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Arclin Kevlar aramid fiber used in DEFF DURO cases

Arclin™ Kevlar® Fiber

Arclin™ Kevlar® Fiber is a para-aramid synthetic fiber originally developed by DuPont in the USA and, since 2026, produced by Arclin, which acquired DuPont’s aramids business. It’s renowned for its exceptional tensile strength (about 5 times STRONGER than Steel), lightweight nature, high heat resistance, cut resistance, and resistance to chemical corrosion. 

Since its commercialization in 1972, Kevlar® has been widely used in personal protective equipment (such as Bulletproof Vests and Cut-resistant Gloves), Aerospace, Automotive Industries, Sports Equipment, Fiber Optic Protection Layers, and Construction Reinforcement. It is recognized as a high-performance, lightweight composite material.

Why We Choose

Arclin™ Kevlar® Fiber

Ultra-light strength of Kevlar aramid fiber

Ultra-light Strength

5 times STRONGER than steel at equal weight, Kevlar® enables us to build Ultra Slim Cases without sacrificing protection.

Rigid yet tough Kevlar fiber absorbs impact

Rigidity & Toughness

Rigid yet not brittle, Kevlar® absorbs and disperses impact energy, offering reliable drop protection.

Non-conductive Kevlar does not block wireless signals

Stability & Safety

Non-conductive and does not interfere with wireless signals (Wi-Fi, Bluetooth, GPS), making it ideal for electronic accessories.

Kevlar fiber thermal stability

Thermal Stability

Kevlar® resists softening and maintains integrity at high temperatures (typically decomposing only above 400°C), ensuring durability in production and long-term use.