Rifled Cover^® Technology

Rifled Cover Technology is a major patented breakthrough only available on Slingmax^® Twin-Path^® high-performance fiber roundslings. Rifled Cover Technology works like the inside of a rifle barrel, where the bullet spins as it leaves the muzzle of the gun. The helical winding of the core fibers significantly improves strength and efficiency.

Twin Path Sling with Rifled Cover on Twin Path roundsling machine

Twin-Path high-performance roundslings with patented Rifled Cover Technology yield three major advantages:

Increased strength-to-weight ratio. 17% increased breaking strength with the same amount of core yarn.
Consistent and predictable breaking strength for every sling.
Repeatability in the manufacturing process.

Twin-Path roundslings are made with the Slingmax Covermax^® Cover. The Covermax Cover is made with a heavy-duty, double-layer industrial nylon material. The outside cover is green, and the inside cover is red. If damage on the green cover allows red to show through, return the sling for factory inspection and repair. This cover has been tested to provide the best ultraviolet (UV) protection and the best abrasion protection on any commercially-available synthetic lifting sling.

Enhanced HMPE Covermax Cover
Twin-Path slings that are 6" or wider feature an outer jacket woven with durable HMPE fibers, designed to enhance toughness and longevity. These high-performance fibers provide exceptional resistance to water and chemicals, significantly extending the sling’s lifespan.

When under extreme tension near the working load limit, the jacket helps prevent rupture or bursting, ensuring added safety. With a 10% higher burst strength than previous top-performing materials and exceeding industry minimums by 54%, this new enhanced covermax cover sets a new standard for durability and reliability.

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Green Twin-Path synthetic round sling shown coiled against a white background, with a bright orange Check Fast tag and reinforced Covermax cover for heavy-duty lifting and rigging applications.

SYNTHETIC SLINGS

Slingmax has been a trusted supplier of high performance synthetic roundslings to the industrial and heavy lifting markets since 1986. Think Twin-Path^® slings for all your heavy lifting and rigging needs.

Yellow equalizer block with a metal hook attached to a green Twin-Path synthetic roundsling, shown hanging against a white background in a lifting configuration.

RIGGING ACCESSORIES

Explore our full range of specialty rigging accessories engineered to solve complex lifting challenges, from balancing loads to testing connection points to improving on-site load control. This includes solutions like the Synthetic Equalizer Block and Pad Eye Tester.

Black Gator-Flex wire rope grommet shown in an endless loop configuration , used for heavy lifting and rigging.

WIRE ROPE DESIGNS

Slingmax multi-part wire rope slings are designed for increased capacity and excellent flexibility. The three-part Tri-Flex, nine-part Gator-Laid, and nine-part Gator-Flex grommet have excellent D/d ratios and can be fabricated in shorter lengths.