01
20 years of professional experience
With 20 years of deep expertise in the sealing industry, we are well-versed in the application requirements across sectors ranging from petrochemicals and food to semiconductors.
BUILT-IN SPRING SEAL
Is it leaking constantly under high pressure and high temperature?
The built-in spring allows the lip opening toStay Close
The built-in spring applies a constant and uniform preload to the sealing lip, maintaining stable sealing pressure even under harsh conditions and extending the seal's service life.
Sealing LipsBuilt-in springAnti-extrusion ringO-ring (outer)Quotes provided within 24 hoursRush Order: Delivery in 2–3 Days
CHALLENGES FACED
Are you also facing these sealing challenges?
Do pressure and temperature differentials cause seals to fail, leading to leaks and unplanned downtime?
Do loose seals accelerate equipment wear and tear and shorten the machine's service life?
Are frequent replacements and repairs labor-intensive, and is spare parts inventory becoming a burden?
WHY CHENGSHIN
Let Bearing Seal enhance your sealing solution!
In high-temperature, high-pressure, and corrosive processes, seals can easily lose their elasticity due to material fatigue or pressure fluctuations. Chengxin’s built-in spring-loaded sealing elements ensure that the sealing lip maintains a tight seal under these operating conditions.
WHY CHENGSHIN
6 Major Advantages of Chengxin's Built-in Spring Seals
From experience and quality control to delivery and support—all handled through a single point of contact.
02
International Sealing Standards and Quality Control
We adhere to international industrial sealing manufacturing standards and conduct multiple quality inspections, from raw material selection to final product testing.
03
Customized Design
From requirements analysis and design and development to mass production and delivery, we design customized sealing solutions tailored to your operating conditions.
04
Rapid delivery
Standard specifications are available in stock, while custom products are delivered according to a flexible schedule, ensuring seamless alignment with project timelines.
05
Comprehensive technical support
Pre-sales consultation, installation guidance, and after-sales service are available via phone, video call, or on-site assistance.
06
Sample Testing and Validation
We offer actual testing of samples to ensure their performance meets your expectations.
STRUCTURE & MATERIAL
Consider the structure first, then choose the materials
The sealing lip, built-in spring, anti-extrusion ring, and outer O-ring work together seamlessly to form a stable sealing system.
STEP 01
Understanding the Four Key Components
Each component has its own function, and together they ensure a stable seal.
01
Seal Lip Body
It comes into direct contact with the medium, and its precision lip geometry prevents fluid leakage.
Confirm Receipt of Previous Item →
02
Built-in spring
Apply a continuous, uniform preload to the lip seal to maintain contact pressure under various pressure and temperature conditions.
Send Operating Condition Confirmation →
03
Anti-extrusion ring
Protects seals under high-pressure conditions, prevents extrusion and deformation, and extends the service life of the assembly.
View anti-extrusion rings →
04
O-ring (outer)
Works in conjunction with the primary sealing structure to enhance overall stability and block external contaminants.
View O-Ring →After the structure has been confirmedNext, select materials based on the medium and environment
STEP 02
Next, select materials for the lip and the spring
Confirm the elastic materials and spring materials separately.
NBR
Nitrile Rubber
General-purpose; suitable for use with mineral oil and hydraulic oil
Oil-resistant
FKM
Fluorine Rubber
Resistant to high temperatures and chemicals; suitable for harsh environments
High-Temperature and Chemical Resistance
PTFE
Teflon
Chemically stable, low friction, and suitable for a wide range of media
Low Friction, Chemical Resistance
EPDM
EPDM rubber
Suitable for water-based media and steam applications
Weather-resistant
304/316
Stainless Steel Springs
For standard applications, select 304; for marine or chlorine-containing environments, select 316.
Corrosion-resistant
Hastelloy
Alloy Springs
Designed for use in extremely corrosive environments, such as those containing strong acids and strong bases
Resistant to strong acids and strong alkalisSPECS
Operating Parameter Range
Temperature Range-40°C to +200°C
Pressure range0.3 to 35 bar
Line speedUp to 15 m/s
Axis Diameter Range6 mm to 500 mm
surface roughnessRa 0.2–0.8 µm
Do you have any old parts or operational data?
Forward it directly to Chengxin for his assessment.
APPLICATIONS
Wide range of industrial applications
Find your device and send us the operating conditions.
Petrochemical Industry | Chemical and Heat Resistance
Shaft seals for pumps, compressors, and mixing equipment, designed to withstand chemical corrosion and high-temperature environments.
Corresponding parts:Anti-extrusion ring、O-Ring
Food and Pharmaceuticals | Sanitary Sealing
Sterile processing and cleaning equipment utilize sealing solutions that comply with hygiene standards.
Corresponding parts:Sanitary Sealing
Water Treatment Systems | Long-Term, Stable Protection
Pumps, valves, and filtration equipment—providing long-term, reliable sealing protection.
Corresponding parts:Flange Gasket
Automotive Industry | High-Speed Rotation and Temperature Fluctuations
Gearbox, differential, and wheel hub seals are subjected to high-speed rotation and temperature fluctuations.
Corresponding parts:Oil Seal
Semiconductor Manufacturing | Process Environment Cleanliness
Critical seals in process equipment maintain the cleanliness of the process environment.
Corresponding parts:FFKM
Vacuum and Precision Machinery | Critical Seals
Vacuum equipment and precision machinery play a critical role in ensuring stable operation through reliable sealing.
Corresponding parts:Vacuum sealing lip
INCOMING MATERIAL VERIFICATION
Verified materials, peace of mind with every delivery
Each batch of parts is accompanied by comparison results and documentation, so they can be accepted directly by the quality control department.
FTIR Material ComparisonWe verified the feedstock material through spectral analysis, and it matched the specifications.
Test reports are traceableThe comparison results and inspection records are retained and can be provided upon request.
The documents are in order, and the specifications are ready for acceptance.Material certification and compliance documentation are provided based on manufacturer or third-party documents, including requirements such as REACH, RoHS, FDA, COA, PFAS, and PFOS.
Simultaneous Verification of Dimensions and AppearanceDimensions and appearance are checked on a batch-by-batch basis and match the drawings.
CUSTOMER SUCCESS
In the end, what we saw was that the equipment really did become more stable.
If the judgment is correct, the equipment will naturally run smoothly.
Hydraulic Equipment
Hydraulic Equipment | Seal Restabilization
After reviewing the materials, dimensions, and actual operating conditions of the sealing components, proceed with the appropriate replacements and adjustments.
After switching to the appropriate materials and sizes, the equipment returned to stable operation.
Food Equipment
Food Equipment | Sealing and Documentation—All in One
Chengxin will assist in selecting sealing components based on the operating conditions and provide the corresponding material documentation.
The sealing solution, along with the accompanying technical documentation, successfully passed the internal quality control process.
High-Temperature, High-Pressure Equipment
High Temperature and High Pressure | Stable Sealing, Easy-to-Control Shutdown
In light of high-temperature, high-pressure, and extended-operation conditions, we re-evaluate material compatibility, dimensions, and installation requirements to ensure that components truly meet the equipment’s needs.
Sealing performance is consistent, making it easy to schedule downtime.
HOW TO GET STARTED
Contact us now to take advantage of the following offers
Let Chengxin Sealing King help you solve your sealing challenges.
01
Free Technical Consultation
Our senior engineers will analyze your application requirements and provide professional material selection recommendations.
02
Sample Testing Services
Free samples are available for your hands-on testing and verification to confirm performance meets expectations.
03
Quick Quote Delivery
Quotes completed within 24 hours; rush orders delivered in 2-3 days to support your project timeline.
CONTACT
Get Started on Your Sealing Upgrade Plan Today
Have Chengxin help resolve the sealing issue, handling everything from requirements analysis to product delivery.