Medium and Heavy Wall Tubing
S3(h) Heavy Wall Flame Retardant Heat Shrink Tube
The toughest tube in the S3 family combining flame retardant marine formulation with a thickened heavy wall
- Operating temperature: -55 to 110°C
- Minimum fully recovery temperature: 135°C
- Shrink ratio: 3:1 & 4:1
- Environmental friendly, RoHS compliant, Flame-retardant
- Single or Dual wall optional
- Standard Color: Black, Other colors optional
S3(h) · Medium and Heavy Wall Tubing
Product Overview
What S3(h) Does
Heavy wall flame-retardant polyolefin shrink tubing, thickened design, with or without adhesive liner. Excellent insulation,mechanical protection and sealing for outdoor electrical equipment and connections in wet and underground environments such as marine vessels,off-shore oil platform,shipyard and harbor applications.
The toughest tube in the S3 family combining flame retardant marine formulation with a thickened heavy wall It is manufactured by Dalian United Polymer Material Co., Ltd. in Dalian China where radiation cross linking extrusion and molding are all performed in house under one quality system.
Key Benefits
- Flame retardant wet service formulation with heavy wall mechanical protection
- 3:1 and 4:1 shrink ratios so one size covers a wide diameter span
- Adhesive lined option for a fully sealed marine or buried joint
- Service range from -55 to 110 °C
- Same technique as the rest of the S3 family so crews train once
Who It Is For
Who Benefits Most from S3(h)
The buyers and site teams this product was designed around
Offshore Platform and Subsea Support Contractors
Cable protection in the most mechanically and chemically hostile positions.
Port and Crane Operators
Reeling and festoon cable protection where abrasion is continuous.
Heavy Marine Yards
Cable protection during vessel construction where cable is dragged and stood on.
Buried MV Feeder Contractors
Direct buried joints in wet ground that also need flame retardant performance.
Problems It Solves
Problems This Product Removes
Every one of these is a failure mode we have seen on real networks
A Medium Wall Tube Will Not Survive Continuous Mechanical Abuse
The thickened wall raises the abrasion and crush allowance substantially.
Wet and Mechanically Hostile at the Same Time
S3(h) is the only combination in the family that carries both the flame retardant wet service formulation and the heavy wall.
Cable Pulled over Steel Structure Loses Its Jacket
A heavy wall sacrificial layer protects the cable jacket during and after installation.
Repeated Thermal Cycling Opens up a Thin Seal
A heavier adhesive lined wall maintains its seal through more cycles.
Application Scenarios
Where It Is Used
Offshore Platform Cable Protection
Deck and riser cable in the most exposed positions.
Crane and Reeling Cable Repair
Heavy duty jacket repair on continuously flexed cable.
Buried MV Joint Outer Protection
Wet buried joints with a flame retardant requirement.
Shipyard Cable Protection
Protecting cable during vessel construction.
Harbour Quayside Power
Cable in trafficked wet salt environments.
Technical Data
Specifications and Dimensions
Test methods and requirements taken directly from the manufacturing specification
Technical Data
| Property | Test Method | Requirement |
|---|---|---|
| Tensile Strength | ASTM D2671 | ≥10.4 MPa |
| Ultimate Elongation | ASTM D2671 | ≥300% |
| Heat Aging (158°C/168h) Tensile Strength Ultimate Elongation | ASTM D2671 | ≥7.3 MPa ≥200% |
| Water absorption (23°C/24h) | ASTM D2671 | ≤0.5% |
| Low-temperature flexibility (-55°C/4h) | ASTM D2671 | No cracking |
| Heat shock (200°C/4h) | ASTM D2671 | No cracking, dripping or flowing |
| Dielectric strength | ASTM D2671 | ≥15 kV/mm |
| Volume resistivity | ASTM D2671 | ≥1.0×1014Ω·cm |
| Flammability | UL224 | VW-1 |
Dimensions
| Size S3(h) | As supplied(mm) Inner diameter D (min.) | After recovered (mm) Inner diameter d (max.) | Wall thickness t (nom.) | Standard length (m) |
|---|---|---|---|---|
| 9/3 | 9 | 3 | 2.5(with glue) | 1.0/1.22 |
| 13/4 | 12 | 4 | 2.8(with glue) | 1.0/1.22 |
| 16/5 | 16 | 5 | 3.0(with glue) | 1.0/1.22 |
| 19/6 | 19 | 6 | 2.6 | 1.0/1.22 |
| 22/6 | 22 | 6 | 3 | 1.0/1.22 |
| 25/8 | 25 | 8 | 3 | 1.0/1.22 |
| 28/6 | 28 | 6 | 3.4 | 1.0/1.22 |
| 33/8 | 33 | 8 | 3.4 | 1.0/1.22 |
| 35/12 | 35 | 12 | 4.1 | 1.0/1.22 |
| 40/12 | 40 | 12 | 4.1 | 1.0/1.22 |
| 45/13 | 45 | 13 | 4.2 | 1.0/1.22 |
| 55/16 | 54 | 16 | 4.3 | 1.0/1.22 |
| 65/19 | 65 | 19 | 4.4 | 1.0/1.22 |
| 75/22 | 75 | 22 | 4.4 | 1.0/1.22 |
| 85/25 | 85 | 25 | 4.5 | 1.0/1.22 |
| 95/29 | 95 | 29 | 4.5 | 1.0/1.22 |
| 105/30 | 105 | 30 | 4.6 | 1.0/1.22 |
| 115/34 | 115 | 34 | 4.6 | 1.0/1.22 |
| 130/36 | 130 | 36 | 4.8 | 1.0/1.22 |
| 140/42 | 140 | 42 | 4.8 | 1.0/1.22 |
| 160/50 | 160 | 50 | 4.8 | 1.0/1.22 |
| 175/58 | 175 | 58 | 4.8 | 1.0/1.22 |
| 200/65 | 200 | 65 | 4.8 | 1.0/1.22 |
| 230/75 | 230 | 75 | 4.8 | 1.0/1.22 |
| 260/85 | 260 | 85 | 4.8 | 1.0/1.22 |
CROSS REFERENCE · Tyco-Raychem: FCSM/SST-FR
Manufacturing and Quality
How It Is Made and Checked
Compounding extrusion radiation cross linking expansion and test all under one roof in Dalian
-
01
Compounding
Base polyolefin antioxidants flame retardants and functional fillers are mixed to a recipe held under our own formulation control rather than bought as a masterbatch.
-
02
Extrusion
The compound is extruded to the required wall and diameter. Co extruded products form two or three layers in a single pass so no interface can trap air.
-
03
Radiation Cross Linking
Electron beam irradiation creates the cross linked network that gives the material its shape memory. This step is what makes the product heat shrinkable.
-
04
Expansion
The cross linked part is heated expanded to its supplied diameter and cooled under tension so the expanded shape is locked in until heat is applied again.
-
05
Test and Inspection
More than 90 percent of product performance tests are carried out in our own laboratory including tensile elongation heat aging dielectric strength and tracking resistance.
-
06
Packing and Traceability
Each batch carries a production record so a delivered part can be traced back to its compound lot and process parameters.
Certification
ISO 9001:2015
Quality management system
IATF 16949:2016
Automotive quality management
ISO 14001:2015
Environmental management
ISO 45001:2018
Occupational health and safety
GJB 9001C-2017
Defence quality management
UL 224 E341796
Extruded insulating tubing
CE / RoHS
European conformity and restricted substances
CCS / ABS / DNV
Marine classification society approvals
Comparison
How S3(h) Compares
An honest comparison so you can rule this product in or out quickly
| Product | Fire Behaviour | Wall Class | Best Environment |
|---|---|---|---|
| S3(n) | Halogen free | Medium | Tunnel metro building |
| S3(nh) | Halogen free | Heavy | Buried tunnel mining |
| S3 | Flame retardant | Medium | Marine offshore wet |
| S3(h) | Flame retardant | Heavy | Offshore port heavy duty |
Use Guide
How to Select and Install S3(h)
The sequence our engineers walk customers through on every first installation
-
01
Confirm Both Requirements
Use S3(h) only where both flame retardant performance and heavy wall protection are needed. Where only one applies a lighter grade is more economical.
-
02
Measure the Diameter Span Carefully
Heavy wall tubing is stiffer so the largest diameter must be measured accurately.
-
03
Wash Salt Off Before Cleaning
Salt residue blocks adhesive bonding. Wash then dry then wipe with solvent.
-
04
Allow Generous Heat Time
A heavy wall at 135 °C recovery takes longer. Keep the flame moving and be patient.
-
05
Shrink from One End
Drive air ahead of the flame in one direction only.
-
06
Inspect Before Handing over
Look for full conformity a continuous adhesive bead and no scorching.
FAQ
S3(h) Frequently Asked Questions
The questions buyers ask before they place an order
When would I choose S3(h) over S3
Is it approved for shipboard use
Does the heavy wall reduce flexibility
Can it be used at 36 kV
Is adhesive lined dual wall available
What is the standard colour
Still need an answer ask our engineers on WhatsApp
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