Teufelberger (New England Ropes)
Braided Safety Blue is the industry standard 16-strand climbing rope. Our engineered design and attention to manufacturing details set Braided Safety Blue apart from similar ropes. First, each strand in Braided Safety Blue is comprised of tightly plied fibers. Other manufacturers skip the step of plying the strand yarns which makes their ropes more susceptible to snagging. Second, our strands feature fibrillated polyolefin. This fiber is a better quality fiber than the stiff MFP monofilament polypropylene used in other 16-strand climbing ropes. Fibrillated polyolefin is softer and more flexible which translates into a rope with superior knotability, better handling and no "memory" – the rope coils nicely and does not have kinks after it's untied. The entire rope is coated with a protective finish to enhance abrasion resistance.
Very little degradation from sunlight. Can be used outside over long term if inspected regularly.
Nylon will degrade with strong oxidizing agents, mineral acids, and 90% formic acid. May discolor when exposed to high levels of carbon dioxide. Polyester has good resistance to most chemicals, except 95% sulfuric acid and strong alkalines at boil. Polypropylene has excellent resistance to most acids and alkalines, except chlorosulphonic, concentrated sulfuric acids, and chlorinated hydrocarbons at 160°F. Additionally polypropylene withstands most diluted bleaching solutions.
Nylon melts at 460°F with progressive strength loss above 300°F. Polyester melts at 480°F with progressive strength loss above 300°F. Polypropylene melts at 300°F with progressive strength loss above 200°F.
Good resistance to the passage of electrical current. However, dirt, surface contaminants, water entrapment, and the like can significantly affect dielectric properties. Extreme caution should be exercised any time a rope is in the proximity of live circuits.
No blanket safe working load (SWL) recommendations can be made for any line because SWL's must be calculated based on application, conditions of use, and potential danger to personnel among other considerations. It is recommended that the end user establish working loads and safety factors based on best practices established by the end user's industry; by professional judgment and personal experience; and after thorough assessment of all risks. The SWL is a guideline for the use of a rope in good condition for non-critical applications and should be reduced where life, limb, or valuable property is involved, or in cases of exceptional service such as shock loading, sustained loading, severe vibration, etc. The Cordage Institute specifies that the SWL of a rope shall be determined by dividing the Minimum Tensile Strength of the rope by a safety factor. The safety factor ranges from 5 to 12 for non-critical uses and is typically set at 15 for life lines.