Sterk® S850 ePTFE Gasket Sheet
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Sterk® S850 ePTFE Gasket Sheet
Description：
100% expanded PTFE (polytetrafluoroethylene), with multidirectional strength. It has the chemical resistance of conventional PTFE sheet gasketing without the creep and cold flow commonly associated with that material. Sterk S850 is stronger and more dimensionally stable than other ePTFE gaskets. It is highly conformable to rough or irregular sealing surfaces and compresses into an extremely tough gasket that creates a tight, long-lasting seal.
Benefits：
1. Superior resistance to creep and cold flow.
2. Exceptionally reliable sealing performance.
3. It resists all media (pH 0-14) except for molten/dissolved alkali metals and elemental fluorine.
4. Easy to cut.
Applications：
Sterk S850 is a tough, dimensionally stable and chemical-resistant gasket sheet for sealing steel pipe and equipment flanges in a wide range of applications and process conditions. It reliably seals flanges with rough surfaces and is ideal for flanges that require complex gasketing shapes or larger gasketing sizes.
Processes utilizing highly aggressive media, as in:
Chemical processing Pulp and paper manufacturing
Mining and minerals Semiconductor manufacturing Power generation
Large, complex or non-standard steel equipment flanges in:
Columns Reactors Turbines Heat Exchangers Tanks Pipe flanges
Technical advantages：
Chemical resistance to all media pH 0-14, except molten alkali metals and elemental fluorine.
Technical Data：
Model
Item
Sterk® S850
Temperature ℃
Maximum use: 315℃
Continuous temperature -240℃- +260℃
Maximum pressure MPa
3
Color
White
Red anti-counterfeiting printing
Density g/cm3
0.85
Compressibility %
46
Recovery %
11
Shore hardness
75
Tensile strength MPa
17
Longitudinal tensile strength MPa
27
Specific leak rate ≤1.0*10-3 cm3/s
0.7
Product specifications：
Thickness
mm
Width
mm
Length
mm
0.5
1500
1500
1
1.5
2
3
4
5
6
Note: Other thicknesses can be customized, and the maximum length of the sheet can be 4500mm.
- Storage period：
Expanded PTFE is not subject to aging and can be stored indefinitely.
TEST and certification：
RoHS 2.0
FDA 21 CFR 177.1550
If you need a test report, please contact us.
Sterk® S850 ePTFE Equivalent products
GORE® GR/ produra
KWO® ePTFE
Valqua® 7GP61/7GP66
Tombo® 9096/9096-SGM
Victor Reinz® REINZOFLON E
Garlock® GYLON® 3545/3540
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