GLEISTEIN Gemini X - 8mm / Breaking load 1400daN - white/green

Gemini X is a highly flexible polyester sheet designed for cruising yachts and sport cruisers with a focus on controlled handling, even load distribution, and long service life. The pure polyester double braid provides a balanced combination of strength, elongation, and flexibility while fully retaining the inherent properties of polyester.

The load-bearing polyester core absorbs working loads, while the cover made from the same material ensures abrasion resistance, shape stability, and consistent grip on winches and in clutches. The rope remains dimensionally stable, shows predictable elongation under varying loads, and supports comfort-oriented sailing through low handling forces combined with controlled guidance under load. Available by the meter, Gemini X can be cut to exact length and deliberately avoids high-performance fibers in favor of consistent characteristics over many seasons.

Key benefits at a glance

• very high flexibility for comfortable handling
• pure polyester double braid
• balanced elongation under load
• consistent grip on winches and clutches
• shape-stable and durable under continuous load
• cut to length
• custom made options available

Technical data

• Construction: double braid, load sharing
• Core material: polyester
• Cover material: polyester
• Elongation at 10 % of breaking load: 2.0 %
• Application: sheets for cruisers / sport cruisers
• Sales unit: by the meter
• Available diameters: 8mm, 10mm, 12mm, 14mm, 16mm

Diameter	Breaking load (kN)	Breaking load (daN)	Breaking load (kg)
8mm	15.56	1556	approx. 1586
10mm	26.11	2611	approx. 2662
12mm	35.56	3556	approx. 3626
14mm	45.56	4556	approx. 4648

Custom configuration

Gemini X is available by the meter and can be configured depending on the product:

• cut only
• LT splice with core and cover
• LT thimble splice with core and cover
• stitched whipping
• pilot eye

Custom made options are available.

Typical applications

• mainsheet on cruising yachts
• genoa sheets on cruisers
• sheets for furling headsails
• control lines with moderate elongation requirements
• universal sheet handling on sport cruisers

Our recommendation for your boat

Sail area in m2	Recommended diameter Gemini X
20	8–10mm
30	10–12mm
40	12–16mm
50	14–18mm
60	14–18mm
70	16–20mm
80	16–20mm
90	18–22mm
100	18–22mm

The stated diameters are recommendations only based on sail area. Actual requirements may vary depending on individual use, trimming setup, deck hardware and personal preference. If in doubt or for specific applications, we recommend contacting us prior to selection.