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Dynamica SK78 12-Strand Dyneema Rope by Bridon Cookes NZ

Dynamica SK78 12-Strand Dyneema® Rope – Bridon Cookes NZ

The Dynamica SK78 12-Strand Fibre Rope is an ultra-high molecular weight polyethylene (UHMWPE) line manufactured from genuine Avient Dyneema® SK78 fibres. Distributed in New Zealand by Bridon Cookes NZ, this rope delivers unmatched strength, minimal stretch, and superior creep resistance for demanding marine, rigging, and industrial applications.

Technical Specifications

  • Construction: 12-strand braided, rotation-free, torque-neutral
  • Material: 100% Dyneema® SK78 with protective polyurethane coating
  • Buoyancy: Specific gravity 0.96–0.98 (floats in water)
  • Melting Point: 144°C – 152°C
  • Max Working Temperature: 60°C – 65°C
  • Elongation: Low stretch (~0.60% at 10% breaking load)
  • Creep Resistance: Up to 4× longer creep lifespan vs standard SK75 or generic HMPE
  • UV & Chemical Resistance: High UV stability, 0% water absorption, excellent chemical resistance

Diameter & Breaking Load (ISO 2307)

Diameter (mm) Min Breaking Load (kg) Weight (kg/100m)
4 mm 1,400 1.4
5 mm 3,000 2.3
6 mm 4,000 3.1
8 mm 7,700 5.3
10 mm 10,000 7.5
12 mm 17,800 11.5
14 mm 22,000 14.8
16 mm 26,100 17.5
18 mm 36,000 23.5
20 mm 41,000 27.2
22 mm 50,500 34.0
24 mm 55,000 38.5
26 mm 65,000 45.0
28 mm 70,000 50.5
32 mm 84,500 63.0
36 mm 110,000 83.5

Custom solutions available up to 200 mm diameter (2,500-tonne break strength) upon quote request from Cookes.

Usage & Splicing

Standard knots will drastically reduce strength or slip under tension. Use eye splices or lock-stitch terminations for full load capacity. Avoid running bare SK78 over sharp or abrasive surfaces. Cookes provides certified testing and splicing services at their NZ branches.

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