Silikonovyiy or that we purchase an educational program

- But to what it is all?, - you ask. We answer: The matter is that the question recently is even more often heard:
- Why sanitary silikonovyiy hermetic in a bathroom (a toilet, a bath etc.) suddenly darkens (blackens)? Why sanitary silikonovyiy hermetic has suddenly fallen off?
- After all I like purchased sanitary silicone. Yes here on packing it is written. That has passed all half a year: etc.

Variants of such complaints set and on open spaces of a world wide web of the Internet not to consider similar questions and answer-back recommendations - say purchase from us, at us precisely sanitary, but on money as much or even more cheaply.

Give the same we all the same we will understand, THAT we purchase for 60 roubles.

First:
Of what consists silikonovyiy hermetic?

• silikonovyiy rubber,
• napolnitel (pigment),
• tiksotropiruschiy (cleaning fluctuation) the agent,
• plastifitsiruyuschie (increasing plasticity and elasticity) additives,
• fungitsidnyie (protivogribkovyie) additives
• The catalyst (the polymerisation activator).

The parity of those components as transfer should be about the following: 45 %, 45 %, 4 %, 4 %, 1 %, 1 %.

Secondly:
How many there is that parity of raw components?

• The price silikonovogo rubber makes nearby 4,15-4,20$ (110-120 roubles and it if to take abroad our native land and the cheapest).
• Waterproof (not absorbing a moisture, and it it is impossible to apply other) a pigment, such for example, as oksid the titan - 1,90-2,00$ (50-60 roubles).
• Tiksotropiruyuschiy the agent (aeroforces) costs an order 5.6$ (150 roubles).
• Softener (it is applied as a rule PMS or polimetilsiloksan - in prostoreche silikonovoe oil) - nearby 5.6$ (150 roubles),
• Fungitsid in account we will not take are copecks.
• The catalyst costs an order 12$ (300 roubles).

Total, by the simple mathematics we receive 87 roubles - cost only material compoundings. And it on the floor prices of raw materials.

Further we take minimum extra charge on material processing (a labour, an equipment handling, etc.) - 20 % and packing cost is nearby 0,35$ (10 roubles) for piece

Thus, we receive, that in a warehouse of manufacturer the material cost price is received a minimum 44 roubles for packing 300ml. Now add on here delivery to border and customs payments, and it about 30 % leaves, and we will receive - 57 rub for a cartouche.

It not a joke, and the real COST PRICE of hermetic without extra charge of factory of the manufacturer, the importer and the seller in Russia. And how you think, how many still % it is necessary to add to the price? I will answer you - a minimum 60. Thus, the hermetic price in a cartouche should make the MINIMUM 92 roubles for packing.

Somewhere in the markets or in shops under such price sell?

I use all aforesaid simply to consider - that we purchase under the price in 60 roubles, under the raw cost price 25 roubles are equal. It is thought, that comments izlishni, and we go further.

Thirdly:
Why hermetic blackens?

Here we also have approached to the most important thing.

Cheap silikonovyie hermetics are produced not on the compounding resulted above (as-should-be to supply normal operation), and under its "budgetary" version, silikonovyiy the rubber allows to "drive" the blessing dry napolnitelya (or a pigment) to 300 %. The rubber contents reduce somewhere to 25 %. Instead of waterproof napolnitelya the usual napolnitel-pigment not having effect of water pushing away which costs twice less is used. Instead of softeners on silikonovoy (related) basis mineral oils (petrochemistry products) in the increased parity are used.

Well here, to you hermetic also is ready. Cheap, already horror - sell I do not want.

Naturally fungitsidyi at it are present, and it really is sanitary, BUT, only before contact to water. As soon as there is an interaction of hermetic to water, it starts to absorb a moisture napolnitelem.

From absorption (vpityivaniya) a moisture there is an increase in the size of microparticles napolnitelya which, extending, in turn, expels outside softener. It is necessary to notice, that fungitsidyi are pushed out together with this softener since it initially is most easier to be dissolved in it. The softener expelled thus with fungitsidami is safely washed off by soap water in a shower or in a bathroom, and in 2-3 months (at someone in half a year) starts to grow. I think all have guessed, that starts to grow on a hermetic surface further.

Let’s sum up

• silikonovyiy rubber not less than 45 %
• Waterproof napolnitel-pigment not less than 45 %
• Related softener, tiksotropiruyuschiy the agent, fungitsidyi, the catalyst.

2) Qualitative silikonovyiy hermetic cannot cost more cheaply 90 roubles for packing in 300ml.

3) If hermetic costs less than 90 roubles, it is possible to apply it only in places with time leakings, or the limited period of humidity. Long contact of such "sanitary" hermetic to water is inadmissible.

4) Avoid to purchase sanitary hermetics of unknown brands. It is better to address to the qualified supplier, or the distributor of a firm of repute behind consultation. For demand while at us, as they say, yet do not pay.