Sigma Slacklines
Aluminum Ring - Linelocker / Primitive Slackline
Aluminum Ring - Linelocker / Primitive Slackline
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Light, strong aluminium ring – ideal as a linelocker or for primitive slacklines.
25 kN breaking strength at minimal weight. Perfectly smooth surface with no burrs or edges, unlike chain links. Fits 25 mm webbing.
What do you need a ring for?
The ring is the simplest way to fix a slackline webbing in place: thread the webbing back through the ring and clamp it against itself. That's the linelocker principle. For a primitive setup – the classic farmer's pulley rig without a ratchet – two rings are the basic kit: they work as both the redirect and the fixing point.
Because the ring has no burrs, the webbing doesn't get sawn or crushed. Chain links from the hardware store have sharp weld seams that cost your webbing breaking strength.
Technical data
| Small (ARBO-RING S) | Large (ARBO-RING L) | |
| Weight | 38 g | 56 g |
| Internal diameter | 28 mm | 46 mm |
| External diameter | 52 mm | 72 mm |
| Cross-section | 12 mm | 13 mm |
| Breaking strength | 25 kN | 25 kN |
| Material | aluminium (light alloy) | |
Aluminium or steel?
At 38 g the aluminium ring is noticeably lighter, making it the choice for highlines, longlines and anything you have to carry far. The steel ring handles more at 30 kN and is more abrasion-resistant, but weighs 110 g. For fixed park setups steel lasts longer; for travelling, aluminium is the more comfortable pick.
Price per piece. You need two rings for a complete setup.
Goes well with: 12 mm stainless steel shackle, anchor webbing and Tree Protector Plus. How much your gear can take is covered in our material guide.
Manufacturer: Climbing Technology / Skylotec (model ARBO-RING S / L).
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