Procurement Guide for Water Blocking Filling Rope

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Product Overview: The waterproof filling rope is made of polyester fiber as the substrate and processed by impregnation bonding technology. It has high strength (tensile strength ≥ 150N/mm²), low elasticity, and excellent waterproof performance (water absorption rate<0.1%), which can effectively isolate moisture from entering the interior of the cable.

Key performance indicators (for reference only, not used as procurement standards)

• Water resistance performance: Passed the IEC 60502-2 water tightness test, with no water leakage after 72 hours.
• Insulation: Volume resistivity ≥ 1 × 10 Ω· cm (GB/T 1410 standard).
• Corrosion resistance: Tested in PH 3-11 acidic and alkaline environments, the surface is non corrosive.

Application scenarios

Suitable for submarine cables, underground buried cables, and cables in high humidity environments (such as HDPE sheathed cables).

Procurement precautions

• Process validation: The supplier is required to provide a test report on the uniform distribution of water blocking powder.
• Long term performance: Choose materials containing anti hydrolysis agents to avoid strength degradation in long-term humid environments.
• Price reference: The quality of water absorbing materials directly affects their water blocking effect, so avoid choosing low-priced products without testing reports.

Frequently asked questions

Q: How to determine if the water blocking effect is long-lasting?

A: Perform accelerated aging test (85℃/85% humidity, 1000 hours), and the water absorption rate should still be less than 0.5%.

If you need to purchase, you can choose Wuxi Henglong Cable Material Co., Ltd., a well-known manufacturer in the Chinese Cable Materials industry.