Product Overview
Our inflatable seal are specially designed for powder and bulk material handling systems, providing reliable pneumatic sealing for industrial conveying, dosing, silo discharging, pneumatic conveying and bulk loading equipment. Traditional fixed rubber gaskets easily cause powder leakage, dust emission, material waste and frequent wear during continuous bulk operation. Our inflatable sealing solution effectively solves these industry pain points by adopting expandable pneumatic sealing structure, achieving zero-gap sealing during working and retracting automatically when idle.
Widely applied in bulk powder machinery including silo outlets, rotary valve joints, bulk tanker loading hatches, conveying pipeline interfaces and dust isolation doors. With excellent powder tightness, flexible expansion performance and long-cycle durability, these seals ensure clean, safe and efficient bulk material processing.
Working Principle
The silicone inflatable seal remains contracted in standby status, avoiding friction and extrusion during equipment opening, closing and material conveying. When the system starts operation, low-pressure compressed air inflates the seal to expand evenly, tightly filling irregular assembly gaps and forming a complete airtight barrier. This fully blocks fine powder leakage, dust overflow and material escape. After operation, air pressure is released and the seal retracts to its original shape, greatly reducing wear and extending service life compared with static seals.
Material Options & Features
We provide fabric reinforced EPDM ，silicone and other industrial-grade rubber materials optimized for powder bulk handling conditions:
- Fabric Reinforced EPDM: High tensile strength, anti-tear and anti-fatigue performance. Effectively prevents over-expansion and deformation under repeated inflation and deflation. Excellent dust tightness, abrasion resistance and weather resistance, ideal for long-term powder conveying and bulk processing scenarios.
- Custom Rubber Formula: Optional food-grade and wear-resistant grades for food powder, chemical powder and mineral bulk material applications.
Core Advantages
- Perfect Powder Tight Sealing: Effectively blocks fine powder leakage and dust pollution, improving workshop environment and reducing material waste.
- Long Service Life: Reinforced structure supports thousands of inflation cycles, stable performance under continuous bulk production.
- No Interference with Operation: Automatic retraction avoids friction damage during equipment movement and material conveying.
- Custom Sizes & Structures: Support circular, rectangular, spliced and integral molded profiles, customized according to on-site gap size and installation space.
- Stable Low-Pressure Operation: Works reliably under 0.1–0.2 MPa working pressure, easy to install and control.
Application Scope
Suitable for all kinds of powder and bulk handling equipment:
- Bulk powder silo discharging ports
- Pneumatic conveying system interfaces
- Bulk truck loading and unloading hatches
- Rotary feeder and valve connection seals
- Chemical, food, mineral and cement powder processing equipment
Technical Specifications
- Working Pressure: 0.1–0.2 MPa
- Working Temperature: -60°C to 300°C
- Structure: Fabric reinforced / customized spliced type
- Length & Dimension: Fully customizable based on customer drawings
- Sealing Performance: Zero powder leakage, high airtight stability
Manufacturing & Service
We specialize in custom inflatable gasket with integral molding and precise splicing technology. All products are strictly inspected for air tightness, expansion consistency and fatigue resistance. We provide one-stop customization service including drawing confirmation, structural optimization, sample trial production and mass delivery, offering stable and cost-effective sealing solutions for global bulk powder handling industries.
