


PVC Tapes And Films
PVC Self-Adhesive Tape
This self-adhesive range covers two rubber builds for cable joint work. The high-voltage waterproof SA series is 0.8 mm thick in 19 mm 23 mm and 50 mm widths rated 10 KV for terminals and joints. The EPR build SA-23 is 0.8 mm by 25 mm by 5 m rated 69 KV for primary insulation restoration on solid dielectric cables.
ISO 9001:2015 production Samples available Small orders accepted
Product Overview
This self-adhesive range covers two rubber builds for cable joint work. The high-voltage waterproof SA series is 0.8 mm thick in 19 mm 23 mm and 50 mm widths rated 10 KV for terminals and joints. The EPR build SA-23 is 0.8 mm by 25 mm by 5 m rated 69 KV for primary insulation restoration on solid dielectric cables.
Materials
- High-voltage rubber compound
- EPR ethylene propylene rubber polymer
Key Benefits
- Self-amalgamating rubber fuses into one insulation layer that does not fall off
- SA series rated 10 KV and EPR SA-23 rated 69 KV, covering distribution and higher voltage joints
- Breakdown strength of at least 20 KV/mm on both builds
- 30 month shelf life, so stock held for outage seasons stays usable
- Elongation at break of at least 800 percent on the EPR build for wrapping stress cones
Application Scenarios And Who It Is For
Application Scenarios
- Insulation waterproofing and sealing for 10 KV and below cable terminals and joints
- Main insulation restoration on 600 to 69000 V solid dielectric cables
- Primary insulation restoration with stress cones on solid dielectric cables up to 35000 V
- Sealing joints that operate at up to 90 degrees C
Who It Is For
- Utility jointers working on distribution and HV cable
- Industrial electrical maintenance teams rebuilding damaged joints
- Cable accessory distributors stocking jointing consumables
- EPC contractors assembling field jointing kits
Problems It Solves
- Taped joints that unwind or track because the layers never fused
- Kits that cover only one voltage class, forcing several part numbers on the van
- Insulation rebuild work where heat-shrink cannot be used near live or confined plant
- Consumables that expire before the next outage window
Technical Features
- SA series: thickness 0.8 mm, tensile at least 1.3 Mpa, elongation at break at least 400 percent, breakdown strength at least 20 KV/mm, volume resistivity at least 1x10^14 at 20 degrees C, dielectric constant 5.0 or less, no loosening after 24 h self-adhesion test
- EPR SA-23: thickness 0.8 mm, tensile at least 1.0 Mpa, elongation at break at least 800 percent, breakdown strength at least 20 KV/mm, dielectric loss tangent 0.05 or less
- Operating temperature range 90 degrees C or below
Specifications
Values below are taken from our published product data. Our tables note that figures are general averages for reference and that actual data should be confirmed by testing within the applicable scope.
| SA10 | 0.8 mm x 19 mm x 4.5 Y, outer diameter 82 mm, 10 KV |
|---|---|
| SA20 | 0.8 mm x 23 mm x 5 Y, outer diameter 85 mm, 10 KV |
| SA20S | 0.8 mm x 50 mm x 5 m, outer diameter 85 mm, 10 KV |
| SA-23 EPR | 0.8 mm x 25 mm x 5 m, outer diameter 85 mm, 69 KV |
| Breakdown Strength | at least 20 KV/mm |
| Volume Resistivity | at least 1x10^14 at 20 degrees C |
| Dielectric Constant | 5.0 or less |
| Operating Temperature Range | 90 degrees C or below |
| Shelf Life | 30 months from production date |
Quality Control
- Breakdown strength and volume resistivity tested at 20 degrees C
- 24 hour self-adhesion check for loosening
- Tensile and elongation tested longitudinally on both builds
- Thickness held at 0.8 mm across all widths
Customization Options
- Width and roll length combinations for your jointing kits
- Kit packing together with the waterproof composite tape and PVC outer tape
- Labelling to your own kit part numbers
Comparison With Other Products
| Compared With | Why This Product |
|---|---|
| Heat-shrink joint kits | No flame or heat gun, which matters in confined substations and near flammable plant |
| Waterproof Insulating Composite Tape | The SA rubber builds are for insulation rebuild and stress cones, the composite tape carries the 35 KV sealing rating |
Use Guide
- Remove the release film and stretch the tape by 200 percent before wrapping
- Wrap in a half-overlap pattern around the area needing insulation or waterproofing
- On the EPR build keep folding and wrapping until the required thickness is reached; in critical areas stretch to the point of rupture, which does not change its physical or electrical characteristics
- Add an outer protective layer of PVC adhesive tape for durability
- Store in a cool dry place
Questions Buyers Ask
PVC Self-Adhesive Tape FAQ
Which build do I need for a 35 KV joint
The EPR build SA-23 is listed for primary insulation restoration with stress cones on solid dielectric cables up to 35000 V and is rated 69 KV pressure resistance.
How far should the tape be stretched
Stretch by about 200 percent before wrapping. In critical areas the EPR build can be stretched to the point of rupture without changing its physical or electrical characteristics.
What is the maximum operating temperature
The published operating range is 90 degrees C or below.
How long can it be stored
Shelf life is 30 months from the production date under room-temperature indoor storage.
Do I need an outer layer over it
Yes, an outer protective layer of PVC adhesive tape is recommended for mechanical durability.
Can you pack these into our own joint kits
Yes. Send your kit contents and part numbers on WhatsApp and we will quote kit packing.
Ask About PVC Self-Adhesive Tape
Send the model, quantity and destination port and we will reply with a quotation, packing detail and lead time.



