China manufacturer of high-performance flange insulation gasket kits for cathodic protection, corrosion control, and electrical isolation in oil, gas, water, refinery, and chemical pipelines.
Our flange insulating gasket sets are designed to solve sealing and insulation challenges across ASME, ANSI, DIN, and JIS flange standards. Each kit includes an insulating gasket, bolt sleeves, insulating washers, and steel washers—delivering complete electrical isolation and leak-proof sealing.
From high-pressure offshore platforms to high-temperature refinery lines, our gaskets withstand extreme conditions. Materials include G10/G11 laminates, phenolic, neoprene-faced composites, and stainless steel cores for superior durability.
As a leading flange insulating gasket supplier in China, we serve procurement professionals worldwide. Our low MOQ, competitive wholesale pricing, and 24-hour quote response make us the preferred partner for bulk orders.
We manufacture Type D, Type E, Type F, and custom-designed flange insulation gasket sets. Below is a breakdown of our core offerings—each tailored to specific application requirements.
What is Type D? Designed to fit into the ring groove of ring-type-joint (RTJ) flanges, Type D gaskets are ideal for high-pressure and high-temperature applications.
Why choose cathodic protection gaskets? These kits are specifically engineered to control stray electric currents and prevent corrosion in pipeline systems, extending asset life and reducing maintenance costs.
What makes SS core different? A stainless steel core bonded with G10/G11 high-strength insulating laminate delivers exceptional mechanical strength and electrical insulation—ideal for high-pressure and demanding sealing applications.
The KXT-150 model adds a spring-energized Teflon seal for leak-proof confidence, with the seal groove machined directly into the steel core to eliminate inter-material leakage.
Industry standard for flat isolation. These gaskets feature soft neoprene rubber factory-bonded to both sides of a laminated phenolic retainer, providing a reliable sealing surface for oil and gas applications.
Eliminate middlemen. As a manufacturer in Ningbo, China, we offer competitive wholesale prices without compromising quality.
Need non-standard dimensions, special materials, or specific flange drilling patterns? Our engineering team delivers custom solutions tailored to your project.
Located in Ningbo port city, we ensure efficient logistics. Lead times as short as 7–15 days for bulk orders, with global shipping options.
Every batch undergoes rigorous testing. We comply with ASME, ANSI, DIN, and JIS standards, backed by ISO 9001 certification and full traceability.
A complete kit typically includes: one insulating gasket, one insulating sleeve per bolt, one insulating washer per nut, and one steel washer per nut.
We offer phenolic, G10, G11, neoprene-faced phenolic, and stainless steel core options. Material selection depends on temperature, pressure, and chemical exposure requirements.
Type D fits RTJ flange ring grooves for high-pressure sealing. Type E is designed for raised-face flanges. Type F is a full-face gasket for flat-face flanges. Each type addresses specific flange geometries and pressure ratings.
Yes. We support sample orders for quality validation. Contact our sales team to discuss your requirements and request a free sample (shipping fees may apply).
MOQ is flexible—we accommodate both small-batch and high-volume orders. Standard lead time is 7–15 days for bulk production, depending on quantity and customization.
Contact Ningbo Kaxite Sealing Materials Co., Ltd. today for a competitive price list, technical support, or to discuss your custom flange insulation requirements. Our team responds within 24 hours.
Ningbo Kaxite Sealing Materials Co., Ltd. — Professional flange insulating gasket sets manufacturer and supplier in China. Quality-driven, procurement-focused, globally trusted.
Type D flange insulation gasket kits are used for controlling losses due to corrosion.Type D flange insulation gasket kits can be used to control stray electric currents in piping at oil, gas, water, refinery, and chemical plants, to increase the effectiveness of cathodic protection systems.
Cathodic Protection Flange Insulating Gaskets are used for controlling losses due to corrosion. They can be used to control stray electric currents in piping at oil, gas, water, refinery, and chemical plants, to increase the effectiveness of cathodic protection systems.
Flange insulating gasket kits are used to solve the sealing and insulating problems of flanges, and to control losses due to corrosion and leakage of pipelines.Flange insulating gasket kits are widely used to seal flanges and control stray electric currents in piping at oil, gas, water, refinery, and chemical plants, to increase the effectiveness of cathodic protection systems.
SS core flange insulation gasket kit utilizes a stainless steel core boned with high strength insulating laminate G10 or G11, which not only maintains the high strength of stainless steel, but also reaches an excellent insulation.
KXT-150 Flange insolating gasket for high pressure utilizes a stainless steel core boned with high strength insulating laminate G10 or G11, which not only maintains the high strength of stainless steel, but also reaches an excellent insulation. It consists of a spring-energized Teflon seal which provides high confidence sealing and eliminates costly leaks. And the seal groove is cut into the stainless steel core, which can avoid leakage through the interval of two materials.
Neoprene Faced Phenolic Gaskets have been used as standard "flat" isolating gaskets in the oil and gas industries for many years. Soft neoprene rubber sheets are factory applied to both sides of a laminated phenolic retainer providing an effective sealing surface. The temperature limit of these gaskets is approximately +175º F. (+80º C.).