Looking for a reliable and cost-effective solution for cable duct sealing? Our Inflatable Duct Sealing System (IDSS series) is engineered for quick installation, durable sealing, and superior performance in both fiber optic and electrical cable duct applications. As the original manufacturer, we offer factory-direct pricing and full customization options to match your specific project needs.
Whether you’re managing a telecom network, data center infrastructure, or power utility installation, our inflatable duct seals provide the ideal solution for sealing ducts against water, gas, dust, and rodents—all while maintaining the integrity of your cables and ensuring long-term system reliability.
What is an Inflatable Duct Sealing System?
An Inflatable Duct Sealing System is a flexible, air-inflated sealing solution designed to fit snugly inside duct openings to block contaminants and prevent airflow. Once inserted into the duct, the system is inflated using an integrated air valve or tubing line, creating a tight seal around your cables without the use of foam, resin, or permanent fillers.
Compared to traditional duct sealing methods, inflatable systems offer:
- Faster installation
- Reusable design
- Less mess and waste
- Better compatibility with evolving network layouts
Available Models & Sizes of Our Inflatable Duct Sealing System
Our IDSS series includes a wide range of sizes suitable for ducts with diameters from 40mm to 300mm. Each model is compatible with 1 to 4 cables of varying diameters. For special applications, we offer custom manufacturing with fast lead times.
Model | Duct OD (mm) | Product Dimensions (mm) | Cable Diameter Range (mm) |
---|---|---|---|
IDSS-40 | 40 | 120 × 126 | 7.5 – 23 |
IDSS-50 | 50 | 120 × 180 | 7.5 – 45.5 |
IDSS-63 | 63 | 120 × 230 | 7.5 – 46.5 |
IDSS-75 | 75 | 120 × 280 | 8 – 48.5 |
IDSS-90 | 90 | 120 × 330 | 10.5 – 64 |
IDSS-110 | 110 | 120 × 400 | 12.9 – 84.9 |
IDSS-125 | 125 | 120 × 450 | 35 – 100 |
IDSS-160 | 160 | 140 × 560 | 40 – 129 |
IDSS-180 | 180 | 140 × 650 | 48 – 154 |
IDSS-200 | 200 | 140 × 700 | 56 – 178 |
IDSS-250 | 250 | 160 × 900 | 70 – 200 |
IDSS-300 | 300 | 180 × 1040 | 95 – 240 |
Need a custom size? We manufacture according to your cable and duct specifications with low MOQ and fast delivery.
Key Features & Benefits of Our Inflatable Duct Sealing System
- Waterproof & Airtight Sealing: Blocks out water, gas, dust, and rodents from entering the duct.
- Fast, Tool-Free Installation: Just insert, inflate, and seal—no curing, foam, or adhesives required.
- Non-Destructive & Reusable: Can be removed and reused when rerouting or upgrading cables.
- Wide Compatibility: Suitable for both fiber optic cable duct sealing and electrical cable duct sealing applications.
- Customizable Sizes & Designs: We manufacture based on your specific duct and cable combinations.
Applications of Inflatable Duct Sealing System

The IDSS Inflatable Duct Sealing System is widely used in the following sectors:
- FTTH (Fiber to the Home) deployments
- Outdoor telecom networks
- Data center cable management
- Electrical substation infrastructure
- Underground and conduit installations
- Industrial facilities and utility tunnels
Valve Types & Inflation Methods
Our inflatable duct seals are available in:
- Air valve models – Inflate using a standard air pump or pressure bladder.
- Slim tubing type models – Designed for tight spaces with narrow access points.
Each unit is engineered for durability and long-term sealing performance, even in challenging environmental conditions.
Why Choose Us?

We are the original factory behind the IDSS inflatable duct seal systems. By choosing us, you benefit from:
- Wholesale pricing with no middlemen
- OEM & ODM services available
- Fast production & global shipping
- Decades of manufacturing experience in cable sealing
- Flexible order volumes and excellent customer support
Request a Free Quote and Free Sample
We offer free samples for evaluation and are happy to provide technical guidance for your cable duct sealing projects. Contact us today to request a quote or send your duct and cable specifications for a custom solution.