TSWA braided sleeve

Medium-thickness POLYOLEFIN HEAT-SHRINKING SLEEVE “TTPMS SERIES”

The medium thickness TTPMS Series polyolefin sleeve is a heat shrinkable sleeve that has a high shrinkage ratio. In addition to being particularly suitable for all uses in which it is necessary to cover and protect irregular objects and components, it has a good resistance to common fluids and solvents. In addition, the wall’s substantial thickness, after shrinking, makes this sleeve particularly suitable for uses where high mechanical protection is required.

  • Shrinkage ratio: from 3:1 – 4:1 Medium Thickness
  • Available diameters: from 8.0mm to 410.0mm
  • Operating temperature: -55°C to +110°C
  • Compliant with Standards: ASTMD2671, ASTMD792, UL224, IEC243, IEC93, ISO62

download the technical data sheet

Heat shrink polyolefin sleeve with Shrinkage 3:1

  • Material: Polyolefin
  • Shrinkage: 3:1
  • Field of application: electrical wiring
  • Minimum shrinkage temperature: > +90 °C
  • Min/max operating temperature: -55°C  to +125°C
  • Low flexibility temperature: no cracks (-55°C)
  • Self-extinguishing: according to UL224 VW-1
  • Colors: Transparent – Black and other colors on request
  • Tensile strength: 13 N/mm² according to ASTMD638
  • Elongation at break: 300% according to ASTMD638
  • Elongation after heat aging test: 200% (168 hours at 150°C)
  • Thermal shock: no damage (4 hours at 250°C)
  • Water absorption: ≤ 0.15% according to ASTMD570
  • Fluid resistance: good
  • Mold Resistance: Good
  • Volume resistivity: 1014 ohm.cm according to ASTMD257
  • Copper corrosion: None
  • Fluid resistance: according to ISO1817, ISO37 MIL-1-23053
  • Dielectric strength: 20 kV/mm
  • Longitudinal variation: ≤ +1% -10% maximum
  • Specific gravity: 1.45 g/cm³

Heat shrink indication

  1. When shrinking the heat shrinking sleeve, use equipment made for this specific operation such as, for example, guns or hot air tunnels.
  2. Shrink the sheath starting at one end, the most critical part, and then proceed slowly to the opposite end. This method avoids the formation of air bubbles between the inner wall of the heat shrink sleeve and the object it covers.
  3. In the event that the object to be covered is made of metal or a good heat conductor, it is advisable to preheat the object to avoid “cold areas”, so as to allow a perfect and soft adaptation of the heat-shrinking sleeve.
  4. In order to avoid overheating of the heat shrink sleeve, ensure there is regular heat distribution. Excessive overheating of the material during the shrinking process can cause bubbles, discoloration and in some cases even breakage of the heat-shrinking sleeve.

Delivery Terms

The expected times for order fulfillment are indicated in our Order Confirmation. In urgent cases, by contacting our sales office at the phone number 0373/920659, the shipment of goods can be managed within 24 hours from the date of our order confirmation. For all products not managed in stock, the shipment of goods will be carried out according to the agreements with our sales office.

Delivery

The delivery of goods is ex our warehouse. At the customer's request, our company offers a "Free Domicile with Invoice Charge" service using a shipper contracted with us. For more information regarding delivery, please consult our General Supply Conditions.

Warranty

RTE warrants, during the warranty period, to repair or replace free of charge those parts that, due to poor material quality or workmanship defects, prove to be defective, but only if they have been used in accordance with the provisions in the "Instruction, Use, and Maintenance Manuals", excluding any other damage and liability for direct or indirect damages resulting from improper use.

For more information regarding delivery terms, delivery, and warranty, please consult our General Supply Conditions.

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thermal shrinking sheaths

Frequently Asked Questions

What are the regulations and certifications that an insulating sheath must comply with in order to be used in the railway and/or rail transport sector?
Insulating sheaths, whether they be heat-shrinkable, silicone, braided in polyamide, Wrap Around or fibreglass coated with silicone must comply with EN45545 in order to be used in the railway sector. It is necessary to define the classification level HL1 – HL2 – HL3, together with the risk level, R22 – R23 in order to identify the suitable sheath for each type of use.
What are the differences between the various classification levels, HL1-HL2-HL3 and between the risk levels R22 – R23?
The classification level HL1-HL2-HL3, together with the risk level R22 – R23 define in which area the chosen sheath can be used. Needless to say, a sheath with a maximum classification level, HL3, can be used for all uses where lower classifications such as HL1 – HL2 are required.
CLASSIFICATION LEVEL HL1 – HL2 – HL3
HL1 à A sheath that can be used for surface trains that do not go through tunnels, for example a city tram;

HL2 à A sheath that can be used for surface trains that go through tunnels, for example a normal freight/passenger train and all high-speed trains;


HL3 à A sheath that can be used for trains that run mainly on underground railways, i.e. Subway/Metro;
RISK CLASS R22 – R23
All items that are not found within other lists, (such as, for example, doors, seats, cables, brakes, mattresses etc.) and that have an exposed surface less than or equal to 0.20 m2 belong to the 2 R22 – R23 risk classes. For the sake of convention, heat shrink sheaths are considered to be within these 2 groups.

R23 à The sheath can be used outside the wagon

R22 à The sheath can be used inside the wagon

A sheath with a maximum risk class, R22, can be used for all uses where lower risk classes such as R23 are required.

As a result, since the specifications requiring an R22 risk class are stricter than those requiring an R23 risk class, it follows that if the sheath has an HL3 classification level and an R22 risk class, the sheath in question can be used both outside and inside the wagon.
What are the applications for which sheaths are used that comply with the EN45545 railway sector standard?
Insulating sheaths, compliant with the EN45545 standard for the railway sector, are usually used inside:
Ø WCML + SBB electrical panels
Ø RAILWAY CARRIAGES body interior
What are the main features of sheaths that comply with EN45545?
Ø Operating temperature: -40°C ÷ +150°C
Ø Self-extinguishing: According to UL94-V0 standards
Ø Fire behaviour and determination of fumes and gases; HL3 according to requirement R22-R23 of railway standard EN45545
What are the delivery times for sheaths that comply with the EN45545 standard for the railway sector?
Sheaths compliant with EN45545 are available for immediate delivery
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