Decades of Material Expertise

The pros at Ammex Plastics and Echo Supply have decades of experience and knowledge about all the most common raw materials. We’ll use that expertise to help guide your project and make sure you’re using the perfect material for your specific needs.

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Common Plastic Resins

Below is a quick reference for some of the most common plastic resin materials we work with:

  • Acrylonitrile Butadiene Styrene (ABS)

  • Acrylic (PMMA)

  • Low-Density Polyethylene (LDPE)

  • High-Density Polyethylene (HDPE)

  • Polyethylene (PE)

  • Polypropylene (PP)

  • Polyamides / Nylon (PA)

  • Acetal Homopolymer / Copolymer (POM)

  • Polycarbonate (PC)

  • Polyphthalamide (PPA)

  • Polybutylene Terephthalate (PBT)

  • Polyurethane (PU)

  • Thermoplastic Elastomers (TPE)

  • Thermoplastic Urethanes (TPU)

Learn More

Nylon (PA 6, PA 6/6)

Nylon, a synthetic thermoplastic, is a material we commonly use for fastening and connecting applications. Nylon’s downside is that it has a relatively low impact strength, which is why it’s vital to combine with other materials (such as glass fibers) to improve its strength. It’s also important to understand the complexities of material flow and injection point(s) with nylon.

Recommended Wall Thickness: 0.030″ – 0.115″

Common Applications
  • Barbed Fluid Routing Connectors
  • Brake Line Clips
  • HVAC Line Line Clips
  • Jounce Bumper Assemblies

Low-Density Polyethylene (LDPE)

Low-density polyethylene is a low-cost thermoplastic polymer material used in a variety of applications.  Echo Engineering specializes in catalog and custom LDPE products used mainly by automotive and fluid power manufacturers for shipping protection applications.

Recommended Wall Thickness: 0.030″ – 0.200″

Common Applications
  • A/C Line Shipping Caps
  • Hydraulic port plugs
  • Engine and Transmission inlet/outlet port plugs
  • General purpose shipping caps/plugs


Thermylene®is a specialty chemically coupled glass reinforced polypropylene (PP) which helps it resist distortion under load. Because of it’s glass-reinforced properties, material flow will be crucial towards molding a successful product.

  • Suspension Components
  • Superior knit line strength
  • Excellent chemical resistance
  • Enhanced tensile strength


TPU is a material commonly known as a bridge between rubbers and plastics.  Even though it is plastic, it can be extremely flexible and durable.  Because of this, TPU has a variety of different automotive applications.

  • Suspension Components
  • Driveshaft Boots
  • High tensile strength
  • Excellent wear, tear, and abrasion resistance
  • Increased resistance against oils, greases, oxygen, and ozone

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