Seals built for every demand
High-Reliability
Chengdu Novesel Technology Co., Ltd. is a technology-driven enterprise specializing in the research, design, manufacturing, and sales of mechanical seals. The company produces a wide range of products, including mechanical seals for pumps, reactors, and agitators, metal bellows seals, carbon floating ring seals, dry gas seals, and precision mechanical components.
For Your Demand
15 Years Of Undefeated Success
We deliver the right solution for every unique need. Our broad portfolio includes time-tested production models and individually engineered custom solutions. Connect with us to learn more.
279+
Successfully Project Finished.
15+
Years of experience with proud
+$421 Million
Revenue in 2025
58+
Team members
For Your Project
Our Products
Dry Gas Seal
A dry gas seal is a non-contact seal that uses spiral grooves to generate a micron-level gas film, achieving dynamic balance and enabling reliable operation in high-speed, high-pressure equipment.
Carbon Floating Ring Seal
Carbon floating ring seals are supplied as maintenance free compact labyrinth cartridge seals with low leakage.The seal requires no additional lubrication, and it is designed for dry running.
Cartridge Mechanical Seal
Cartridge mechanical seals are pre-assembled units designed for easy installation, reducing setup errors and ensuring reliable sealing performance in rotating equipment.
Component Mechanical Seal
Component seals are individual sealing elements installed separately, offering flexibility, easy maintenance, and reliable performance in various industrial pumps and rotating equipment.
API Piping Plan
API piping plans define standardized seal support systems, controlling flush, cooling, and pressure to ensure reliable mechanical seal performance in rotating equipment.
Accessories
Seal accessories include seal rings, O-rings, and sleeves, ensuring proper sealing performance, equipment protection, and extended service life in rotating machinery.
Sustainability
Committed to Keep Operations Reliable & Safe
Working together to deliver reliable sealing solutions supporting efficiency, safety, and a sustainable net zero future.
We Follow Best Practices
Sealing Expertise for Rotating Equipment.
High Performance. Low Emissions.
- Reliable performance
- Delivery On Time
- Modern Technology
- Latest Designs
High Reliability
Secure your operations with reliable sealing solutions.
NOVSEAL ensure reliability through precision manufacturing, strict quality control, advanced testing, and expert engineering, delivering consistent performance and extended service life in demanding industrial applications.
Quality
We are focused on the quality of ourpeople, our products, and our processes.Therefore we demonstrate excellence in everything we do
Trust
Our company culture is based on trust in each other, built on honest and transparent communication, consistent processes, and fair collaboration
Responsibility
We acknowledge our responsibility for results and resources, and for our decisions. Our commitment exceeds the expectations of our customers and colleagues
About Us
We are a leading professional manufacturer of mechanical seals and dry gas seals in China.
Workshop Overview
Our Equipment
Milling & Vise Area
Test Rig For Dry Gas Seal
Test Rig For Mechanical Seal
Laser Grooving Equipment
Dynamic Balancer
Coordinate Measuring Machine
What Our Clients Say
Testimonials
SINOPEC
The mechanical seals we purchased have been running smoothly with excellent sealing performance and long service life. Highly reliable supplier!
SYCC
Professional team, stable products, and thoughtful after-sales service. We will continue to cooperate for our long-term projects.
ANSTEEL
Great quality and fast delivery. Their dry gas seal fit our equipment perfectly and greatly reduced our maintenance frequency. Very satisfied!
CHINA HUANENG
These mechanical seals work exceptionally well under high pressure and harsh conditions. Exactly what we needed for our applications.
Request a Quote
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Learn More From
Frequently Asked Questions
1.Give us your DGS requirements, with either the assembly drawing of your original seal, or the sealing chamber drawing with installation dimensions, along with operating conditions such as medium, shaft speed, operating temperature, and operating pressure.
2.We will quote based on your inquiry and issue the invoice for the project.
3.Start the design work and submit to clients for approval or possible design dimension tweaks.
4.Start the production.
5.All parts inspected with dimension check and rotary parts dynamically balanced.
6.Static and running tests.
7.Packing and delivery
1.To lubricate and cool mechanical seals.
2.To remove foreign particles.
3.To remove carbon deposition and engrossed materials on mating surfaces.
4.Prevent seal from dry running.
5.To maintain the operational parameters of mechanical seals.
There are 3 essential requirements:
1.Seal faces must be flat and polished.
2.Seal faces must be installed perpendicular to the shaft.
3.Spring force must be sufficient to maintain contact of the faces