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Rulon Bearings

Garlock GYLON® 3565 ENVELON® PTFE Gasketing, Glass Microsphere Filled
Categories: Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE); Polytetrafluoroethylene (PTFE), Glass Filled, Molded

Material Notes: PTFE with aluminosilicate microsphere filler.
  • Soft, deformable exterior conforms to surface irregularities; ideal for worn, warped or pitted flanges
  • Stable blue core improves cold flow resistance
  • Low bolt load requirements ensure a tight seal on glass-lined or wavy flanges
  • Direct sintering of GYLON® layers prevents leak paths and adhesive contamination
Media: Moderate concentrations of acids and caustics, hydrocarbons, solvents, cryogenics, and glass-lined equipment

Information provided by Garlock Rubber Technologies

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Physical PropertiesMetricEnglishComments
Permeability 0.0150.015Gas Permeability, cc/min; DIN 3535 Part 4
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength 12.4 MPa1800 psiacross grain; ASTM F152
 
Electrical PropertiesMetricEnglishComments
Dielectric Strength 11.9 kV/mm
@Temperature 121 °C,
Time 10800 sec
301 kV/in
@Temperature 250 °F,
Time 3.00 hour
0.0625 in. thickness; ASTM D149
 8.70 kV/mm
@Thickness 1.59 mm
221 kV/in
@Thickness 0.0625 in
100% RH for 96 hours; ASTM D149
 
Thermal PropertiesMetricEnglishComments
Maximum Service Temperature, Air 260 °C
@Pressure 8.27 MPa
500 °F
@Pressure 1200 psi
Continuous
Minimum Service Temperature, Air -268 °C-450 °F
 
Compliance PropertiesMetricEnglishComments
FDA YesYes
 
Descriptive Properties
Compressibility, %35-50ASTM F36
Creep Relaxation, %35ASTM F38
Sealability ASTM F37B, ml/hr0.33ASTM Fuel A

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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