INNOVATIVE PIPE GASKET
FOR HIGH PURITY PIPING SYSTEMS
SEAL CLEAN
GORETM GASKET STYLE 801
Key Properties
• Made from 100 % virgin PTFE
• PTFE with a multidirectionally
orientated fibrous structure
• Seals even at low bolt torques
• Very low diffusion values
• High dimensional stability and
creep resistance
• High resistance against chemicals
and high temperatures
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• High blowout resistance
Your Benefits
THE BEST SOLUTION
Technical Data
No PTFE gaskets especially designed for plastic
flanges were available until now.
Conventional PTFE gaskets demonstrated
elevated creep which, causes due to temperature
changes or service time, eventually leakage.
The inside diameter of the gaskets did not
correspond to those of the plastic flange and
generates a gap on the inside surface of a flange
connection.
Seal Clean is made from 100 % expanded PTFE
(ePTFE) with a multi-directionally orientated
fibrous sturcture and a skin from very thin, highly
densified ePTFE as a diffusion layer.
Another benefit is that no fillers, elastomer particles
etc. can reach the product flow and contaminate
the operating medium.
For these reasons, AGRU and GORE developed
an expanded PTFE gasket which is ideal for
sealing of plastic flanges.
This new and innovative Seal Clean gasket
combines the exeptional chemical resistance of
pure PTFE with the excellent mechanical
properties of expanded PTFE to provide very low
leakage rates. Due to its unique design, the seal
exhibits outstanding creep resistance and uses
minimised surface pressure. The new construction
of the gasket, with a new innovative design
guarantee optimal functions, which have not been
seen on the market until now.
TM
Compared to other products, the Seal Clean
gasket shows significantly better leach out results,
which makes it the ideal solution for the
semiconductor- and pharma industries.
AGRU provides with the Seal Clean gasket a
complete plastic piping system to fulfil the high
requirements of the High Purity industry.
Chemical resistance
Being 100 % pure PTFE, the gasket material is
almost universally chemical resistant. The gasket
is resistant to all media in the range pH 0 – 14,
except molten alkali metals and element
fluorine, particularly at elevated temperatures
and pressures.
• Available for plastic flanges in DIN,
ANSI and JIS
• Gasket dimensions especially
designed for AGRU stub flanges
(minimised dead leg areas)
• Solves current problems of flange
gaskets
• Highly conformable
• Seals highly permeable and
aggressive fluids
• Seldom needs retorquing even with
temperature changes
• Superior sealing reliability and long
gasket life
• Cleaned and double bagged under
cleanroom conditions class 100
• TÜV approval for 16 bar pressure
resistance
Typical Applications
Stability
The product is not subject to ageing and can be
stored indefinitely.
Physiological safety
Physiologically harmless in prolonged
installation at temperatures up to +260 °C
according to VDI/VDE guidelines 2480.
• Piping Systems out of PE, PP, PVDF
and ECTFE for the use in high purity
systems and for the semiconductorand pharma industries.
• Process piping systems in PE, PP,
PVDF and ECTFE for the chemical
industries.
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Mechanical Properties
The surface pressure of the installation is
preferably maintained in operation, under pressure
and at temperature load. This is to avoid undue
leakage or, at worst, blowout of the seals.
The Seal Clean gasket exhibits outstanding
pressure and creep resistance combined with high
stability. That means that the sealant is nonsensitive to exterior forces, and thus achieves a
high residual stress compared to other PTFE and
elastomer gaskets.
Static leach out behavior
Static leach out tests deliver useful information about the purity of a gasket. These tests are valuable for
comparing different gaskets, but do not represent a real installation. When comparing leach out results
it is important to ensure that the test methods and the analysis equipment are identical. Different test
methods affect the results.
Test duration:
Test medium:
Test equipment:
Test unit:
Element
24 hours
5 % HNO3
ICP-MS
ng metal / gasket
Test
duration
[hours]
Leakage
A gasket in use should allow only low leakage rates
during the entire time of operation. Since plastic
flanges, compared with metal flanges, tolerate only
very low bolt torques, the gasket must provide a
reliable seal even at these low bolt forces. The
Seal Clean gaskets shows that leakage rates
according to DIN 28090 (40 bar inner pressure,
λmax = 0,01mg/(s*m)) can be reached even at
surface pressures of 6 MPa.
Available sizes for PVDF, PVDF-UHP, ECTFE,
PE and PP stub flanges
Test temperature 20°C
Seal Clean
EPDM/PTFE
EPDM/PTFE
ePTFE gasket
profile gasket
profile gasket
type 2
flat gasket
type 1
Ag
24
<5
<5
<5
Al
24
33
58
420
Ba
24
<5
18
107
Ca
24
78
86
1577
11
Cr
24
<5
19
Cu
24
<5
12
94
Fe
24
46
840
1992
198
K
24
6
<5
Li
24
<5
<5
<5
Mg
24
8
151
297
Mn
24
6
23
36
Mo
24
<5
<5
<5
Na
24
8
<5
272
Ni
24
<5
51
19
Pb
24
122
176
43
Sn
24
<5
<5
57
Sr
24
<5
<5
8
Ti
24
<5
13
7
Tl
24
<5
<5
<5
Zn
24
7
28
239
Zr
24
<5
<5
20
Gasket thickness 3 mm
OD
SDR
DIN
ANSI
JIS
20
11 / 21
√
√
√
25
11 / 21
√
√
√
32
11 / 21
√
√
√
40
11 / 21
√
√
√
50
11 / 21
√
√
√
63
11 / 21
√
√
√
75
11 / 21
√
√
√
90
11 / 21 / 33
√
√
√
110
11 / 21 / 33
√
√
√
125
11 / 21 / 33
√
√
√
140
11 / 21 / 33
√
-
√
160
11 / 21 / 33
√
√
√
180
11 / 21 / 33
√
-
-
200
11 / 21 / 33
√
√
√
225
11 / 21 / 33
√
√
√
250
11 / 21 / 33
√
√
√
280
11 / 21 / 33
√
-
√
315
11 / 33
√
√
√
Delivery
Gaskets are cleaned and will be double bagged delivered by order of full package units. Each gasket is
individually packed in a cleanroom in PE / nylon bags.
Package units:
≤ OD 110
> OD 110
10 pcs / package unit
5 pcs / package unit
Single orders of gaskets will be delivered single packed
AGRU Kunststofftechnik GmbH
A-4540 Bad Hall / Austria
Ing.-Pesendorfer-Strasse 31
Phone : + 4 3 7 2 5 8 7 9 0 - 0
Fax:+4372583863
e-mail:anwt@agru.at
internet: http://www.agru.at
OD ... outside diameter of the piping
o.r. ... on request
Subject to change
without prior notice!
Please refer to the current ESA guidelines for installation advice.