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Premium Industrial Seals & Gaskets Supplier

With over 20 years of expertise, NBSeals designs, manufactures, and supplies high-performance sealing solutions trusted by global leaders like Sinopec, 3M, and CNOOC. ISO 9001 certified, FDA-approved ePTFE products, and one-stop sourcing for all your industrial sealing needs.

Industrial Seals and Gaskets

About NBSeals

A trusted leader in industrial sealing solutions with over two decades of innovation, quality, and global service.

NBSeals, operating as Ningbo Bandak Industrial Co., Ltd., is a professional seals & gaskets manufacturer based in Cixi, China. Since our inception, we have specialized in the design, manufacturing, and distribution of high-performance industrial sealing products.

With two dedicated production bases for ePTFE products and gland packing, we maintain strict quality control from raw material inspection to final product testing. Our 30,000 sq.m facility supports a monthly capacity of 10 tons of braided packing and 20 tons of PTFE resin processing.

We proudly serve over 350 international clients and 400 domestic partners across 90+ countries, offering OEM/ODM services, technical support, and customized sealing solutions tailored to your application.

20+
Years of Industry Experience
90+
Countries Served
30,000
Sq.M Production Space
10T
Monthly Packing Capacity

Our Sealing Solutions

From high-temperature gaskets to chemical-resistant packings, we offer a comprehensive range of industrial sealing products engineered for reliability and performance.

Corrugated Gasket

Corrugated Gasket

Metallic corrugated gaskets with soft coatings for high-pressure and high-temperature applications. Ideal for refineries and petrochemical plants.

Expanded PTFE Gasket

Expanded PTFE Gasket

Chemically inert, FDA-compliant ePTFE gaskets with excellent sealing performance in aggressive environments. TUV and SGS certified.

Mechanical Seals

Mechanical Seals

Precision-engineered mechanical seals for pumps and rotating equipment. Designed for long service life and minimal leakage.

Spiral Wound Gasket

Spiral Wound Gasket

Combines a wound metal strip with filler material for superior resilience under thermal cycling and pressure fluctuations.

PTFE Products

PTFE Products

Includes PTFE sheets, rods, tapes, and custom-machined components. Offers unmatched chemical resistance and low friction.

Braided Packing

Braided Packing

High-strength braided gland packing made from aramid, graphite, PTFE, and other fibers for dynamic sealing in valves and pumps.

Double Jacket, Kammprofile, Ring Joint & Metallic Gaskets

Metallic & Semi-Metallic Gaskets

Engineered for extreme conditions with high tensile strength and thermal stability. Customizable for ASME, API, and DIN standards.

Insulation Gasket Kits & Refractory Materials

Insulation & Thermal Solutions

Complete insulation gasket kits for cathodic protection and high-temperature refractory materials for industrial furnaces.

Non-Metallic Gaskets & Rubber Parts

Non-Metallic Gaskets

Affordable, flexible sealing solutions made from compressed fiber, rubber, and other non-metallic materials for general industrial use.

Why Choose NBSeals?

We combine technical expertise, manufacturing excellence, and customer-first service to deliver lasting sealing solutions.

Quality Assurance

Strict quality control from raw material inspection to final testing. All products meet or exceed ISO 9001 standards.

Active R&D Team

Dedicated engineers with 5+ years of experience provide technical support and custom design solutions quickly.

Fast Delivery

Ample stock available. Urgent orders guaranteed 24-hour turnaround. Shipped globally by air, sea, or express.

Competitive Pricing

Professional expertise and efficient production ensure the most competitive prices for high-quality sealing solutions.

After-Sales Support

Stable partnerships with distributors worldwide. Engineering assistance and technical training available.

Large Production Capacity

Two production bases with trained workforce. 10 tons/month gland packing capacity and 20 tons/month PTFE resin use.

20+
Years Experience
90+
Countries Served
350+
Global Clients
30K
Sq.M Facility

Frequently Asked Questions

Everything you need to know about our sealing products and services.

Are you a trader or manufacturer?

We are both. With years of industry experience, we manufacture our own ePTFE and braided packing products, and also distribute a complete range of sealing solutions.

What certifications do you have?

Our ePTFE products are FDA-approved and certified by TUV and SGS. All other products are manufactured under the ISO 9001 quality system and meet or exceed industry standards.

How competitive are your prices?

Based on our industry expertise and efficient operations, we offer the most competitive prices for the same quality grade.

What is your lead time?

Regular-sized products are in stock for fast delivery. Urgent orders enjoy priority scheduling with a guaranteed 24-hour turnaround.

Can I get a sample for testing?

Yes, samples are available free of charge. However, the initial express shipping cost is not covered by us.

Do you support third-party inspection?

Yes, we accept third-party inspections as per your requirements.

Get in Touch

Ready to discuss your sealing needs? Contact us today for expert guidance and a fast quote.

Ningbo Bandak Industrial Co., Ltd
No.727, Suntang North Road, Cixi Industrial Area, Ningbo, China / 315399

Phone: 86-574-28904756
WhatsApp: 86-18606595356
Email: info@nbseals.com

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