Insulation-Gaskets.com | Premium Flange Insulation Kits & Gaskets Manufacturer

About Us

Ningbo Kaxite Sealing Materials Co., Ltd. is based in Ningbo, Zhejiang Province, China. As one of the largest sealing and heat preservation product manufacturers in China, we provide comprehensive solutions for flange insulation systems worldwide.

Trusted Manufacturer Since 2015

We specialize in Flange Insulation Kits, Insulation Gasket Sets, and related components designed to prevent galvanic corrosion and ensure long-term system integrity in pipelines and valves.

Our products are used across oil & gas, chemical processing, power generation, and marine industries. With a complete product supply chain and professional quality inspection, we deliver reliable performance every time.

Global export to 20+ countries
Custom design & production available
One-stop solution provider
ISO-compliant quality control

Why Choose Our Products?

From material selection to final packaging, every step is optimized for performance, reliability, and customer satisfaction.

Complete Quality Control

Professional quality inspection at every stage ensures consistent performance and compliance with international standards.

High Strength Materials

We use premium-grade phenolic, epoxy glass (G-10/G-11), and Mylar materials for superior insulation and mechanical strength.

Global Export Network

Our products are trusted in over 20 countries, backed by efficient logistics and responsive customer service.

Custom Design Capability

We design and produce according to your specific requirements, including size, material, and configuration.

One-Stop Solution

From gaskets to washers and sleeves, we supply complete flange insulation kits for seamless installation.

Complete Supply Chain

We manage everything in-house — from raw materials to final packaging — ensuring consistency and fast turnaround.

Our Products

Explore our range of high-performance flange insulation components, engineered for durability and electrical isolation.

Phenolic Sleeve

High-strength, heat-resistant insulation sleeve made from phenolic resin. Ideal for high-temperature applications.

Phenolic Insulating Washers

Durable washers with excellent dielectric properties. Resistant to moisture and chemicals.

Mylar Insulating Sleeve

Thin, flexible sleeve with high dielectric strength. Perfect for tight spaces and low-profile installations.

G-11 Glass Epoxy Washer

High mechanical strength and excellent electrical insulation. Suitable for heavy-duty industrial use.

G-10 Glass Epoxy Washer

High-performance insulating washer with excellent resistance to heat and chemicals. Widely used in oil & gas.

Flange Insulation Kits Type F

Complete kit with gasket, washers, and sleeves. Designed for full flange coverage and maximum protection.

Flange Insulation Kits Type E

Full-diameter gasket kits with precision bolt holes. Easy to center and install. Prevents shorting out.

Flange Insulation Kits Type D

Compact design for space-constrained applications. Includes all necessary insulation components.

Frequently Asked Questions

Get answers to common questions about our flange insulation kits and gaskets.

What is a Type E flange insulation gasket kit?

Type E flange insulation gasket kits are designed for full protection of flanges and have the same outside diameter as the flange. Each gasket has precision-located bolt holes. Upon installation, it is recommended that tape be wrapped around the outside of the flange to prevent foreign material from lodging between the exposed portions and causing "shorting out" of the flanges. All Type E gaskets are easily centered with the flange inside diameter.

What materials are used in your insulation kits?

We use high-quality materials including phenolic resin, Mylar film, and glass epoxy (G-10 and G-11). These materials offer excellent electrical insulation, mechanical strength, and resistance to heat and chemicals.

Can you customize the kits?

Yes, we offer custom design and production based on your specifications, including size, material, and configuration. Contact us with your requirements.

Do you ship internationally?

Yes, we export to more than 20 countries and regions worldwide. Our global sales network ensures timely delivery and support.

Get in Touch

For inquiries about our products or pricelist, please contact us directly.

Phone: +86 574 87527771

Email: [email protected]

Fax: +86 574 87527773

Address: No. 432, Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang, China

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