The use of a synthetic sling can offer a number of benefits for rigging purposes. The most regularly used synthetic web slings are made of nylon or polyester-type yarns. When using a synthetic sling, you are able to adjust your load contour with a tighter grip, affording a better load protection, especially when you are handling highly polished or delicate surfaces that you do not want to damage. Another advantage is the availability of wider widths and the inherent shock absorbency of the synthetic material and its unique properties.
Certain synthetic materials perform much better than others in specific applications and environments. Synthetic webbing materials other than nylon and polyester can also be used.
The Mark of Excellence
Synthetic slings are marked by the manufacturer to show the rated load for each type of hitch, and the type of synthetic web material used. In addition, slings may be marked to show a manufacturer’s code or stock number, and the name or trademark of that manufacturer.
The rated capacity of a sling is based upon the nominal breaking strength of the material used in the sling, and other additional factors which may affect the overall strength of a sling.
A qualified person should perform periodic inspections of the slings based on the regularity of sling use and the severity of its service conditions. Visual inspections before each lift or usage should be conducted to determine if it is capable of safely making the intended lift.
You will be looking for:
1. Holes, tears, cuts, or snags
2. Broken or worn stitching in load bearing splices
3. Abrasive wear and tear
4. Knots in any part of the synthetic sling
5. Damage to the end fittings
6. Other visible damage that could causes doubt as to the strength of the sling
Also, it is advisable to make periodic inspections of synthetic web slings yearly for normal service use, or monthly to quarterly for severe service use. Your synthetic sling should be stored in a cool, dry, and dark place. Slings should also be kept free of dirt and foreign material. Mild soap and water can be used to clean them.
