Some Things About Slings

Synthetic slings have certain advantages over steel or wire chokers.

What are the advantages, you ask? Synthetic slings:

  • Cinch tightly around the load, giving extra security during lifts.
  • Do not rust.
  • Experience minimal twisting and spinning during lifting.
  • Are lighter in weight to permit ease of rigging.
  • Provide low risk of crew members being struck and injured by a free-swinging sling.
  • Stretch under load to absorb heavy shocks (where sling stretch must be minimized, use a larger-capacity or polyester sling).
  • Are adjustable in length.

Of course, it can’t all be good – here are some of the disadvantages of using synthetic slings:

  • They are easily cut and have poor abrasion resistance when compared to chain and wire-rope slings. Protective devices provided by sling manufacturers can minimize these effects.
  • If the loops on a webbed sling are allowed to slip too much, it is possible for them to cut into the cinched eye or loop and cause severe sling damage or breakage.
  • Nylon slings are damaged by acids, but resist caustics.
  • Polyester slings are damaged by caustics, but resist acids.
  • Sunlight, moisture and temperatures above 90°C (194°F) damage both nylon and polyester slings.

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