POLYESTER ROUND SLING

Synthetic round sling

are lightweight, flexible, continuous-loop synthetic lifting assemblies constructed from high-tenacity polyester core yarns enclosed within a seamless, heavy-duty protective double-wall polyester jacket, engineered for gentle yet high-capacity handling of delicate or heavy industrial cargo.

Color-coded protective sleeves (Purple, Green, Yellow, Tan, Red, Orange) adhere to WSTDA industry standards for rapid visual Working Load Limit (WLL) verification.

Internal load-bearing polyester strands are completely isolated from surface abrasion, UV degradation, grease, and dirt by the outer protective sleeve.

Wraps tightly around cylindrical, smooth, or irregular loads while maintaining low elongation (<3% at WLL) for precise headroom control.

Fully proof-tested, serialized, and equipped with permanent synthetic capacity tags detailing WLL for vertical, choker, and basket hitches.

Class	Sling Configuration	Protective Sleeve	Core Fiber Material	Primary Advantage
Endless Roundslings (ENR)	Continuous Loop (No Fixed Eyes)	Seamless Double-Wall Polyester	100% High-Tenacity Polyester	Rotatable Wear Points & Maximum Longevity
Eye & Eye Roundslings (EER)	Fixed Eyes with Abrasion Sleeves	Reinforced Double-Wall Jacket	100% High-Tenacity Polyester	Direct Hook Connections & Ergonomic Handling
High-Tonnage Heavy-Duty	Endless / Multi-Path Loop	Heavy Armor Anti-Cut Sleeve	High-Tenacity Polyester / High-Modulus	Ultra-High Capacity for Marine & Offshore Lifts

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Model Naming & Series Documentation

Example Designation: SWR-PRS-0530-ENR-DWJ-10FT
SWR: Brand / Supplier Identifier (Southwest Wire Rope)
PRS: Product Category (Polyester Round Sling)
0530: Rated Vertical Working Load Limit (0530 = 5,300 lbs / Green)
ENR: Configuration Type (Endless Round ENR / Eye & Eye Round EER)
DWJ: Jacket Style (Double-Wall Jacket DWJ / Cut-Resistant Sleeve CRS)
10FT: Standard Reach / Overall Length (10 ft)

Endless Polyester Roundslings (ENR / Type EN)
- Capacity Range: 2,600 lbs – 100,000+ lbs (1.1 t – 45+ t)
- WSTDA Color Coding: Purple (2,600 lb), Green (5,300 lb), Yellow (8,400 lb), Tan (10,600 lb), Red (13,200 lb), Orange (16,800+ lb)
- Body Construction: Continuous endless loop encased in a woven polyester protective sleeve
- Primary Feature: Allows operators to continuously rotate hook and load contact points along the sling body, distributing friction and extending service life in vertical, choker, and basket hitches
- Compliance: ASME B30.9 / WSTDA
Eye & Eye Polyester Roundslings (EER / Type EE)
- Capacity Range: 2,600 lbs – 31,000 lbs (1.1 t – 14 t)
- Eye Construction: Pre-formed loop eyes enclosed in heavy-duty wear-resistant synthetic sleeves
- Body Construction: Round polyester core strands wrapped in a protective outer jacket
- Primary Feature: Combines the non-marring softness and flexibility of a round sling with the familiar handling of a traditional eye-and-eye web sling for quick rigging onto crane hooks
- Compliance: ASME B30.9 / WSTDA
High-Tonnage Heavy-Duty Roundslings
- Capacity Range: Up to 500,000+ lbs (200+ t)
- Outer Sleeve: Multi-layer cut-resistant armor jacket with reinforced wear pads
- Core Materials: High-tenacity polyester core fibers or high-modulus synthetic strands
- Primary Feature: Engineered for heavy shipyard lifts, offshore oil rig modules, and large industrial turbines where extreme load capacity and lightweight handling are required
- Compliance: ASME B30.9 / OSHA / WSTDA