Polypropylene (PP) Washers

Tecafine PP PolypropeleneTECAFINE™polypropylene (PP) is homopolymer polypropylene plastic providing excellent chemical resistance to acids and bases. It is light weight and unaffected by moisture. This material is widely used in general purpose stamped parts and washer applications. It survives hot sulfuric acid in lead acid batteries in your car, acid resistant filter plates in the pulp and paper industry, and heat ages well enough to survive under the hood operating temperatures.

  • Excellent chemical resistance
    TECAFINE™PP is resistant to organic chemicals, solvents, mineral acids, and inorganic salts.
  • Weldable
  • High purity
    TECAFINE™PP nonparticulating and suitable for high purity environments.
  • Light weight
    TECAFINE™PP has a specific gravity of less than 1.
  • Moisture resistant
    TECAFINE™PP is unaffected by water or moist environments.
  • Unsurpassed quality
    Ensinger’s unequaled extrusion expertise means users consistently obtain the highest quality polypropylene stock shapes.

TECAFINE™PP’s excellent chemical resistance and high purity characteristics make it ideal for use in the food-processing and chemical-processing industries. Common applications include pump and valve components, tanks, laboratory equipment, and other parts in contact with corrosive environments.

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Properties Condition Value Test Method Comment
Mechanical Modulus of elasticity (tensile test) @ 73°F 130,000 psi ASTM D 638
Tensile strength at break @ 73°F 4,700 psi ASTM D 638
Elongation at break @ 73°F 100 % ASTM D 638
Flexural strength @ 73°F 6,000-8,000 psi ASTM D 790
Modulus of elasticity (flexural test) @ 73°F 180,000 psi ASTM D 790
Notched impact strength (Izod) @ 73°F 0.9 ft-lbs/in ASTM D 256
Rockwell hardness R Scale 90 ASTM D 785
Thermal Melting temperature 330 °F 1) 1) Per ASTM D3418
Deflection temperature @ 264 psi 130 °F ASTM D 648
Thermal expansion (CLTE) 5*10-5 in/in/°F ASTM D 696
Electrical Volume resistivity @ 73°F 1*1017 Ω*cm ASTM D 257
Dielectric constant @ 60 Hz, 73°F, 50% RH 2.2 ASTM D 150
Other Moisture absorption @ 24 hours, 73°F 0.01-0.03 % ASTM D 570
Flammability (UL94) HB
This information is only to assist and advise you on current technical knowledge and is given without obligation or liability. All trade and patent rights should be observed. All rights reserved. Data obtained from extruded shapes material.
TECAFINE™ PP – Ensinger Industries, Inc.

Mechanical

Property: Modulus of elasticity (tensile test)
Condition: @ 73°F
Value: 130,000 psi
Test Method: ASTM D 638
Comment:

Property: Tensile strength at break
Condition: @ 73°F
Value: 4,700 psi
Test Method: ASTM D 638
Comment:

Property: Elongation at break
Condition: @ 73°F
Value: 100 %
Test Method: ASTM D 638
Comment:

Property: Flexural strength
Condition: @ 73°F
Value: 6,000-8,000 psi
Test Method: ASTM D 790
Comment:

Property: Modulus of elasticity (flexural test)
Condition: @ 73°F
Value: 180,000 psi
Test Method: ASTM D 790
Comment:

Property: Notched impact strength (Izod)
Condition: @ 73°F
Value: 0.9 ft-lbs/in
Test Method: ASTM D 256
Comment:

Property: Rockwell hardness
Condition: R Scale
Value: 90 –
Test Method: ASTM D 785
Comment:

Thermal

Property: Melting temperature
Condition:
Value: 330 °F
Test Method: 1)
Comment: 1) Per ASTM D3418

Property: Deflection temperature
Condition: @ 264 psi
Value: 130 °F
Test Method: ASTM D 648
Comment:

Property: Thermal expansion (CLTE)
Condition:
Value: 5*10-5 in/in/°F
Test Method: ASTM D 696
Comment:

Electrical

Property: Volume resistivity
Condition: @ 73°F
Value: 1*1017 Ω*cm
Test Method: ASTM D 257
Comment:

Property: Dielectric constant
Condition: @ 60 Hz, 73°F, 50% RH
Value: 2.2 –
Test Method: ASTM D 150
Comment:

Other

Property: Moisture absorption
Condition: @ 24 hours, 73°F
Value: 0.01-0.03 %
Test Method: ASTM D 570
Comment:

Property: Flammability (UL94)
Condition:
Value: HB –
Test Method:
Comment:

This information is only to assist and advise you on current technical knowledge and is given without obligation or liability. All trade and patent rights should be observed. All rights reserved. Data obtained from extruded shapes material.
TECAFINE™ PP – Ensinger Industries, Inc.

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