J Top Industry and Trade Co., Ltd | High-Quality Sealing Solutions

About J Top Industry and Trade Co., Ltd

Ningbo J Top Industry and Trade Co., Ltd is located in Ningbo, a port city with superior geographical location. We are a factory integrating production, scientific research, and sales, specializing in high-performance sealing solutions for global industrial applications.

With over 20 years of export experience, our factory delivers high-quality products backed by advanced equipment, mature technology, and excellent service. Our commitment to quality has earned the trust of clients across diverse sectors including oil & gas, chemical processing, marine, and power generation.

ISO-Certified Manufacturing Standards
20+ Years of Export Experience
Global Distribution Network
Custom Solutions Available

State-of-the-art production and testing equipment ensuring consistent quality

Our Product Range

We manufacture a comprehensive range of sealing products designed for reliability, durability, and performance under extreme conditions.

Spiral Wound Gasket “W”

Model No: JT-G1000A

Stainless steel winding with graphite filler
ASME B16.20 compliant
Temperature range: -200°C to +650°C
Pressure rating up to 1500 psi

Spiral Wound Gasket with Inner Ring

Model No: JT-G1000B

Inner ring prevents compression over-limit
Carbon steel or stainless steel inner ring
Ideal for high-pressure flanges
Excellent recovery characteristics

Spiral Wound Gasket with Centering Ring

Model No: JT-G1000C

Outer guiding ring for easy installation
Prevents blowout under pressure
Used in pipeline and vessel connections
Customizable material combinations

Spiral Wound Gasket with Inner and Outer Ring

Model No: JT-G1000D

Full compression control with dual rings
Optimal for critical service applications
Resists thermal cycling and vibration
Available in multiple filler materials

Oval Spiral Wound Gasket

Model No: JT-G1000AO

Special oval shape for high-pressure sealing
Used in refinery and petrochemical plants
Higher sealing efficiency than round gaskets
Custom dimensions available

Oval Ring Joint Gasket

Model No: JT-G2000OV

Forged metal construction
API 6A and ASME B16.20 compliant
Reusable and durable
For high-pressure, high-temperature service

Octagonal Ring Joint Gasket

Model No: JT-G2000OT

Octagonal cross-section for better sealing
Used in oilfield and offshore applications
Available in carbon steel, stainless, and alloy
High resistance to creep and relaxation

Kammprofile Gasket

Model No: JT-G3000A

Metal core with flexible sealing layers
Excellent for heat exchangers
High recovery after compression
Resistant to thermal cycling

Metal Serrated Gasket with Outer Ring

Model No: JT-G3000C

Serrated face for enhanced sealing
Outer ring for alignment and support
Ideal for rough flange surfaces
High compressibility and resilience

Insulation Kit

Custom Models Available

Prevents galvanic corrosion
Includes washers, sleeves, and gaskets
Used in pipeline flange connections
Materials: PTFE, Nylon, Phenolic

View All Products

Why Choose J Top Gasket?

We combine decades of expertise with cutting-edge manufacturing to deliver superior sealing performance.

20+

Years of Experience

Two decades of exporting high-quality gaskets to global markets with proven reliability.

100%

Quality Guaranteed

Rigorous quality control at every stage ensures consistent product performance.

Global

Export Ready

Products meet international standards and are trusted by clients worldwide.

✓

Custom Solutions

We offer tailored sealing products to meet specific technical requirements.

Frequently Asked Questions

Get answers to common questions about our products and services.

We use stainless steel (304, 316, 321) for the winding, with fillers such as flexible graphite, PTFE, or non-asbestos materials. Inner and outer rings are typically carbon steel or stainless steel based on application requirements.

Yes, we offer full customization including size, material, pressure rating, and design. Our engineering team works closely with clients to develop sealing solutions tailored to specific operating conditions.

Our products comply with ASME B16.20, API 6A, and other international standards. We follow strict quality control procedures and can provide material test reports (MTRs) and certificates of conformity upon request.

Standard products are typically shipped within 7–15 days. Custom orders may take 2–4 weeks depending on complexity. We provide regular updates throughout the production process.

Yes, our experienced technical team provides support in product selection, installation guidance, troubleshooting, and failure analysis. We're committed to ensuring optimal performance of our sealing solutions.

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