Multi-Material Plastic Hardware Solutions for Industrial & Medical Applications

At Craftech, we bring decades of experience to every plastic hardware solution, tailoring each part to the exact demands of your application. Craftech offers a portfolio of more than 100 high‑performance plastic materials—and we also incorporate metal, wood, and ceramics when the design requires it. Through years of engineering and testing, we’ve discovered that many of our best‑performing products combine two or more materials in a single part, delivering superior durability and functionality.

Our multi‑material solutions are especially prevalent in the tube and hose fittings and accessories that power fluid and gas delivery systems across the industrial and medical sectors. Fasteners such as check valves, threaded check valves, duck‑bill check valves, reducing and enlarging check valves each specify two distinct materials: one for the diaphragm and one for the body. The diaphragm’s material is chosen to match the chemistry of the transported fluid or gas, while the body material is selected for environmental resilience, visual clarity (when using polycarbonate), or aesthetic considerations. Using a dual‑material construction ensures the component performs reliably under all operating conditions.

The chart below highlights the performance of three of our most popular diaphragm materials. Each material offers unique strengths and trade‑offs.

Legend: E = Excellent | G = Good | F = Fair | P = Poor | NR = Not Rated

In‑line filters are another prime example of Craftech’s multi‑material expertise. These fittings are engineered for removing visible particulates from both aqueous solutions and gas streams. Depending on the application, the filter media can be stainless steel—ideal for larger particles—or high‑density polyethylene (HDPE) that incorporates micro‑pore technology to trap virtually every fine particle.

Filter housings are manufactured from nylon, polypropylene, or polycarbonate, selected based on the surrounding environment and system requirements.

These examples only scratch the surface of our multi‑material capabilities. We’re continually innovating to bring you higher quality, more reliable plastic hardware. What material combinations have you found most effective? Share your insights in the comments below.

Explore the plastic hardware discussed here and our full range of fasteners and components.