Phillystran 7

Ropes & Strength Members for Marine, Industrial & Military Applications

151 Commerce Drive
Montgomeryville, PA 18936-9628 

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+1 (215) 368-6611
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Phillystran® Shipboard Ropes For Marine Applications - Aramid

  • Shipboard Ropes & Mast Stays
  • Break Strength:  17,000 - 58,300 lbs (76 - 260 kN)
  • Diameter:  0.50 - 0.75 in (12.7 - 19.0 mm)
  • View Technical Bulletin

Phillystran aramid fiber ropes jacketed with abrasion-resistant, moisture-blocking extruded polymers are made to order for most shipboard applications. Phillystran ropes provide the strength and low-stretch characteristics of steel with the light-weight, non-corrosive, and dielectric properties of fiber ropes.

The U.S. Navy has approved Phillystran rope for use in lifelines and boat davit preventer stays. Some of the advantages of replacing steel cables for these applications are:

  • Inter-modulation interference (IMI) is eliminated.
  • Electromagnetic interference (EMI) is eliminated.
  • Received and transmitted signal patterns are improved.
  • Expensive maintenance such as painting, greasing, and de-icing is eliminated.
  • Useful life is dramatically increased when corrosion due to sea water and stack gases is eliminated.
  • Safety concerns due to metal "fish hook" injuries and corrosion-weakened steel wire ropes are eliminated.

Applications where electrically transparent, corrosion-resistant Phillystran is the best choice are:

  • Mast and antenna stays.
  • Jackstaff and canopy-awning lines.
  • Boat gripes, preventer stays, and spanwires.
  • Mooring lines.
  • Tow lines and winch lines.
  • Lashing ropes and rigging lines.


Part Number Break Strength Diameter Weight Reel Length
lbs kN in mm lbs/1,000 ft kg/km
SB-115 17,000 76 0.50 12.7 62 90 5,000 4020-01-358-4655
SB-130 20,000 89 0.62 15.7 90 130 2,000 4010-01-288-1592


  • NAVSEA approved Kevlar* lifeline system, drawing #804-5959308
  • NAVSEA approved boat davit preventer assembly, drawing #803-5184124



Part Number EHS Equivalent
Socket Size
Break Strength Reel Length
lbs kN
HPTG 27000I 1/2 5/8 27,000 120 5,200
HPTG 35000I 9/16 3/4 35,000 160 4,500
HPTG 42400I 5/8 7/8 42,400 190 3,100
HPTG 58300I 3/4 1 58,300 260 2,400


  • Weights and Dimensions can vary
  • Kevlar® is a Registered Trademark of DuPont


CAUTION: Break Strength: The breaking strength of a rope is the load at which a new rope will break when tested under laboratory conditions. Break strength should not be mistaken for safe working load. Safe Working Load: Because of the wide range of rope use, rope condition and the degree of risk of life or property, it is not possible to make a blanket recommendation for safe working load. It is ultimately dependent on the rope user to determine what percentage of break strength is their own safe working load. Wear: Ropes wear out with use; the more severe the usage, the greater the wear. It is often not possible to detect wear on a rope by visible signs alone. Therefore, it is recommended that the rope user determine a retirement criteria for ropes in their application. For assistance in developing safe working load and retirement criteria for each application please call or write Phillystran, Inc. 

All printed statements, data and recommendations are based on reliable information and tests, and are presented without any guarantee or warranty. Statements regarding the use of Phillystran, Inc.'s products and processes are not to be construed as recommendations for use in violation of any applicable laws, regulations or patent rights. © All rights reserved.

Phillystran manufactures high tenacity fiber ropes, strands, braids and strength members from fibers such as Kevlar®, Twaron®, Technora®, Vectran®, Dyneema® and Zylon®. Phillystran also manufactures polyester ropes for specialized applications. Phillystran products are used worldwide in a broad range of marine, industrial and military rope applications including mooring lines, life lines and winch lines, boat rigging, structural and support lines, power cables and broadcast tower guy cables.