Why Choose STW-PET-HT Woven Wrap Around Sleeving?
The main selection question for this sleeve is not simply whether the fabric tolerates heat. It is whether the finished sleeve continues to cover the harness when exposed to heat.
STW-PET-HT addresses that concern through its self-closing construction. The split allows the sleeve to be installed over existing wiring, while its closure performance helps keep the opening in place at 175°C.
1. Closed profile at 175°C
The sleeve is designed not to open or spread apart at the stated temperature.
2. Coverage across the split
The wrapped edges help keep wires covered where an opening could otherwise expose them.
3. Installation over assembled harnesses
Fit the sleeve around wiring without removing terminals or connectors.
4. Access for later changes
The split construction accommodates harness installation and rework.
5. Fabric construction
Provides a textile sleeve format for automotive wire routing.
6. Flexible fit along the harness
Follows the routing path, including bends and changes in direction.
7. Project-specific sizing
Sleeve size can be selected according to the actual harness diameter and installation conditions.
| Material |
PET Multifilament+monofilament |
| Principal feature |
Remains closed at 175°C without opening or spreading |
| Overlap |
≥35% |
| Working Temperature |
-40°C to +150°C |
| Melting Point |
240±10°C |
| Flammability |
UL94V0,FMVSS302 |
| Abrasion Resistance |
Refer to ISO6722 |
| Aging Resistance |
Refer to ISO6722 |
| Liquid Resistance |
Refer to GMW14327 |
| Standard Color |
Orange |
| Certification |
RoHS,REACH,Halogen free |
| Halogen Free |
Yes |
| Cutting Tool |
Blade or hot knife |
Specifications
|
Part No
|
Nominal Size
(mm)
|
Spread Width
(mm)
|
Bundle Dia Range(mm)
|
Packing
Length
(m/spool)
|
|
Min
|
Max
|
|
STW-PET-003-OR-HT
|
Φ3
|
25±2
|
2 |
4 |
100 |
|
STW-PET-005-OR-HT
|
Φ5
|
29±2
|
4 |
6 |
100 |
|
STW-PET-006-OR-HT
|
Φ6
|
34±2
|
4 |
7 |
100 |
|
STW-PET-008-OR-HT
|
Φ8
|
46±2
|
6 |
10 |
100 |
|
STW-PET-010-OR-HT
|
Φ10
|
55±2
|
8 |
11 |
100 |
|
STW-PET-013-OR-HT
|
Φ13
|
65±2
|
12 |
15 |
100 |
|
STW-PET-016-OR-HT
|
Φ16
|
77±2
|
15 |
18 |
100 |
|
STW-PET-019-OR-HT
|
Φ19
|
104±5
|
18 |
20 |
50 |
|
|
|
|
23 |
26 |
25 |
|
|
|
|
27 |
31 |
25 |
|
|
|
|
30 |
34 |
25 |
|
|
|
|
37 |
40 |
25 |
|
|
|
|
48 |
52 |
25 |
● Note: Select the size according to the actual bundle diameter and ensure at least 35% overlap after installation.
Typical Applications
Wiring near elevated-temperature areas
For harness sections where heat exposure makes closure performance a concern, STW-PET-HT helps keep the sleeve wrapped around the wires.
Preassembled automotive harnesses
Connectors and branches may prevent a continuous tube from being threaded onto the harness. The split design allows installation after assembly.
Harness sections requiring inspection or rework
The wrap-around format provides access to wiring without cutting away a permanently closed tube.
Routes with bends and diameter changes
These areas should be checked during size selection to ensure the sleeve retains suitable coverage along the full route.
Start with the harness outside diameter, then identify its widest section, bends, branches and connector locations. Tell us where the sleeve will be exposed to heat, the expected temperature and how long the exposure lasts. These details allow us to check both the size and whether the documented temperature performance matches the application.
Customization Available
MJ FLEX can discuss size, cut length, color and packaging requirements. For a custom request, please provide a harness drawing or diameter range, the required sleeve length per harness, annual demand and any specified temperature test conditions.
Temperature and closure claims should be matched to the test results for the specific STW-PET-HT construction supplied. If your project requires a defined heat-aging duration, flame test or automotive standard, share the requirement before approval so the corresponding evidence can be reviewed.
The approved sample and specification provide the reference for production. Key checks should include sleeve dimensions, appearance and whether the finished sleeve closes around the agreed harness diameter. Any project-specific 175°C acceptance test should be defined in the approved specification.
Frequently Asked Questions
01. What makes STW-PET-HT different from a standard split fabric sleeve?
Its distinguishing feature is that the self-closing opening remains closed at 175°C instead of spreading apart.
02. Does “175°C” mean the sleeve can operate continuously at that temperature?
It describes closure behavior at 175°C. The allowable exposure time and continuous operating temperature must be confirmed from the relevant specification and test conditions.
03. Can it be fitted after connectors are installed?
Yes. The split construction allows the sleeve to be wrapped around an assembled harness.
04. What information do you need to recommend a size?
Please provide the harness diameter range, widest point, routing details and any areas exposed to heat.
Request a Sample or Quote
Send MJ FLEX your harness diameter, application drawing, expected temperature and exposure time. We can review the fit requirements and recommend an STW-PET-HT size for evaluation.
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