date of manufacture.



Name of materialK-18
Appearance of pastes viscous flowing material from white to dark gray, fallout of filler is allowed, distributed during mixing
Pot life, h, within 0.5-5.0
Conditional strength at the moment rupture, MPa, not less than 1.67
Relative elongation at rupture, %, not less than 80
Shore A hardness, conventional units, within 55-70
Specific volume electrical resistance at a temperature of (20±5) oC and relative air humidity of (65±5)%, ohm.cm, not less than 1kh1013
Specific surface electrical resistance at a temperature of (20±5) oC and relative air humidity of (65±5)%, ohm.cm, not less than 1kh1013
Dielectric loss tangent at a frequency of 106 Hz, no more than 0.020
Dielectric constant at a frequency of 106 Hz, no more than 3.5
Electric strength at temperature (20±5) oC and relative air humidity (65±5)%, ohm.cm, not less than 15

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