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Rulon Bearings

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GEHR Plastics PVDF-ELS Polyvinylidene Fluoride, Electrically Conductive
Categories: Polymer; Thermoplastic; Fluoropolymer; Polyvinylidene Fluoride (PVDF)

Material Notes: Polyvinylidene fluoride shows a higher tensile strength, pressure resistance and dimensional stability than the related PTFE, but friction and insulation properties are lower. PVDF has a high mechanical strength and toughness at lower temperature and it's self-extinguishing. The temperature ranges from -30°C to 150°C.

Properties

  • high tensile strength
  • high mechanical strength
  • high rigidity
  • high chemical resistance
  • very low water absorption
  • good friction and wear and tear values
  • self-extinguishing
  • high UV-resistance
  • toxic fumes when burned
  • can not be solvent cemented
  • relatively high coefficient of thermal expansion
Applications include gaskets, pumps, rotation disks, valves, flap traps, centrifugals of extraction, fittings, glide tracks, and cogwheels.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.78 g/ccISO 1183
Moisture Absorption at Equilibrium 0.040 %ISO 62
Water Absorption at Saturation 0.10 %ISO 62
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 76ISO 868
Tensile Strength, Yield 40.0 MPaISO 527
Elongation at Break >= 20 %ISO 527
Elongation at Yield 9.0 %ISO 527
Modulus of Elasticity 1.60 GPaISO 527
Charpy Impact, Notched 8.00 kJ/m²ISO 179
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity <= 10000 ohm-cmIEC 60093
Surface Resistance <= 10000 ohm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 130 µm/m-°CISO 11359
Maximum Service Temperature, Air 150 °CUL 746B
Minimum Service Temperature, Air -30.0 °CUL 746B
 
Compliance PropertiesOriginal ValueComments
FDA NoPhysiological indifference
 
Descriptive Properties
Acid Resistancelimited
Bondabilitylimited
Colorblack
Physiological indifferenceno, EEC
UV Stabilizationyes

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