16.5.6 Abrasion and Sharp Edges

If abrasion or heat generated by friction is likely to occur, a webbing sling should be selected which is fitted with a protective sleeve or moulded wear pad, or steps taken to ensure suitable protective packing is available. Care must also be taken to protect the sling from edges and corners that might damage the sling. Protective sleeves or moulded wear pads may also be used for this purpose. Moulded wear pads are blocks of hardwearing material which are bonded to one side of the webbing surface, having no detrimental effect on the webbing. Their use is more limited than protective sleeves as they greatly reduce the flexibility of the sling and of course remain in a fixed position. They are ideal for repetitive lifts such as may occur on a production line.

Protective treatments may be applied to the webbing which help reduce the rate of wear. They also help prevent the ingress of dust or grit which can cause internal abrasion. This makes treated flat woven webbing slings ideal for use in more arduous conditions, such as on construction sites. However, these treatments may tend to reduce the flexibility and give a harder, rougher finish to the slings making them unsuitable for certain applications such as use in contact with polished surfaces. The advice of the supplier should be sought when considering the need for treated webbing slings.