0.8 mm Dyneema with Black Polyester Cover

Made primarily for repairing (pleated) insect screens: thin enough to run through existing guides, strong enough to last for years again.

Manufacturers of this type of cord often state a breaking strength of 25 kg. We tested 0.8 mm Dyneema with polyester sheath on our tensile tester (ISO 2307:2019, 5 pulls). Average breaking strength: 0.51 kN ≈ 52 kg — more than double the factory figure. Read the full test: 0.8 mm Dyneema with polyester sheath — breaking strength test.

The core is pre-stretched Dyneema (HMPE): stronger than steel on a weight-for-weight basis, does not absorb water and keeps its strength when wet. Over the core sits a black, 32-plait polyester sheath. It protects against abrasion and UV, gives more grip than slick bare Dyneema, and makes the cord slightly stiffer — useful when pulling it back through a screen.

Why this cord works for insect screens

-0.8 mm diameter: fits most pleated and insect-screen mechanisms

-High breaking strength for such a fine line (≈ 52 kg measured)

-Abrasion-resistant sheath: better suited to repeated travel in guides

-Easier to handle than unsleeved Dyneema

-For indoor use: also UV-resistant outdoors

Also suitable for indoor blinds, kite and model work, or other light precision jobs — but the main use is repairing and renewing insect-screen cords.

Delivery
By the metre (always in one continuous length) or 1,000 m reel. From stock; ordered before 13:00 = dispatched the same day.