P r e
m i u m q u a l i t y s i n c
e 1867When it matters …
BF 750 – the solution not only for biogenic media
Certain already today. Certain also tomorrow.
Certain is: The future is variable. And therefore also the conditions. What applies today can already be quite di erent tomorrow. As the discussion about the development of new fuels showed: nothing is so uncertain as the future. But in order to still provide a n of certainty for you and your customers, it is important to u materials that also satisfy the high and changed demands of tomorrow.
That is why COG developed the new FPM/FKM material BF 750, which ful ls tomorrow‘s requirements already today. Design engineers and urs have extreme di culties in some cas with elastomer aling materials if the come into permanent contact with biogenic media. Biogenic media include, e.g. ethanol, e thanol-carburettor f uel m ixtures, r ape m ethyl e ster (RME, b iodiel), R ME d iel m ixtures, a nd p ure vegetable o ils. T his m aterial i s, o f c our, a lso r esistant t o a ll c onventional f u
els a nd m any o ther m edia . A truly universal, all-round aling material and available at reasonable terms.
• Universal all-rounder
• Excellent properties in u with biogenic
and conventional fuels
政工人员• Outstanding resistance to chemicals • Good solvent resistance • Very good steam resistance
• Low compression t
• High mechanical properties
• Broad operating temperature range
from -15 °C to +200 °C • Attractive price
Benefi ts of BF 750
Convincing values
Following storage for 72 h / 23 °C
Medium B100B5E85Vegetable
Oil Ethanol Fuel C Change in hardness Pt.00-10-1-1Change in tensile strength %000000Change in strain %000000Change in weight %0,00,0+0,30,0+0,2+0,1Change in volume
%
0,0
0,0
+0,7
0,0
+0,5
+0,1
Rubber technology values Property
蚕蛹的营养价值
Unit
Value
美食山Test method
Hardness Shore A 75 ± 5DIN 53 505°IRHD, CM 75 +3/-8ISO 48Tension value at 100MPa 10,8DIN 53 504Tensile strength MPa 22,6DIN 53 504Elongation at break %172DIN 53 504Tear strength
kN/m 12,3ISO 34-1,B Compression t (22 h / 200 °C)
%
< 20
DIN ISO 815
BF-750
COG-number BF 750
Ba elastomer uororubber (FPM/FKM)Colour
black
Operating temperature
from -15 °C to +200 °C苏珩
Following storage for 72 h / 70 °C
Medium B100B5E85Vegetable Oil Ethanol Fuel C Change in hardness Pt.-1-2-70-5-5Change in tensile strength %-11-10-20-5-19-17Change in strain %-6-8
-9
-3-10-9Change in weight %+0,5+0,4+3,1+0,1+2,2+1,9Change in volume
%
+0,8
+0,9+7,3
+0,1
+5,5
+5,3
The material BF 750 is a highly uoric polymer of the 3rd generation on the basis of fluororubber (FPM/FKM). This new material was developed by the COG mixture development department especially for the high requirements specified for O-ring als in u with biogenic media and was tested in an independent laboratory . The result exceeded all expectations becau practically no material changes occurred in normal u. The tests were therefore extended to include unusual extreme situations. And here too, the BF 750 material convinced everyone with results that lie far below every tolerance limit, as proved by the following data.
High expectations still exceeded.
Versatility as best basic requirement.
A versatile aling material is like a good insurance policy. This is becau many of the O-rings that are ud must, as a result of interactions, meet di erent requirements. The material BF 750 can be ud wherever the aling materials come into contact with the (new) biogenic media. The include
pipes, cables, valves, lling station fuel dispenrs and their peripheral equipment, pumps, motors, clutches, vacuum pumps, as well as facilities in the lacquer industry, oil industry (e.g. drill rod al), boilers, autoclaves, ho als, etc. The operational areas are extremely versatile.
Applications / operational areas
In addition to the biogenic fuels, this material is also highly suitable for u with conventional fuels (carburettor fuels, diel). Further operational areas are the chemical industry, mechanical engineering, and process engineering – in short, all operational areas in which high chemical resistance is required in addition to high thermal resistance.
The outstanding resistance to chemicals, steam, and solvents, combined with a low compression t and high mechanical properties make this aling material unique in the market gment for the operating temperature range from -15 °C to +200 °C. BF 750 – a universal material that truly derves the all-rounder title.
Properties of uororubber (FPM/FKM)
Outstanding resistance to mineral oils, aliphatic and aromatic hydrocarbons, as well as CHCs,
concentrated and diluted acids, also weak alkalis. Excellent temperature resistance up to 200 °C and high mechanical values, including
outstanding ageing resistance, rank this FPM/FKM-rubber much higher than the conventional synthetic rubbers.
The values stated here do not replace the o cial data sheet. They are not binding and exclude any form of liability for any kind of damage.
C. Otto Gehrckens GmbH & Co. KG
Seal Technology
••
Telefon +49 (0)4101 50 02-0 • Fax +49 (0)4101 50 de •***********
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FOR THE BENEFIT OF OUR CLIENTS C. Otto Gehrckens - abbreviated COG - has offered its client uncompromising premium quality for 140 years. Tradition and
innovation are a single potent entity at COG and the key to success.
This is demonstrated daily in our customer relations. Our clients
are the among the best in their respective industries. And they
expect the best from us.
Over 170 employees are committed at COG to our clients‘
success, ranging from engineers in the application
technology department to our colleagues in Europe‘s
largest O-ring warehou with their rapid respon capabilities.
As an independent manufacturer bad in Pinneberg near
Hamburg, managed by the fth generation of the founding
family, we are a leading supplier of precision O-rings thanks to
our compehensive stock, exible production facilities and customer
rvice commitment.
Our clients de ne the aims of everything we do. New ideas and products
are developed quickly and in a market- and goal-oriented manner in
clo cooperation with Application Technology and Sales. The result is
often a major market bene t to our clients. Plea refer de
or contact us directly for more information. Let‘s discuss your aims.
Gehrstücken 9 25421 Pinneberg Germany
+49 (0)4101 50 02-0 • +49 (0)4101 50 02-83
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