Tethers with aluminium safety hook with ferrule

Tethers with aluminium safety hook(s) with ferrule. Easy opening and closing. 
Lightweight hook. Polyester flexible tether webbing with retro-reflective thread to optimize visibility at night. Flat, elastic or mixed version, 23 mm wide webbing.
Plain flat 1.5 m webbing, or elastic 1 m that extends to 1.5 m.  
Strain indicator.
Supplied in a mesh bag.
ISO12401 certified.

  • HARNAIS_ISO_12401
  • made_by_plastimo_bleu


Ref. Type of tethers Number of hooks Length Weight
66833 flat 1 1,5 m 175g
66837 flat 2 1,5 m 275g
66835 elastic 1 1 m extends to 1.5 m 185g
66839 elastic 2 1 m extends to 1.5 m 285g


Aluminium safety hook with ferrule
Opening : 20 mm.
Weight of the hook : 100 g.

Retro-reflective thread to optimize visibility at night.

Meets RORC-OSR specifications
When the tether is submitted to heavy load (ex. man over board), the strain indicator exposes a label indicating that tether should be replaced.

Official documents

  • EU Certificate_Tethers for lifejackets and harnesses EU Certificate_Tethers for lifejackets and harnesses Download
  • EU Compliance Statement_Tethers EU Compliance Statement_Tethers Download

Plastimo tips & tricks

A tether is the indispensable accessory which makes an inflatable lifejacket a fully featured safety equipment. Provided of course, that you have originally selected a lifejacket with integrated harness : the only version providing the adequate resistance and featuring a stainless steel triangle to secure the tether.

When using a harness in conjunction with a tether, it is essential to check that both the harness and the tether are designed to the same standard, and specifically to the same breaking strain level.
The breaking strain is defined by the original standard, but also by the age of the harness or tether : the ageing and general condition of the webbing impacts negatively its level of performance.

Essential features

• Number of lines : a double tether has 2 lines or strands. It enables you to remain clipped as you move about the deck.

• Number of hooks : there is not systematically a hook at both ends ; the tether can be attached to the harness via a webbing loop.

• Length of lines : standard length is 2 m. In the case of a double tether, the 2nd line is reduced to 1 m so that you can clip yourself on a shorter length. The very principle of a harness is to prevent a man falling overboard and being dragged ; one must therefore be clipped on a short length, as often as possible.  

• Elasticity : the tether stretches out when needed and contracts when not under tension, which contributes to a greater freedom of movement and improved safety, as it is kept short and tidy to prevent accidental snagging. The elastic tether is the obvious choice for yachtsmen who wear their harness regularly.

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Retro-reflective strap jacklines

Ultra-flat polyester webbing, 26 mm wide. Retro-reflective thread optimizes visibility at night. Fixing loops. Breaking strain 2 400 DaN (2 450 kg). Sold by the pair, shackle not included.