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Polyester rope

(8 products)

Here you will find the extensive prorope range of polyester cord and rope, suitable for various applications. This range varies from the widely used and popular blind cord, ideal for smaller jobs, to sturdy 12 mm braided polyester rope, available in classic black or white.

The polyester cord and rope is designed for ease of use and comes on a practical 100-meter reel, giving you enough length for larger projects. For those who prefer flexible purchasing, the thicker diameters can also be ordered by the meter, so you get exactly the amount you need, without waste.

Polyester rope is known for its excellent properties, making it a reliable choice for both indoor and outdoor use. It is completely weather-resistant, which means it can withstand rain, wind, and other weather conditions without compromising on quality. In addition, it has little stretch, allowing it to retain its shape and tension even under pressure. The rope does not discolor quickly under the influence of sunlight, thanks to its excellent resistance to UV light, ensuring a long-lasting attractive appearance. Finally, polyester rope is exceptionally strong, making it suitable for heavy loads and intensive use. In short, a versatile and durable product that meets all your requirements!

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UV resistance Best in classMost UV-resistant synthetic fiber. Fades hardly at all, even after years in the sun. Black lasts even longer.
Elongation at break 10–15%Maintains its tension and shape well under working load. Ideal for tight lines such as flag and sheet lines.
Strength (wet) 100%Loses no strength when wet — unlike nylon. Completely rot-proof and mildew-resistant.
Abrasion resistance ExcellentVery abrasion resistant; dry polyester even outperforms wet nylon. Lasts a long time over blocks and cleats.
Buoyancy SinksSpecific gravity 1.38 g/cm³. Water absorption < 0.5% — absorbs virtually no moisture.

Our own tensile test data

Polyester rope truly tested

We test rope on our own tensile tester according to ISO 2307 — five times to break, without knot. That way we know the actual breaking strength, not just the factory specification.

01 Construction determines strength — not diameter

The same material and diameter can differ greatly. We tested four 8 mm polyester ropes: a spun sheet line cover without core reached only 328 kg, while a core-cover with twisted core came out at 1,037 kg.

8 mm: 328 kg (without core) → 1,037 kg (core-cover with twisted core) — factor 3.2
02 A knot costs you 43–45% breaking strength

A knot concentrates tension at one point, causing the fibers to fail there sooner. A splice, on the other hand, costs only about 10% strength.

8 mm sheet line: 770 kg → 441 kg with knot (≈ −43%)
6 mm sheet line: 548 kg → 302 kg (≈ −45%)
03 A second knot adds almost nothing

The rope breaks at the first knot anyway. A second knot in the same line hardly changes the breaking strength.

8 mm: 441 kg (1 knot) vs 435 kg (2 knots)
04 Tapping sound just before breaking

Our braided sheet lines gave a tapping sound before the final break — as if you were plucking strings. Loose fibers snapped well before the complete break, at a higher force. Unlike twisted rope, that first snapping is therefore not a sign that the maximum has been reached.

10 mm: loose fibers snap around 10.9 and 11.1 kN — complete break later, higher
05 A splice costs only about 10%

Where a knot costs almost half the strength, a splice retains most of it. Our advice: use a splice instead of a knot where strength matters.

Splice ≈ −10% · knot ≈ −43–45%

Comparison

Polyester rope vs nylon vs polypropylene

Property Polyester Nylon Polypropylene
StretchAverage (10–15%)High (15–25%)Average (12–15%)
UV resistance★★★★★★★★☆☆★★★★☆
Strength (wet)100%85%100%
BuoyancySinksSinksFloats
Abrasion resistance★★★★★★★★★☆★★★☆☆
Melting point± 250 °C± 269 °C± 171 °C
Price€€€€€€
Best forSailing, mooring lines, outdoor useAnchor lines, shock absorptionFloating lines, water skiing

Conclusion: Choose polyester rope when you need maximum UV resistance and high abrasion resistance. Choose nylon for shock absorption (anchor lines) and polypropylene if the rope must float.

Applications

Where polyester makes the difference

Sailing & watersports
Sailing & watersportsLow stretch — standard material for running rigging
  • Sheets and halyards
  • Mooring lines
  • Flag and guy lines
Shipping & maritime
Shipping & maritimeRot-proof and resistant to salt water, even permanently outdoors
  • Sheet lines
  • Mooring lines and dock lines with spliced eye
  • Twisted rope for splicing
Interior & window decoration
Interior & window decorationThin, smooth blind cord for indoor applications
  • Blinds, pleated and folding curtains
  • Decorative cord and repairs
Industry & marking
Industry & markingTaut, abrasion resistant and colorfast
  • Barrier and marker cord
  • Fastening and tension lines

Technical information

Specifications, points of attention & available diameters

Technical specifications

MaterialPolyester (PET — polyethylene terephthalate)
Specific gravity1.38 g/cm³ — sinks
Elongation at breakapprox. 10–15 %
Melting pointapprox. 250 °C (literature 246 °C)
Working temperature−40 °C to +100 °C
Water absorption< 0.5% (virtually zero)
UV resistanceBest of all synthetic fibers
Abrasion resistanceExcellent (dry better than wet nylon)
Strength loss splice / knot± 10% (splice) · 43–45% (knot, own test)

Points of attention when using

  • 1 Knot vs splice: a knot costs 43–45% breaking strength — choose a splice for the finish where strength matters.
  • 2 Load-bearing core: for core-cover and sheet line rope, the load-bearing core determines most of the strength.
  • 3 Friction heat: polyester melts from friction heat. When running quickly through a cleat or block, local heat can occur.
  • 4 Storage: store rope dry and preferably out of direct sunlight for the longest lifespan.

Available diameters

0.8 mm 1.3 mm 1.7 mm 2 mm 2.5 mm 3 mm 4 mm 5 mm 6 mm 8 mm 10 mm 12 mm 14 mm 16 mm

Available per meter. 0.8–2.5 mm as blind cord; up to 16 mm as sheet line and mooring line.

Buy polyester rope at Prorope

Directly from our own stock, by the meter

Prorope supplies polyester rope directly from our own stock. Almost all ropes are available by the meter — order exactly what you need.

Ordered before 1:00 PM = shipped the same day
Available by the meter — no minimum order
Available in white, black and various colors
Own splicing service — eyes, loops and mooring lines custom made
Tested in our own tensile tester — honest breaking strengths, no marketing figures
Order polyester rope

We supply to consumers, water sports enthusiasts, shipping and industry.

Need advice or a quote?

Our rope specialists are happy to help you with the right diameter, variant or finish.
+31-77 208 6139 · info@prorope.com

Frequently asked questions

Polyester rope FAQ

Polyester rope is made from synthetic polyester fiber (polyethylene terephthalate or PET). It is one of the most commonly used rope materials due to the excellent balance between strength, UV resistance, low stretch and affordability.
Polyester has less stretch than nylon and is more UV resistant; moreover, it retains 100% of its strength when wet. Nylon stretches more and therefore absorbs shocks better, but loses 10–20% strength when wet. Choose polyester for tight lines and outdoor use, nylon for anchor lines and shock absorption.
Yes, polyester is the most UV-resistant synthetic fiber, rot-proof and absorbs virtually no moisture. The rope retains its color and strength even after years of exposure to weather and wind. Black polyester is also slightly more resistant to UV than white.
No, polyester sinks. With a specific gravity of 1.38 g/cm³ it is heavier than water. Need a floating rope? Then choose polypropylene rope.
Braided polyester rope has a smooth, round structure and is supple and kink-free. Twisted polyester consists of three twisted strands, is more traditional and easy to splice. Braided is ideal for general use; twisted is suitable for heavier maritime applications.
Yes, polyester is extremely resistant to salt water and is not affected by salt. It is also resistant to most acids, alkalis, oil and gasoline. That is why it is popular for mooring lines, sheet lines and other maritime applications.
In our own tensile tests, polyester sheet line lost 43–45% of its breaking strength with a knot: an 8 mm sheet line went from 770 kg (without knot) to 441 kg (with knot). A second knot added almost nothing, because the rope breaks at the first one anyway. A splice, on the other hand, costs only about 10%. So use a splice where strength matters.
Because construction is more important than diameter. We measured values for four different 8 mm polyester ropes ranging from 328 kg (spun cover without load-bearing core) to 1,037 kg (core-cover with twisted core) — a factor 3.2 difference. The load-bearing core is decisive; so never look at diameter alone.
A tapping, plucking sound — as if you are pulling strings. In our braided sheet lines, loose fibers were already snapping (for example around 10.9 and 11.1 kN for 10 mm) while the rope only fully broke at a higher force. Unlike twisted rope, that first snapping does not mean the maximum has been reached.
For maximum strength we recommend a splice instead of a knot: a splice costs about 10% breaking strength, a knot 43–45%. For loose ends, briefly melt the rope or whip it, so it does not fray. With core-cover rope it is important that the core is also neatly finished.
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