Successful missions depend on aircraft platforms that use reliable, long-lasting MIL-STD-1760 umbilicals. But, our customers have told us that they often have to replace standard umbilicals using screw-on lanyard, quick-release connectors. Why? Because they’re stiff, hard to handle and don’t withstand pylon installation or operation. Maintenance is time-consuming and costly because it involves removing many aircraft components to replace the damaged umbilicals with new ones.

Gore offers the only sealed hybrid solution proven over time to solve all of these problems. An affordable, easy-to-install umbilical with a connector system that doesn’t fail when installed or during operation.


GORE MIL-STD-1760 Assemblies with the L3Harris™ Field Replacement Connector System (FRCS) are the only solution proven to guarantee safe operations with a low bend force over wide temperatures. They’re also proven to protect against electromagnetic interference (EMI) with at least 85% optical coverage. Not only that, our assemblies have a life beyond 100,000 flexes in harsh aerospace conditions without ever failing to do their job.

We thoroughly test and qualify our assemblies according to stringent military specifications. They’re certified for more than 100 ejected releases and 400 manual disconnects. For more than 25 years, our assemblies have delivered 100% successful store releases on many defense airborne platforms.


Robust and highly flexible, our assemblies can be easily installed in limited spaces of aircraft pylons. They’re available in a variety of wire types by protocol with a smaller cross-sectional diameter compared to standard umbilicals. They can be easily attached and removed from ASI (Aircraft Store Interface) and MSI (Mission Store Interface) while operating in an NBC (Nuclear Biological Chemical) environment. Our assemblies reduce maintenance, downtime and product lifecycle costs because they don’t have to be replaced after each use.

Construction of Gore MIL-STD-1760 Assemblies, Class 1 (FO) Version

Robust, highly flexible layout of GORE MIL-STD-1760 Assemblies, Class 1 (FO) Version


We worked with L3Harris to compare the performance of our assemblies with their FRCS against standard umbilicals that use screw-on MIL-STD-38999/31 lanyard connectors. We configured a simulator on stores with racks adjusted to represent various pylon stations accurately, including retention methods. Then, we captured the data to validate connector loads and store velocity during ejected pit releases.

Our results showed that 1 out of 10 new standard umbilicals separated within the specification limit after 100 drops. Also, 50% of the umbilicals were unserviceable after only 3 drops, and 25% failed to disconnect at all and ended up in the pit. But, GORE MIL-STD-1760 Assemblies with the connector system delivered consistent disconnect loads and can guarantee 100 fully high-speed instrumental drops.

L3Harris is a trademark of L3Harris Technologies, Inc.

Program Heritage


With proven safe and reliable performance, GORE MIL-STD-1760 Assemblies have been trusted in a variety of airborne platforms since the 1990s, including:

  • A-10 Warthog
  • B-1B, B-2
  • F-15E, F-16, F-35
  • Gripen, GR9
  • S-3B Viking
  • Super Lynx, Wildcat
  • Tornado GR4
  • Typhoon

If you have any questions or to discuss your specific aircraft program needs, contact a Gore representative today.

Features & Benefits

GORE MIL-STD-1760 Assemblies are engineered with unique features that make them more durable in challenging aircraft environments, including:

  • sealed hybrid assembly in a highly flexible design
  • chemically inert, temperature-resistant, EMI shielding materials
  • a variety of wire types by protocol with a smaller cross-sectional diameter
  • Class I & II standard versions or customized options to meet aircraft integration needs

Our assemblies provide aircraft system architects and engineers with many benefits that improve electrical, mechanical and environmental performance such as:

  • guaranteed 100 ejected releases
  • superior EMI protection with at least 85% optical coverage
  • excellent electrical and mechanical performance in extreme conditions
  • easy installation and extended operation from proven high flex life >100,000
  • fully tested, qualified and certified for 500 manual disconnects
  • less maintenance, downtime and replacement costs
  • a variety of connectors (standard shell size 25, 17, 15 stores with relevant inserts)
  • flight-proven on many airborne platforms with 100% successful store releases

For more information about the features and benefits of our assemblies, contact a Gore representative today.

Cable Properties

These values demonstrate the mechanical and environmental performance of GORE MIL-STD-1760 Assemblies.

Download the data sheet for more technical information and performance data.

Mechanical / Environmental Property GSC-01-86039-00
Class I (FO)
Class I
Class II
Outer Jacket Material Halogen-Free Elastomer Halogen-Free Elastomer Halogen-Free Elastomer
Outer Jacket Color1 Black Black Black
Conductor Plating2 Silver-Plated Copper Silver-Plated Copper Silver-Plated Copper
Conductor Color-Coding Individually Coded Primaries Individually Coded Primaries Individually Coded Primaries
Dielectric Material PTFE/Expanded PTFE PTFE/Expanded PTFE PTFE/Expanded PTFE
Braid Shielding2 Silver-Plated Copper Silver-Plated Copper Silver-Plated Copper
Braid Optical Coverage3 % > 85 > 85 > 85
Outer Diameter mm (in) 18.7 (0.74) 18.7 (0.74) 18.3 (0.72)
Fiber Optic Core Type2 OM3 (Multi-Mode, Graded Index)
Fiber Optic Core/Cladding/Coating 50/125/245
Fiber Optic Buffering System Expanded PTFE 900 micron
Minimum Bend Radius
mm (in)
46.8 (1.8)
93.5 (3.7)
46.8 (1.8)
93.5 (3.7)
45.8 (1.8)
91.5 (3.6)
Flex Life Cycles > 100,000 > 100,000 > 100,000
Temperature Range °C -60 to +150 -60 to +150 -60 to +150


1 Other colors available upon request.
2 Other options available upon request.
3 Other optical coverages available upon request.

More Information


For more information or to discuss your specific aircraft program needs and place an order, contact a Gore representative today. Also review our assemblies’ data sheet to get more technical information like performance data, wire types by protocols, qualifications summary, bespoke/custom assembly designs and connector options.

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