It depends on the type of damage. Slings with a damaged outer sheath but an intact load-bearing polyester or UHMWPE core can often be re-sheathed and returned to service at their original WLL — after proof load testing. Slings with cuts, tears, or damage to the core filaments must be permanently retired and destroyed. FRT's technicians assess each sling individually and provide a written recommendation. We never return an unsafe sling to service.