Custom CNC Pump Mechanical Seal Parts

With 25 years of profound experience in the mechanical parts industry, Xiamen Goldcattle has utilized its expertise in CNC precision machining to pioneer the “condition – customized” model. From deep – sea seawater pumps to high – temperature hot water pumps, we create exclusive mechanical seal parts for various pumps. In extreme conditions, we reduce the leakage rate by 80% and extend the service life by 120%, redefining the reliability standards of pump sealing systems.

• High – Pressure Strengthening: For 10MPa high – pressure pumps in the petrochemical industry, the thickness of the seal ring is increased by 30%, the spring stiffness is enhanced by 40%, the pressure deformation resistance is improved by 50%, and the leakage risk is reduced by 70%.

• Environmental Adaptation: Low – temperature pumps in the Arctic Circle use low – temperature – resistant rubber (which still maintains elasticity at – 50°C). In tropical high – humidity areas, 316L stainless steel with Teflon coating is adopted, which can pass the salt spray test for more than 2000 hours without rust.

• Material Properties: Silicon carbide content ≥ 95%, hardness HV2800 – 3200, thermal conductivity 120 – 150W/(m·K), with excellent high – temperature, high – pressure, and wear – resistance performance.

• Processing Advantages:

• • CNC precision grinding results in a surface roughness of Ra ≤ 0.05μm, and the flatness error of the sealing surface is ≤ 0.0009mm. The leakage rate is 85% lower than that of ordinary ceramics.

• • A special sintering process enhances the material density, making it suitable for high – temperature and high – pressure steam pumps at 200°C and 10MPa. The measured service life exceeds 5000 hours.

• Material Properties: Contains multiple alloy elements such as Cr/Mo/W. In strong acid – base environments (such as sulfuric acid and hydrochloric acid), the corrosion rate is < 0.1mm/year, and the pitting corrosion resistance equivalent is ≥ 40.

• Processing Advantages:

• • CNC electrical discharge machining ensures the forming accuracy of complex sealing structures to ± 0.01mm, improving sealing stability.

• • Surface polishing treatment reduces the friction coefficient to 0.08, reducing wear and being suitable for pumps handling highly corrosive media in the chemical and electroplating industries.

• Material Properties: PTFE content ≥ 90%, added with carbon fiber and other reinforcing materials. The friction coefficient is ≤ 0.1, and the linear expansion coefficient is reduced by 30%, with excellent self – lubrication and anti – creep properties.

• Processing Advantages:

• • CNC compression molding ensures a dimensional accuracy of ± 0.03mm, and it can still maintain good sealing at a high speed of 3000r/min.

• • A customized formula increases the material’s temperature resistance to 150°C, meeting the needs of high – speed centrifugal pumps, vacuum pumps, etc.

• Material Properties: NBR has a nitrile content of 35% – 40%, with good oil resistance, wear resistance, and water resistance. 45# steel, after quenching and tempering treatment, has a hardness of HB220 – 250, providing reliable structural support.

• Processing Advantages:

• • CNC turning ensures that the dimensional accuracy of the 45# steel seal seat reaches IT6 level, and the fit clearance with the NBR seal is ≤ 0.05mm.

• • The NBR seal, after special vulcanization treatment, has a 60% extended service life in normal – temperature industrial water environments.

 

Condition Type	Core Material	Treatment Process	Key Performance
High – Temperature and High – Pressure	Silicon Carbide Ceramics	Precision Grinding + Special Sintering	Temperature resistance of 200°C, pressure resistance of 10MPa, leakage rate < 0.01mL/h
Strongly Corrosive Media	Alloy C – 276	Electrical Discharge Machining + Surface Polishing	Corrosion rate in strong acid – base < 0.1mm/year, sealing accuracy ± 0.01mm
High – Speed	PTFE Composites	Compression Molding + Customized Formula	Stable operation at 3000r/min, temperature resistance of 150°C
Ordinary Industrial Water	NBR + 45# Steel	Turning + Vulcanization Treatment	Water resistance at normal temperature, 60% extended service life

 

• Sealing Surface Grinding: A five – axis linkage grinding device achieves a surface roughness of Ra ≤ 0.05μm and a flatness error of ≤ 0.0009mm, increasing sealing reliability by 90%.

• Spring Manufacturing: A CNC spring coiling machine produces springs with an accuracy of ± 0.05mm and a stiffness deviation of ≤ 5%, ensuring a stable sealing force.

• Automated Assembly: An automated assembly line enables efficient assembly at a rate of 20 seconds per set. The efficiency of small – batch production is increased by 80%, and emergency orders can be responded to within 24 hours.

 

Indicator	Traditional Machining	CNC Machining	Improvement Range
Flatness Error of Sealing Surface	0.002mm	0.0009mm	55%
Spring Accuracy	± 0.1mm	± 0.05mm	50%
Scrap Rate	5%	0.5%	90%

 

• Requirement Diagnosis: Multilingual customization plans are output within 48 hours, including material adaptation analysis, cost composition details, and life prediction reports.

• Collaborative R & D: Support machining according to drawings (with an error correction rate of 98%), joint design (optimizing the service life by 40% based on on – site conditions), and 3D printing for rapid prototyping (verifying complex structures within 7 days).

• Global Delivery: More than 100 cooperative customers cover six continents. A deep strategic cooperation network has been established in Europe and America to ensure local service response.

 

Project Scenario	Customization Solution	Performance Improvement
High – Temperature and High – Pressure Pumps in Petrochemical Industry	Silicon Carbide Ceramic Seal Ring + High – Strength Spring	Leakage rate reduced by 90%, service life extended to 8000 hours
Strongly Corrosive Pumps in Electroplating Workshops	Alloy C – 276 Seal Components	2 – year corrosion – free operation, far exceeding the industry average
High – Speed Pumps in Urban Water Supply	PTFE Composite Seal Parts	Stable operation at 3500r/min, energy consumption reduced by 15%

 

• Possess 20 patents in CNC machining and material treatment.

• Participate in the formulation of 3 ISO international standards (including the standard for measuring the leakage of mechanical seals).

• Equipped with an extreme condition simulation laboratory (supporting environmental tests from – 50°C to 300°C and 0 – 15MPa).

• More than 50 imported CNC devices (Swiss GF machining centers / Japanese Okuma machine tools).

• An annual production capacity of 1 million pieces, supporting production in accordance with American standards (API 682), European standards (EN 12756), and national standards.

• Key dimensional accuracy reaches IT5 level, and the factory pass rate is 99.9%.

• Customized design reduces costs by 35% – 50% compared with European and American brands.

• Provide graded plans for basic, enhanced, and top – end models, with a minimum order quantity of 10 pieces.

• Provide free condition – adaptation plans and cost calculations.

• 24 – hour multilingual technical support (Chinese / English / German / Arabic).

• After – sales service points are set up in more than 30 countries, and can reach major construction areas in Europe and America within 48 hours.

• Provide value – added services such as installation and debugging, leakage detection, and operation and maintenance.

✅ Provide CE, ASME, and ISO 9001 certifications. The materials and processes comply with EU RoHS/REACH environmental protection standards, supporting global customs clearance.

—— Operation and Maintenance Director of an Urban Water Affairs Group