Polyester web is durable and similar in aesthetic to nylon. This material is suitable for use for applications that require lifting heavy loads. Meanwhile, polyester webbing has low water-absorption and is more mildew and rot-resistant than nylon.

Polyester webbings as a lower breaking point when compared to nylon webbing of the same type. And nylon webbing is much weaker when it is wet and it will stretch while it is damp or wet. However, polyester web can be wet and still be a very strong webbing.

Nylon and polyester slings have many advantages over chain alternatives. Not only do they offer excellent grip and stretch, but they are also resistant to various chemicals and acids. The differences between nylon and polyester slings mainly relate to flexibility, texture, grip and durability.

The safety factor refers to the ratio of the safe working load to the breaking load. At present, the safety factor that we can produce for colored slings are 4:1, 5:1, 6:1, and 7:1. For example, for a 1T sling, its safe working load is 1T. If the safety factor is 4:1, then its breaking load is 1X4=4T. If the safety factor is 5:1, its breaking load is 5T, and so on.