DELRIN® Acetal Washers

Delrin® Acetal HomopolymerDELRIN® is a crystalline plastic which offers an excellent balance of properties that bridge the gap between metals and plastics. DELRIN® possesses high tensile strength, creep resistance and toughness. It also exhibits low moisture absorption. It is chemically resistant to hydrocarbons, solvents and pH neutral chemicals. These properties along with its fatigue endurance make DELRIN® ideal for many industrial applications.

  • Good dimensional stability
  • Low moisture absorption
    DELRIN® can operate in wet environments with little effect on performance or dimensions.
  • Excellent machinability
  • High fatigue endurance
  • High strength and stiffness properties
  • Superior impact and creep resistance
  • Chemical resistance to fuels and solvents
  • Natural grade may be requested from resin that is FDA, NSF and USDA compliant. Standard stamped parts are NOT FDA without request
  • Good wear and abrasion properties
    With its low coefficient of friction and hard and resilient surface, DELRIN® is the material of choice in
    many wear applications.

Ensinger’s Delrin® 150 stock shapes are a homopolymer acetal manufactured using DuPont Delrin 150 Resin. It is a crystalline plastic which offers an excellent balance of properties to bridge the gap between metals and plastics. It possesses high tensile and flexural properties, along with creep resistance and toughness, while exhibiting low moisture absorption, and fatigue endurance.

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Properties Condition Value Test Method Comment
Mechanical Modulus of elasticity (tensile test) 450,000 psi ASTM D 638
Tensile strength at yield 11,000 psi ASTM D 638
Elongation at break @ 73°F 25 % ASTM D 638
Flexural Strength @ 73°F 11,500 psi ASTM D 790
Modulus of elasticity (flexural test) @ 73°F 420,000 psi ASTM D 790
Compression strength 5,200 psi ASTM D 695 1) 1) 1% strain, injection molded
Impact strength (Izod) @ 73°F 1.5 ft-lbs/in
Rockwell hardness @ 73°F M Scale (R Scale) 94 (120) ASTM D 785
Coefficient of friction Dynamic, 40 psi, 50 fpm .2 ASTM D 3702
Wear rate 40 psi, 50 fpm 55*10-10 in3-min/ft-lbs-hr ASTM D 3702
Thermal Melting temperature 347 °F ASTM D 2133 1) 1) Injection molded sample
Deflection temperature @ 66 psi 336 °F ASTM D 648
Deflection temperature @ 264 psi 257 °F ASTM D 648
Service temperature Intermittent 300 °F
Service temperature Long term 185 °F – 2) 2) per UL746B
Thermal expansion (CLTE) 6.8*10-5 in/in/°F ASTM D 696
Specific hear 0.35 BTU/lb-°F

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