Sealing Conveyor Belt
Our sealing (cover sealing) conveyor belt acts as a flexible protective cover over bulk conveyors against dust, rain, snow, wind and sunlight.
Reinforced by nylon fabric or steel cord, it combines firm transverse rigidity and longitudinal flexibility. Suitable for tripper cars and continuous handling equipment, it is widely used in ports, building material, chemical and grain plants to avoid weather impact and material dust pollution.
Reinforced by nylon fabric or steel cord, it combines firm transverse rigidity and longitudinal flexibility. Suitable for tripper cars and continuous handling equipment, it is widely used in ports, building material, chemical and grain plants to avoid weather impact and material dust pollution.
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Description
Product Overview
Our sealing conveyor belt, also known as cover sealing belt, sits right above bulk material conveyor systems. It works as a flexible protective cover to block dust, rain, snow, wind and strong sunlight during material transportation.
The belt’s inner reinforcement layer is built with nylon fabric or steel cord layers. This build gives it two practical advantages: solid transverse rigidity to hold shape, and good longitudinal flexibility for free bending and movement. It fits well for tripper cars, material recovery units, automatic unloading conveyors and other continuous material handling machinery.
Widely deployed across ports, building material plants, chemical workshops and grain processing facilities, this sealing cover belt shields loose bulk goods from outdoor weather interference. Meanwhile, it stops scattered materials from blowing out and polluting the surrounding site.
Why Choose Our Sealing Conveyor Belt Over Traditional Cover Solutions
Many sites use tarpaulin cloth or fixed metal hoods for conveyor shielding. Each option has obvious pros and cons:
- Tarpaulin cloth: Low cost, but easy to tear, poor shape holding, cannot stand strong wind; frequent replacement increases total cost.
- Fixed metal hood: Good weather resistance, but heavy, cannot move. It blocks access when you need to inspect or maintain the lower conveyor.
- Our movable sealing conveyor belt: Balanced solution. Rigid sideways yet flexible lengthwise. It can move together with tripper unloading equipment. No need to remove whole hood for routine conveyor inspection.
Main Applications
Installed on top of bulk material conveying belts, the sealing cover belt is matched for material unloading conveyors and continuous production equipment.
- Grain industry: Protect grain stocks from rain, dust and sun exposure during transit
- Chemical sector: Keep bulk chemical materials free from external contamination
- Building material field: Cover cement, sand and other bulk building materials
- Port logistics: Fit for outdoor port unloading and material transfer equipment
Thanks to its reinforced structure, the belt holds shape sideways while staying soft lengthwise. Operators can shift or reposition the cover belt according to actual working requirements.
Key Features
- Reliable weather protection: Shields transported materials against dust, wind, rain and direct sunlight to preserve material quality.
- Even embedded transverse reinforcement: Reinforcement layers sit evenly embedded inside the belt. This stops early on excessive wear that could expose the inner layers.
- Flexible running performance: The belt body bends smoothly, compatible with smaller size drive rollers. No need to install extra large roller sets for operation.
- Dual sided benefit: Stabilizes material quality by isolating harsh outdoor conditions; cuts material loss and reduces site dust pollution.
- Easy on site adaption: Transverse rigidity maintains covering shape; longitudinal softness supports movable installation for different working cycles.
| Belt Width | 600 | 800 | 1000 | 1200 | 1400 | 1600 | 1800 | 2000 |
| Max. Support Spacing (mm) | 400–500 | 650–700 | 800 | 1000 | 1200 | 1400 | 1600 | 1800 |
| Embedded Metal Layer | Steel Mesh | |||||||
| Cover Rubber Material | Black, Anti-Aging Rubber (all widths) | |||||||
| Min. Pulley Diameter (mm) | 300 | 300 | 300 | 400 | 400 | 400 | 400 | 500 |
Material Options
We supply two main reinforcement constructions for sealing conveyor belts to match different site demands.
- Nylon fabric reinforcement: Light weight, good flex resistance. Perfect for general duty applications such as grain, regular building material and light load port conveying. Lower overall cost for long run projects.
- Steel cord layer reinforcement: Delivers higher transverse stiffness. Choose this option if your cover belt faces frequent large range movement, heavy wind load or tough outdoor working sites. Suitable for heavy duty tripper car and large unloading machinery.
The outer rubber cover compound can be adjusted upon request. We offer standard weather resistant grade for most outdoor environments. Special anti aging formula is available for sites under long term strong sunlight exposure.
FAQ
Q1: What is the difference between sealing conveyor cover belt and regular conveyor belt?
A: Ordinary conveyor belts carry materials from below. Our sealing cover belt acts as a top cover above the main conveyor. It does not bear material weight; its core job is weather and contamination shielding.
Q2: Can this sealing belt work with small drive rollers?
A: Yes. Long direction softness allows operation with relatively small drive rollers. It helps you avoid modifying your existing roller setup in most cases.
Q3: Will the inner reinforcement layer wear through quickly?
A: Transverse reinforcing layers are fully and evenly buried inside belt structure, not close to the surface. Under normal working conditions, over wear and early exposure rarely happen.
Q4: Which working scenarios are not suitable for this sealing belt?
A: It fits for general outdoor bulk material conveying. It is NOT recommended for scenarios with sharp high temperature chunks or strong corrosive liquid splashing directly onto the belt surface.
Q5: Is the sealing cover belt movable?
A: Sure. With soft longitudinal performance, the belt can be moved as needed. It is commonly used for tripper car and automatic unloading equipment that requires adjustable coverage.
Quick Note for Buyers
When ordering, please share your working conditions: operating environment, roller diameter, required belt width and length, and whether you need nylon fabric or steel cord reinforcement. These details help match the most suitable sealing conveyor belt solution for your site.
Products
Sidewall Conveyor Belt
QBF rubber specializes in designing and manufacturing high-quality steep incline conveyor belts for bulk material lifting across industries such as harbors, metallurgy, tunneling, power plants, chemicals, cement, and metro. As the only Chinese manufacturer using full European molds and standards, QBF rubber provides complete solutions covering belt selection, production, installation, commissioning, and trouble shooting.
Pocket Type Conveyor Belt
Developed from high angle sidewall belts and high capacity bucket elevators, the Pocket Type Conveyor Belt (Pocketlift) suits underground mining, tunnels, port handling and large volume silo feeding, with lifting heights up to 800 meters.
It handles ultra high lift, high throughput tasks beyond conventional high angle sidewall belts, realizing stable continuous bulk material transportation.
It handles ultra high lift, high throughput tasks beyond conventional high angle sidewall belts, realizing stable continuous bulk material transportation.
Rope-track Sidewall Conveyor Belt
RopeTrack corrugated sidewall steel cord conveyor belt for overhead cable conveying. ST10000 high strength, 25000 t/h throughput for mine, quarry & complex terrain long distance bulk transport. Custom engineering available.
Bucket Elevator Conveyor Belt
Bucket elevator conveyor belts are cost effective core components for vertical bulk material handling, supporting lifting heights over 100 meters. Reinforced with high grade tear resistant polyester canvas or optional steel cord anti tear layers for heavy duty use.
They deliver low elongation, high throughput and stable operation with easy maintenance, helping operators reduce downtime from belt failures and frequent replacements.
They deliver low elongation, high throughput and stable operation with easy maintenance, helping operators reduce downtime from belt failures and frequent replacements.
Pipe Conveyor Belt
Pipe conveyor belt (tubular conveyor belt) folds into a closed tube in operation, fully containing bulk materials to eliminate spillage and dust emissions while shielding cargo from external contamination.
Supporting sharp horizontal and vertical bends, it meets strict environmental requirements and helps plants remove redundant transfer points, favored by operators troubled by on site dust and leakage issues.
Supporting sharp horizontal and vertical bends, it meets strict environmental requirements and helps plants remove redundant transfer points, favored by operators troubled by on site dust and leakage issues.
Chevron Conveyor Belt
Chevron conveyor belt, fitted with raised chevron cleats, is designed for steep angle conveying to prevent bulk material sliding and fallback, an issue common for smooth flat belts.
Various chevron patterns are available for different slope demands. Widely used in mining, farming, construction and recycling, it maintains stable performance under harsh on site working conditions.
Various chevron patterns are available for different slope demands. Widely used in mining, farming, construction and recycling, it maintains stable performance under harsh on site working conditions.
Recent news
Sidewall Conveyor Belt Sagging Solutions: QBF rubber Free Zone Base Belt Design Extends Service Life by 30%
Sep 18, 2026
According to industry statistics, up to 80% of sidewall conveyor belt failures occur due to rigidity loss–induced sagging during operation. QBF rubberaddresses this root cause with an innovative “free zone ” base belt design, significantly extending the service life of sidewall conveyor belts.
What Is Belt Sagging and Why Does It Shorten Belt Life?
Under heavy load, especially on the return run, the base belt often sags due to insufficient transverse rigidity. This sagging triggers a chain of serious issues:
Stress concentration – Sagging causes abnormal flexing at the sidewall root as it passes over the drum, concentrating stress in a localized area.
Fatigue cracking – Repeated flexing leads to fatigue cracks at the sidewall root, which can develop into through-wall damage.
Baffle detachment – Vibration and deformation from sagging transfer to the baffle connection, accelerating adhesive aging and causing baffle loosening or separation.
Once sidewall tearing or baffle detachment occurs, the entire sidewall conveyor belt often fails prematurely. Therefore, solving the sagging problem is the key to extending belt service life.
Root Cause of Belt Sagging
The core cause of sagging lies in structural deficiencies of traditional base belt designs:
Insufficient transverse rigidity – Traditional base belts cannot maintain a flat profile under heavy loads or long-span conditions.
Unbuffered stress transfer – The sidewall-to-base belt connection lacks a flexible transition, so abnormal sagging stress directly impacts the sidewall root.
Accelerated fatigue accumulation – Repeated flexing at stress concentration points causes cracks to grow from micro to macro levels.
Understanding these causes makes it clear: simply increasing sidewall thickness or changing the rubber compound is a temporary fix. The solution must start with the base belt structure.
Solution: QBF rubber Free Zone Base Belt Design
QBF rubber introduces a “free zone ” base belt design to directly target the root cause of sagging.
How the free zone Works
Blocks stress transfer – The free zone acts as a stress buffer, absorbing and isolating abnormal sagging stress before it reaches the sidewall root.
Dissipates flexing energy – The flexible edge allows the base belt to adaptively deform as it passes over the drum, spreading concentrated flexing over a larger area.
Protects sidewall and baffles – By mitigating the extra load caused by sagging, the risk of fatigue tearing at the sidewall root is greatly reduced, and the baffle adhesive layer no longer suffers excessive vibration stress.
Key Advantages of the free zone Design
Advantage
Result
sidewall tear resistance
Eliminates stress concentration points; fatigue life extended by 2–3 times
Baffle detachment risk
Smoother operation; significantly slower adhesive aging
Overall belt service life
Comprehensive service life increased by 30% or more
QBF rubber’s Free Zone Base Belt design achieves a leap from “reacting to sagging consequences” to “eliminating the root cause of sagging.”
Summary: Eliminate Sagging at the Source for Longer Sidewall Belt Life
The sagging problem in heavy-duty sidewall conveyor belts originates in the base belt structure. QBF rubber’s free zone design solves this industry pain point by blocking stress transfer, dissipating flexing energy, and protecting both sidewall and baffles.
If you are experiencing frequent sagging, sidewall tearing, or baffle detachment with your sidewall conveyor belt, contact QBF rubber for professional technical support and customized solutions.
READ MORE
QBF Rubber Anti-stick Sidewall Belting Helps Shenzhen Tunnel Construction
Sep 18, 2026
The customized S400 B1800 TCS360 anti-stick Sidewall Belt — developed by QBF Rubber for the Shenzhen Tunnel Project — is now under installation! With a total length of 190m, this high-performance non-stick belt is set to play a crucial role in ensuring smooth and efficient tunnel construction.
More Than Just a Product – Full-Service Support!
Our after-sales team is fully committed to providing:
✔ Tailored installation plans
✔ Professional on-site guidance
✔ Hot vulcanization splicing services
✔ Comprehensive commissioning & operation support
Every step is meticulously handled to ensure flawless performance of the sidewall belt!
Technology + Service Facilitate Tunnel Construction
“This cooperation reflects QBF rubber’s R&D strength and service capability in the field of special conveyor belts,” the project manager said, “The application of the anti-stick sidewall conveyor belt will significantly improve the conveying efficiency, reduce the downtime for maintenance, and provide key support for the project to be pushed forward on schedule.”
In the future, QBF rubber will continue to focus on technological innovation and customer needs to provide more efficient and durable conveyor system solutions for global infrastructural projects.
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Mining Vertical Lifting System Solution: Tackling Continuous Conveying Challenges for Deep-Mine Operations
Sep 17, 2026
As mining operations go deeper, vertical lifting efficiency and safety have become major constraints on mine output. Designed for deep shafts, inclined shafts and complex terrain, our vertical lifting system works across 0 500 m vertical heights and supports steep angle, long distance material transport. Thanks to modular design, high throughput and full lifecycle services, it has gained wide attention in the mining material handling industry.
Three Core Solutions for Varied Lifting Applications
Our portfolio includes three main product lines to cover diverse vertical transport demands.
Steep Angle Sidewall Conveyor Solution
Engineered as an alternative to conventional mine cages, this solution handles vertical heights from 0 m to 500 m. In inclined shaft conditions, throughput can exceed 10 000 tons per hour. It overcomes the low efficiency, intermittent nature of cage hoisting and enables fast, continuous material transfer from underground to surface.
Pocket Type Vertical Lifting System
Optimized for high height, high volume tasks, this system is ideal for muck removal shaft main lines and blind shaft intermediate transfer. Proven in tunneling projects, it runs stably above 250 m lift height with capacities over 800 m³/h. It fills performance gaps under tight space conditions and can reach lifting heights over 500 m.
Long Distance Rope track Conveying System
Boasting single spans beyond 2 000 m, this system serves mountain and river valley sites. It reduces transfer points, cuts energy consumption and lowers overall maintenance costs for difficult terrain material haulage.
Full Chain “EPC+M+O” Service Model
Beyond equipment supply, Bairui provides a complete EPC+M+O service package:
E (Evaluation & Custom Design): Custom engineer conveyors and belts based on mine geology, production targets and existing site infrastructure.
P (Core Equipment Manufacturing): In house production of sidewall belts, lifting pockets and drive units for reliable quality and on time delivery.
C (Installation Guidance): On site technical support for installation and commissioning to ensure smooth startup.
M (Operation Management): Partial or full operational outsourcing to help mines hit production targets quickly.
O (Smart O&M): Condition monitoring and predictive maintenance platform for early fault warnings and optimized maintenance schedules.
Key Benefits vs Traditional Lifting Equipment
For shafts deeper than 500 m, traditional multi rope friction hoists suffer from short rope life, batch type loading and complex controls. The Steep Angle Sidewall Conveyor Solution fits compactly within limited shaft space. Its continuous output connects directly to processing plants or silos, eliminating intermediate stockpiles and re handling expenses.
In tunnel construction, the Pocket Type Vertical Lifting System features small turning radii and steep climbing performance. It has replaced imported equipment on multiple inclined shaft tunnel projects, delivering local manufactured cost savings. It requires minimal maintenance space and tolerates heavy dust and poor water conditions.
Field Proven Project Experience
Our solutions are operational across global metal mines, coal mines and large tunneling infrastructure. China’s first 255 m mine used vertical lifting system is now in service, boosting vertical conveying efficiency by over 10× with safe, energy saving and eco friendly operation.
September Global Exhibition Roadshow
This September, Bairuifu will attend four key mining expos across Central Asia, Africa and China to showcase our full vertical lifting portfolio and EPC+M+O service model. Industry professionals are welcome to visit our booths for technical exchanges.
Exhibition Schedule
Mining World Central Asia 2026
Sep 16 18, 2026｜Atakent International Exhibition Centre, Almaty | Booth: 11 307
Electra Mining Africa 2026
Sep 7 11, 2026｜Johannesburg Expo Centre | Booth: P10
The 28th China Mining Conference and Exhibitlon
Sep 10 12, 2026｜Meijiang Convention and Exhibition Center, Tianjin | Booth: N2 2607
The 20th Yulin International Coal and High-end Energy Chemical Industry Expo
Sep 13 15, 2026｜Yulin Convention & Exhibition Center| Booth: H342 / H335
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