Interstate Plastics is proud to carry Delrin®, an industry-trusted name for acetal homopolymer. Delrin® is a tough, machinable thermoplastic with a high modulus of elasticity, high strength, good rigidity, dimensional stability, and resistances to moisture, chemicals and solvents. It has desirable toughness properties, performing well at extreme temperatures and under fatigue endurance. A low coefficient of friction (COF) alongside excellent wear properties, especially in wet or moist environments, makes it one of the most widely used engineering thermoplastics on the market today.
Low Moisture Absorption
Acetal plastics are ideal when working in wet environments as they absorb minimal amounts of moisture and, with a high level of heat resistance, can be heated or cooled without affecting form or dimensionality. Delrin® can be used in hot water applications up to 140°F without any hydrolysis effect. Unlike other materials that may erode form acidic water, hard water does not harm Delrin®.
High Strength & Stiffness
Delrin® is highly crystalline and due to its rigidity, resilience, toughness and strength, does not easily become brittle even with long-term exposure to unfavorable conditions including extremely high temperatures.
Easy to Machine
Delrin® is available in extruded rod and sheets for machined parts that are readily machined with standard machining practices. Any machining tool that is capable of high speed without vibration can be used.
Centerline porosity is an inherent characteristic specific to Delrin® and occurs due to gassing during manufacturing. Centerline porosity can be found at the center or surface of all homopolymer extrusions. The porosity can cause problems in machining or moisture permeation through materials. Centerline porosity can also affect Delrin® products because it compromises structural integrity, presents potential routes for leakage of gas and liquids, and provides areas where bacteria can grow in food processing applications.