3M™ DBI-SALA® Sealed-Blok™ Self Retracting Lifeline, Retrieval, Technora Aramid Rope

30 ft. (9m) of Technora® aramid rope with retrieval function, swivel snap hook, mounting bracket and equipment bag.

SKUs: 3400840, 3400843

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Retrieval Self Retracting Lifeline with Environmentally Sealed Dynamic Components

3M's series of Sealed-Blok™ self-retracting lifelines (SRL's) incorporates proprietary and patented design concepts to keep all dynamic components, including the brake and motor spring, free of foreign elements such as dirt, grease, and moisture. Work with complete confidence, efficiency, and without worry, knowing the Sealed-Blok™ SRL will remain unaffected by the harshest environments.

3M's sealed SRL's are backed by decades of dependable service in the field for absolute confidence, safety, and reliability. An SRL lifeline will extend as the user moves away and automatically retract as they return. This flexibility allows the user to move within a limited safe working range at normal speeds. When a fall occurs, a speed sensing brake system will activate, reducing the fall forces exerted on the user to safe levels and ultimately arresting the fall.

Length Options:

30 ft. (SKU: 3400840)
55 ft. (SKU: 3400843)

Product Highlights

  • Environmentally sealed dynamic components
  • 3-way emergency retrieval system
  • Extremely durable construction
  • Technora® aramid rope lifeline
  • Anti-ratcheting locking system
  • Built-in carrying handle
  • Swiveling snap hook with impact indicator

3M™ DBI-SALA® Sealed-Blok™ Self Retracting Lifeline, Retrieval, Technora Aramid Rope Specifications *( 1,2 )

Model Number(s):
3400840, 3400843
Product Series:
Product Category(s):
Sealed SRLs
Length Option(s):
30 ft. (SKU: 3400840)
55 ft. (SKU: 3400843)
Anchor Material:
Zinc Plated Steel
Harness Connection Type:
Housing Material:
Aluminum & Stainless Steel
Housing Type:
Lifeline Hook Material:
Zinc Plated Steel
Lifeline Material:
Technora Rope, Galvanized Cable
Technora Rope
Mounting Type:
Overhead Anchor Point
Recommended Industry:
Mining, Utilities
Specifications Met:
ANSI A10.32, ANSI Z359.1
Weight Capacity:
420 lbs. (190 kg)
Product Weight(s):
30 lbs. (SKU: 3400840)
45 lbs. (SKU: 3400843)
UPC / GTIN No(s).:
00840779108220 (SKU: 3400840)
00840779108237 (SKU: 3400843)
Manufacturer Part No(s).:
70007459632 (SKU: 3400840)
70007450730 (SKU: 3400843)

Product Specification Disclaimer *( 1, 2 )

*1. Manufacturer's specifications are supplied by the manufacturer and are subject to change without notice. The data and information contained in these specification sheets are representative; the ratings supplied are suggested as guidelines and should only be used for evaluating your specific application.

**2. Although Reliable Electric Products Company Inc. has made every effort to ensure the accuracy of information by third parties, it is ultimately the customer’s responsibility to validate these specifications to ensure they are suitable for SAFE use in a particular application. Reliable Electric Products Company Inc. disclaims to the extent permitted by law, any warranty or liability.

Manufacturer's Extended Intended Use Disclaimer

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.

Sealed Self-Retracting Lifeline - Instruction Manual

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ANSI-z359-14 SRL Supplement (Español)

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Self Retracting Devices Inspection and Servicing Guidelines

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Anticaídas Autorretráctiles Sealed-blok™ (Español)

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Sealed-Blok™ Self Retracting Lifelines Brochure

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