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YL#200 combines the excellent sealing properties
of graphite with the benefits of a conventional aramid based
Gaskets sheet. Thanks to this unique combination of materials
YL#200 demonstrates first-rate thermal and mechanical properties
and an extremely extensive chemical resistance. The properties
ensure that YL#200 can be deployed in a very wide range of applications.
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| Maximum
short-term service temperature |
450 ℃ |
| Maximum continuous service
temperature |
300 ℃ |
| Maximum
operating temperature for steam |
280 ℃ |
Maximum temperature are related
to the material thickness, the thinner the material the
better the pressure/temperature ratio.
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Due to its high graphite content, YL#200 achieves
excellent thermal values and the material has very good adaptability
for coping with unevenness in flange surfaces. The combination
of aramid fibres and physiologically neutral binding agents
ensures the mechanical strength of the material. This makes
the sheet flexible and very easy to handle. The use of graphite
as the main component means the YL#200 has good sealing characteristics,
even with low surface stresses. The material also has excellent
recovery (elastic) properties, which allows it to cope well
with the thermal expansion in installations. The material has
a non-stick coating, which prevents it from sticking to the
flange surfaces. |
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In practice steam can cause leakage in conventional
Gaskets based on aramid or glass. The Gaskets materials are hardened
by this medium, which results in the seal losing its elasticity.
The seal then no longer has the property required for coping
with bolt tension loss caused by thermal expansions or contractions
in the installation, which results in leakage. Thanks to its
high percentage of graphite, YL#200 continues to perform exceptionally
well even when used in steam. Graph 2 illustrates the field
of application of YL#200 in combination with the saturated steam
curve. |
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Suitable for all types of flanges in industrial
installations, air compressors, screw joints with very small
ring dimensions such as radiators and gas and hot water installations,
pumps, appliances, flanges, gear cases and many other applications.
Graph 1 illustrates the range of various Gaskets materials:
this demonstrates that YL#200 overlaps a large range of the
applications of the other qualities. YL#200 therefore offers
you the opportunity to reduce the diversity in Gaskets materials,
thus reducing the risk of assembly faults.
In connection with the universal character of the material,
YL#200 has excellent resistance to oils, solvents, fuels, refrigerants,
(freons), salt solutions, gases,. and is suitable for drinking
water installations, steam installations and many other media.
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Due to it's material composition YL#200 has a
high level of workability. The material lends itsself particularly
well to cutting Gaskets on site using a simple hand tool. The
material can be supplied in sheets measuring up to 2000mm square,
which means that it is also ideal for the manufacture of Gaskets
for large applications. |
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| One side |
black,
with white imprint |
| Other side |
light grey (graphite) |
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| Thickness,
mm |
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1.5 |
| Density, g/㎤ |
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1.65 |
| Tensile
strength, MPa |
ASTM F152 |
13 |
| Compressibility, % |
ASTM F36 |
11 |
| Recovery, % |
ASTM F36 |
>55 |
| Residual stress, MPa |
BS 7531 |
26 |
| Gas leakage, cc/min |
BS 7531 |
<1.0 |
| Thickness increase, % |
ASTM Oil No 1 |
1.0 |
| Thickness increase, % |
ASTM Oil No 3 |
2.5 |
| Thickness increase, % |
ASTM Fuel B |
2.5 |
| Surface stress minimum, N/㎟ |
|
17 |
| Surface stress minimum, N/㎟ |
|
45 |
| Surface stress minimum, N/㎟ |
|
100 |
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