Who We Are

ABOUT DERUI SEALS

Since its founding in 2009, Derui has built a reputation as a trusted and reliable manufacturer of high-performance Dry Gas Seals and Mechanical Seals and Seal Support Systems.We specialize in the design,manufacturing, supply and exporting of a complete range of high-quality Dry Gas Seals,Mechanical Seals and Seal Support Systems to meet the growing demands of global industries.Through our commitment to quality, precision, and innovation have established ourselves as a leading provider of custom-engineered sealing solutions for diverse industrial applications.

“Derui Seals” is well-reputed and trusted name among Dry Gas Seal and Mechanical Seals and Seal Support Systems manufacturers in China.Starting as a Chengdu-based manufacturer of Dry Gas Seals and mechanical seals and Seal Support Systems , we have grown into a leading nationwide and global provider of these sealing solutions.

As a leading supplier of high-quality Dry Gas seals, Mechanical Seals, and Seal Support Systems, our company operates an 12,000 square meter production facility with 15 production lines and over 80 full-time employees – including 8 senior engineers and 12 technicians. Supported by a strong R&D team and advanced production,inspection equipment, we maintain a strict quality control system to ensure product reliability and safety. All our seals comply with international standards including ISO, ANSI, DIN, and API.

Derui’s Dry Gas Seal and Mechanical Seals and Seal Support Systems have been widely used in various types of equipment,including Agitators, Reactor Vessels, Mixers, Compressors, Blowers, Blenders , Steam Turbines and other rotating machinery . As a leading manufacturers and exporter of sealing devices, we compete with other OEM brand such as Leak-Proof, HiFab, John Crane, Sealol, Burgmann, Dura Metallic, AES Seals, Chesterton, Flex-a-seal. Flowseve, etc.

Whether you need standard dry gas seals, mechanical seals, or custom-designed solutions tailored to your unique requirements, Derui engineering is your trusted global partner for sealing excellence. We prioritize your specific demands and deliver industry-leading products engineered for long-lasting, high-efficiency performance.

Beyond manufacturing seals, we offer comprehensive repair and maintenance services. Our expert team exclusively uses high-quality components to guarantee the longevity and reliability of every seal. We are dedicated to supporting our clients throughout the entire lifecycle of their mechanical seals—maximizing service life and optimizing operational performance.

At Derui, we provide various high-standard products with excellent value. Not only do we supply high-standard products, but we also offer top- quality design, manufacturing, technical, and training services across a wide variety of industries,including, chemical, petrochemical, pharmaceutical, food and beverage, and more.

Derui is a trusted partner that meets each customer’s unique needs,helping them enhance equipment and processes reliable while improving cost efficiency for a sustainable future.

We highly appreciate your inquiries and guarantee prompt responses.

Company Overview

Factory Established Year: 2009.
Our product: over 2400 types of dry gas seals and mechanical seals designed and manufactured.
Our Certification: ISO9001:2015, ISO14001, OHSAS18001 and API Certificated.
Main Products: Dry gas seal and mechanical seal for Agitator, Pump, Compressor,Blower, Mixer,Centrifuge,Bearing Protector, Seals Support System etc.

Clients of

26

are using
our dry gas seals and mechanical seals.

Here's why

Dry Gas Seals

Dry gas seal (DGS), as a typical kind of noncontacting mechanical seal, meets satisfactorily the requirements of low leakage rate, wear-free operation, and low power consumption for industrial compressors, pumps, fans and other turbo-machines .

Mechanical Seals

Mechanical seals are indispensable for sealing rotating shafts. DERUI mechanical seals includes standard cartridge, pusher, metal bellow, mixer, compressor, slurry, etc.

Carbon Floating Ring Seals

Carbon floating ring seals are used, if the application has a circumferential speed above 40 m/s, normally for turbine and compressor applications.It offers exceptional maintainability.

Single Seals

Single seal is a type of mechanical seal which consists of one primary seal and it seals from process to atmosphere.There is always some leakage either to atmosphere or into process depending on the process pressure.

Dual Seals

Dual (or double) mechanical seals are designed to ensure maximum sealing safety. These seals virtually eliminate leakage of the fluid or gas being handled in pumps or mixers.

Tandem Seals

DERUI’s DG82 series(tandem design) designed for centrifugal compressor. DG820, DG821,DG822 are optimized for low-pressure compressor applications. DG823 for high-pressure compressor applications.

Seal Support System

Seal support system providing lubrication, controlling pressure and temperature, flushing contaminants, and containing leaks, seal support systems ensure reliable, long-lasting seal performance across a wide range of industrial applications.