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Product

submarine & offshore armoured optical cable IEC 60794 / Double-SS Armoured FOOptical (-45 to +85 °C)Low-Temperature TPU Outer Sheath

1–24F OS2 / OM3 / OM4 Double Stainless-Steel Tube & Braid Armoured Tactical & Marine FO CableIEC 60794 / Double-SS Armoured FO — Optical — -45 to +85 °C Subsea & Offshore Cable

1–24F OS2 / OM3 / OM4 Double Stainless-Steel Tube & Braid Armoured Tactical & Marine FO Cable (IEC 60794 / Double-SS Armoured FO) engineered for Optical service across -45 to +85 °C (min. bend radius 10 × OD).

Water-resistant

Ozone, UV & moisture

Oil-resistant

Approved

Configuration

Order designation: Double-Armoured FO 4–12F EOM/Sub
Outer Ø ≈: 8.2 mm
Net weight ≈: 260 kg/km
Tensile rating ≈: 48.0 kN
Core / stranding: Laser-welded SS FIMT + Steel/Aramid Armour

All sizes (3)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: Optical
Operating temp.: −45…+85 °C
Min. bend radius: 10 × OD
Core / conductor: 900 µm Tight-Buf
Outer protection: Low-Temperature
Standard: IEC 60794 / Doub

Typical values for this cable type, based on IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification — confirmed in the datasheet and quotation for your order.

Application fit

Is Double-Armoured FO right for your machine?

Fixed installation

Suitable

Laser-welded stainless-steel / copper-tube FIMT or water-blocked loose-tube construction protects ITU-T G.652D / G.654E / OM3/OM4 fibres.

Immersion & wet locations

Suitable

Hermetic metallic optical tube, steel vault and high-density PE/PUR serving withstand up to 8,000 m deep-ocean hydrostatic pressure.

Offshore platform & shipboard deck trays

Suitable

Galvanized steel or bronze wire armour and SHF2-MUD / PUR / PE jacket resist seabed abrasion, fishing-gear impact, oil and drilling mud.

Drilling jumbo & rotary mast feed

Suitable

NEK 606 QFCU and IEEE 1580 S670T executions maintain high-speed optical telemetry across hazardous offshore topside zones.

Energy chain / drag chain

Not suitable

Submarine and armoured offshore optical cable is not intended for indoor factory automation drag chains.

Use Deepwater ROV Optical Tether

Typical machinesMarine & Offshore CableSubmarine Telecom & Cabled Ocean ObservatoriesIsland, Coastal & Inter-Platform Subsea Optical LinksOffshore Platform & FPSO Fire-Safe Optical BackbonesTactical Marine & Harsh-Environment Optical Deployment

Construction

Layer by layer

Shown: Double-Armoured FO (IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification) featuring 900 µm tight-buffered optical fibers (1-24f), helical stainless-steel armour tube and low-temperature tpu outer sheath (4-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	900 µm Tight-Buffered Optical Fibers (1-	Single-mode OS2 or multi-mode OM1—OM4 tight-buffered fibers
2	Helical Stainless-Steel Armour Tube	Flexible interlocking stainless-steel tube resisting severe crush loads
3	Stainless-Steel Wire Braid & Aramid Yarn	Secondary stainless-steel braid + high-modulus aramid tensile yarns
4	Low-Temperature TPU Outer Sheath	Cut-, oil- and cold-resistant black thermoplastic polyurethane jacket

Double-Armoured FO — Standard Subsea & Offshore Execution

Built to IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification with 900 µm tight-buffered optical fibers (1-24f) and low-temperature tpu outer sheath

Double-Armoured FO — Custom Continuous Winch / Reel Length

Available in custom continuous subsea winch, tow or seabed lengths with water-blocked terminations

Double-Armoured FO — Hydrostatic, Tensile & Routine Certified

Supplied with EN 10204 3.1 routine dielectric, optical OTDR / DC resistance & tensile test report

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / transmission duty: Optical (IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification)
Core / conductor construction: 900 µm Tight-Buffered Optical Fibers (1-24F) — Single-mode OS2 or multi-mode OM1—OM4 tight-buffered fibers
Primary dielectric / buffering: Helical Stainless-Steel Armour Tube — Flexible interlocking stainless-steel tube resisting severe crush loads

Thermal

Continuous operating temperature: −45…+85 °C (subsea & offshore duty)
Hydrostatic & thermal stability: Verified thermal and hydrostatic stability per IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification
Storage & transport temperature: −40…+80 °C on export wooden/steel winch reel

Mechanical

Outer protection / armouring: Low-Temperature TPU Outer Sheath — Cut-, oil- and cold-resistant black thermoplastic polyurethane jacket
Minimum bending radius: 10 × OD
Armour, strength member & mechanical duty: Stainless-Steel Wire Braid & Aramid Yarns — Secondary stainless-steel braid + high-modulus aramid tensile yarns

Resistance

Seawater, hydrostatic & hydrolysis resistance: Engineered for continuous seawater immersion, pressure cycling and hydrolysis resistance per IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification
Oil, drilling mud & abrasion resistance: Resistant to marine hydraulic oils, salt mist, winch sheave wear and seabed abrasion per IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing standard: IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification
Environmental & test standards: IEC 60228 / IEC 60794 / ITU-T G.972 / IEEE 1580 / EN 10204
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: Double-Armoured FO
Sheath colour & metre marking: Continuous metre-marked black outer finish (Low-Temperature )
Customs tariff (HS): 8544.49 / 8544.60 / 8544.70

Sizes

3 standard Double-Armoured FO subsea & offshore configurations

Manufactured to IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification for subsea, oceanographic, ROV, seismic and offshore applications.

Dimensions, tensile load & weights
Order designation	Configuration	Core / stranding	Outer Ø ≈ mm	Net weight ≈ kg/km	Breaking / tensile kN ≈	Min. bend R mm
Double-Armoured FO Construction Schedule (−45…+85 °C)
Double-Armoured FO 4–12F EOM/Sub	4–12 × ITU-T G.652D / G.654E SM (+ Power)	Laser-welded SS FIMT + Steel/Aramid Armour	8.2	260	48.0	125
Double-Armoured FO 24–48F EOM/Sub	24–48 × ITU-T G.652D / G.654E SM (+ Power)	Laser-welded SS FIMT + Contra-Helical Steel	17.5	680	120.0	260
Double-Armoured FO 96–192F Trunk	96–192 × ITU-T G.654E / G.652D Submarine	SS Tube + Steel Vault + Cu Tube + DA Armour	28.0	1,650	300.0	420

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom core cross-sections, pair/fibre counts, armour breaking loads and continuous winch/seabed lengths available per IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification.

Electrical, optical & thermal parameters
Configuration	Max. DC R₂₀ / Atten. Ω/km or dB/km	Rating / Impedance	Operating temp.
4–12 × ITU-T G.652D / G.654E SM (+ Power)	0.35	≤0.35 dB/km @ 1310 nm	−45…+85 °C
24–48 × ITU-T G.652D / G.654E SM (+ Power)	0.21	≤0.21 dB/km @ 1550 nm	−45…+85 °C
96–192 × ITU-T G.654E / G.652D Submarine	0.18	≤0.18 dB/km @ 1550 nm	−45…+85 °C

Every production length undergoes routine conductor DC resistance, high-voltage dielectric or OTDR continuity and dimensional verification.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor resistance, optical OTDR continuity & dimensional verification (IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification)	DC resistance at 20 °C / optical attenuation and outer diameter within IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification tolerances	Every manufactured drum length
High-voltage dielectric & insulation resistance test (IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification)	Zero dielectric breakdown and verified insulation resistance for Optical rating	Every manufactured drum length
Sample tests
Hydrostatic pressure, tensile breaking load & water-blocking qualification (IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification)	Verified subsea pressure integrity, torque-balanced tensile performance and thermal stability across −45…+85 °C	Type qualification & periodic lot audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

IEC 60794 / Double-SS Armoured FO CompliantEN 10204 3.1 Factory Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX Double-Armoured FO IEC 60794 / Double-SS Armoured FO Optical CE

Delivery form: Heavy-duty export fumigated wooden drums, steel oceanographic winch reels or submarine turntables
Standard lengths: 500 m, 1,000 m, 3,000 m, 6,000 m or custom continuous subsea lengths
MOQ: 100 m (standard configurations) · 500 m (custom subsea builds)
Lead time: 2–6 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDF1–24F OS2 / OM3 / OM4 Double Stainless-Steel Tube & Braid Armoured Tac – technical datasheet3 sizes · construction, technical data, approvals XLSXDouble-Armoured FO spec data (Excel)All 3 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-26
Updated: 2026-10-26

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What governing standard and construction define Double-Armoured FO (1–24F OS2 / OM3 / OM4 Double Stainless-Steel Tube & Braid Armoured Tactical & Marine FO Cable)?

Double-Armoured FO (1–24F OS2 / OM3 / OM4 Double Stainless-Steel Tube & Braid Armoured Tactical & Marine FO Cable) is manufactured in accordance with IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification for Optical service over -45 to +85 °C. Its 4-layer construction comprises 900 µm tight-buffered optical fibers (1-24f), helical stainless-steel armour tube and low-temperature tpu outer sheath.

What is the minimum bending radius and operating temperature range for Double-Armoured FO?

The minimum bending radius for Double-Armoured FO is 10 × OD across its continuous operating temperature range of -45 to +85 °C, ensuring mechanical, hydrostatic and dielectric reliability in subsea and offshore service.

How are the concentric layers of Double-Armoured FO arranged from inside to outside?

From inside to outside, the construction sequence is: (01) 900 µm Tight-Buffered Optical Fibers (1-24F) — Single-mode OS2 or multi-mode OM1—OM4 tight-buffered fibers; (02) Helical Stainless-Steel Armour Tube — Flexible interlocking stainless-steel tube resisting severe crush loads; (03) Stainless-Steel Wire Braid & Aramid Yarns — Secondary stainless-steel braid + high-modulus aramid tensile yarns; (04) Low-Temperature TPU Outer Sheath — Cut-, oil- and cold-resistant black thermoplastic polyurethane jacket.

What factory test certificates are supplied with Double-Armoured FO?

Every production drum of Double-Armoured FO undergoes routine conductor resistance/OTDR continuity, high-voltage dielectric and dimensional testing per IEC 60794-1-2 Double Stainless-Steel Armoured Harsh-Environment Optical Cable Specification, and is delivered with an EN 10204 3.1 factory test certificate.

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03Message for our engineers

1–24F OS2 / OM3 / OM4 Double Stainless-Steel Tube & Braid Armoured Tactical & Marine FO Cable

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