These Sealed Blok™ self-retracting lifelines (SRL’s) incorporate a patented concept that separates all dynamic components, including the motor spring and brake, from foreign elements such as grease, moisture, and dirt. You can always trust your SRL to work at peak efficiency without worrying about the environment you're working in.
3M's sealed SRLs are backed by decades of proven field service for absolute confidence, safety, and reliability. An SRL’s lifeline will extend as the user moves away, and retract automatically enabling the user to move about within a recommended working area at normal speeds. Should a fall occur, a speed sensing brake system will activate stopping the fall and reducing the forces imposed on the user to safe levels.