Isoplast® 40% Long Glass TPU – Ultra‑Durable Plastic for Hex Screws, Nuts, and Custom Fasteners
Isoplast® 40% Long Glass TPU is a high‑performance, injection‑molded thermoplastic polyurethane that delivers exceptional strength, durability, and chemical resistance. With a natural off‑white hue that is often dyed dark gray, this rigid TPU has become the material of choice for replacing steel in demanding applications across a range of industries.
Key Advantages
- UV & ozone resistant – maintains performance outdoors for years.
- Excellent tensile strength – up to 29,977 PSI (186 MPa).
- Broad chemical resistance – suitable for pH 2–14 environments.
- UL V‑0 flame rating – safe for fire‑hazardous settings.
- Abrasion and water resistance – ideal for marine and wet‑climate use.
- High flexibility and elongation at break – resists impact and fatigue.
- Non‑conductive – safe for electrical installations.
- Recyclable – supports sustainability goals.
- Load‑bearing capability – can replace steel in many fastener applications.
Limitations
- Not resistant to strong acids or bases.
- Swells when exposed to aromatic or aliphatic hydrocarbons.
Applications
Medical Equipment
Used in laboratory and pharmaceutical manufacturing, Isoplast® 40% Long Glass TPU provides water, ozone, and chemical resistance essential for clean‑room environments.
Bucket Trucks
Telecom, cable, and power companies rely on bucket trucks for installation and maintenance. The TPU’s strength, non‑conductivity, and weatherproof nature make it an ideal fastener material for these vehicles.
Cable Tray Systems
Cable trays in hospitals, schools, chemical plants, marinas, and more benefit from TPU’s superior chemical, flame, and UV resistance. Common parts include hex head cap screws, flanged hex nuts, hangers, and pipe clamps.
Grating
TPU grating is injection‑molded and excels in sewer treatment facilities and car washes, offering chemical resistance, high strength, and resistance to rust and abrasion.
Concealment Industry
For cell‑phone towers, broadcast antennas, and rooftop installations, TPU fasteners provide a high‑tensile, UV‑resistant, weather‑proof solution that enhances aesthetic concealment while maintaining structural integrity.
Aquapod™
Ocean Farm Technologies’ Aquapod™ – a fish‑farm containment system – was originally built with galvanized steel. After extensive testing, the company switched to Isoplast® 40% Long Glass TPU, eliminating corrosion and simplifying maintenance.

Isoplast® 40% Long Glass TPU offers a tensile strength of 29,977 PSI (186 MPa) and exceptional resistance to saltwater and UV exposure. Its low water absorption allows prolonged submersion without degradation.
Cost‑Effective Repairs
Steel fasteners in the original Aquapod design corroded over time, making panel removal difficult and costly. TPU fasteners resist rust and corrosion, allowing technicians to remove and replace parts with standard wrenches even after years underwater. This leads to quicker, cheaper repairs and extended equipment life.
Craftech now manufactures vinyl ester rods and a full line of TPU fasteners for the Aquapod™. The vinyl ester rod forms the pod’s frame, while Isoplast® 40% Long Glass TPU hardware secures the structure.
If you’re tackling a project where durability, corrosion resistance, and ease of maintenance are critical, consider Isoplast® 40% Long Glass TPU. Bring us your designs and challenges, and we’ll help you find the right solution.

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