Mechanical Seal Burgmann M7N Multi-Spring Seal SIC G9 Face

Looking for a reliable, cost-effective source for high-quality mechanical seals and pump parts? We are your trusted China-based manufacturer and exporter specializing in full-range industrial sealing solutions, with over years of experience serving global industrial distributors, pump suppliers and system integrators.

Our factory-produced seal portfolio covers every major type you need: single spring, balance/unbalance spring, external mounted, PTFE bellow, cartridge balance, multi-spring balance, dry running reverse balance, agitator double-acting, rubber/metal/elastomer bellow, conical spring, automotive and HVAC compressor seals — all built to strict ISO standards for long service life even in harsh conditions.

We guarantee 100% dimensional and performance interchangeability with original seals for top global pump brands including Flygt, Grundfos, APV, Fristam, Lowara, ABS and many more. No more long lead times or high OEM prices — we deliver equal or better performance at competitive ex-factory prices.

We welcome full customization: send us your samples, CAD drawings or detailed working condition parameters (pressure, temperature, speed, medium), and our engineering team will tailor a sealing solution perfectly matched to your application. To save your sourcing cost and time, we also supply complete lobe pumps, homogenizing pumps and full sets of pump spare parts, making us your single partner for all fluid handling needs.

Q1: Are you a factory or a trading company?

We are a professional manufacturing factory with an in-house dedicated international sales team to deliver full-chain trade services. This structure ensures you get factory-direct competitive pricing, strict quality traceability, and responsive one-on-one export support at the same time.

Q2: Can I get a sample before placing a formal order?

Absolutely. We offer free product samples for your performance verification, you only need to cover the corresponding international shipping cost. This allows you to test the seal’s compatibility, material quality and sealing performance before bulk procurement, eliminating procurement risks in advance.

Q3: Where is your factory located? How can I arrange a visit?

Our production base is located in Ningbo, China, a world-class industrial port city with convenient global logistics access. You can fly directly to Ningbo Lishe International Airport, or take a 1.5-hour high-speed rail ride from Shanghai Pudong/Hongqiao Airport to reach us. All global clients are warmly welcomed to visit our workshop, quality testing lab and production lines at any time.

Q4: How does your factory manage quality control?

Quality is always our top priority. We implement full-process strict quality control covering raw material incoming inspection, CNC machining dimension calibration, dynamic pressure sealing testing and final shipment random inspection. Our factory has obtained ISO 9001 quality management system certification, every batch of products has complete quality traceability records.

Q5: What is your standard production lead time?

Our standard lead time is 10-20 working days after receiving your prepayment. For urgent orders of common standard models, we can arrange priority production to shorten the delivery cycle, to help you quickly solve on-site pump leakage and downtime problems.

Q6: What payment terms do you accept?

For small sample orders and shipping fees, we support flexible payment methods including PayPal and T/T. For formal bulk orders, we adopt T/T at sight as the standard payment term, and we can also negotiate mutually acceptable payment solutions for long-term cooperative clients.

Q7: Is OEM/ODM service available?

Yes, we provide full-range OEM and ODM services for all our mechanical seal products. We can customize seal materials, shaft sizes, pressure and temperature resistance parameters, and even print your brand logo on products, to support your local market brand expansion.

Q8: Can I purchase complete pumps and other pump spare parts from you?

Of course. Beyond mechanical seals, we also supply a full range of pumps and supporting pump parts, including Lobe pumps, Compound & Homogeneous Pumps, Homogeneous & Emulsification Pumps and other fluid handling equipment. This one-stop procurement service greatly reduces your multiple supplier communication costs and logistics costs