PolyFlex Polyester Round Slings
PolyFlex Round Slings are Amick’s standard polyester round slings, constructed from continuous loops of load-bearing polyester yarn encased in a protective woven polyester jacket. The result is a sling that is exceptionally supple and conforms readily to uneven and irregularly shaped loads during a lift.The soft polyester jacket protects finished, painted, or delicate surfaces from scratching and marring — making PolyFlex slings a preferred alternative to wire rope or chain in applications where load protection is a priority. The endless design allows the sling to be rotated between uses, distributing wear across the entire body for extended service life.
PolyFlex round slings stretch approximately 3–5% at rated capacity, providing enough elongation to absorb minor dynamic forces while maintaining tighter load control than nylon. Polyester does not lose strength when wet and offers good resistance to most common acids, bleaching agents, and industrial chemicals.
Compatible with vertical, choker, and basket hitches. Well suited for manufacturing, plant maintenance, mechanical installation, construction, and marine operations.
Powerflex High-Performance Spectra Round Slings
Powerflex Round Slings are Amick’s high-performance lifting slings, engineered for applications where maximum strength and minimum weight are critical. Built with Spectra fiber — an ultra-high molecular weight polyethylene (HMPE) — Powerflex slings deliver dramatically higher lifting capacities at a fraction of the weight of comparable wire rope or chain slings.Spectra fiber provides several advantages over standard polyester round slings: significantly higher strength-to-weight ratio, lower elongation for more precise load positioning, and excellent resistance to moisture, chemicals, and UV exposure. Powerflex slings are available in capacities up to 300,000 lbs, making them suitable for the most demanding heavy lifts.
Like all round slings, the Powerflex design features continuous loops of load-bearing fiber encased in a protective outer jacket. The jacket shields the core fibers from abrasion, dirt, and environmental exposure while providing a soft, non-marring surface that protects finished loads during lifting.
Well suited for heavy industrial lifting, construction, bridge work, energy, and petrochemical operations — particularly where the strength of wire rope is needed but with significantly less weight and greater flexibility.
Temperature and Use Considerations
PolyFlex polyester round slings should not be used in temperatures above 194°F (90°C) or below -40°F (-40°C). They are susceptible to damage from strong alkalis and concentrated sulfuric acid.Temperature limits for Powerflex Spectra/HMPE slings differ from polyester — HMPE fibers begin to lose strength at lower temperatures than polyester. The standard polyester limit of 194°F does NOT apply to Powerflex. Consult Amick for specific temperature ratings before use in elevated temperature environments.
Per ASME B30.9, slings in contact with edges, corners, or protrusions shall be protected with material of sufficient strength and thickness to prevent damage. Use wear pads or corner protection when lifting loads with sharp edges. Remove any round sling from service immediately if the outer jacket is cut and inner core fibers are exposed. Do not tie knots in a round sling to shorten it — knots significantly reduce breaking strength.
Built in Pittsburgh
Every PolyFlex and Powerflex round sling is fabricated at Amick’s Pittsburgh facility. All round slings require regular inspection per OSHA 1910.184 and ASME B30.9.To discuss which round sling fits your application, contact Amick at 412-429-1212 or visit our lifting slings.