Flange Insulation Gasket Sets
Model:KXT 1001
Flange Insulation Gasket Sets are usd to solve the sealing and insulating problems of flanges, and to control losses due to corrosion and leakage of pipelines. They 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.
Flange Insulation Gasket Sets – Complete Electrical Isolation & Corrosion Control for Piping Systems
Quick Summary: KXT 1001 flange insulation gasket sets provide complete electrical isolation for piping systems. Available in 4 types – Type E (full-face), Type F (raised-face), Type D (RTJ ring-joint), and Type O (with elastomeric seals). Core materials: phenolic (≤150°C) or G-10 (≤260°C). Each kit includes insulating sleeves, washers, and alignment pins. Compliance: ISO 9001, ASME B16.5 / B16.20. Request a free sample →
KXT 1001 Flange Insulation Gasket Sets – Reliable Corrosion Control & Electrical Isolation for Piping Systems
Kaxite Sealing presents the KXT 1001 Flange Insulation Gasket Set – a comprehensive solution designed to prevent electrolytic corrosion, control stray electric currents, and enhance the effectiveness of cathodic protection systems in piping networks. These flange insulation gasket kits are engineered for oil, gas, water, refinery, and chemical plants, where sealing and electrical isolation are critical to asset integrity and operational safety.
Why KXT 1001? Our insulating flange gasket kits are available in four standard configurations – Type E (full-face), Type F (raised-face), Type D (RTJ ring-joint), and Type O (with sealing elements) – to suit any flange design. Manufactured from high‑strength phenolic or G‑10 materials, these sets include precision‑machined gaskets, insulating sleeves, and washers to ensure complete electrical isolation. They effectively prevent galvanic corrosion caused by dissimilar metals and stray currents, extending pipeline life and reducing maintenance costs.
As a leading flange insulation gasket set supplier in China, Kaxite offers kits in all standard ANSI/ASME flange sizes, with custom dimensions and materials (including Nitrile, Viton, or Teflon® facings) available on request. All kits are supplied with full installation instructions and alignment pins for proper assembly. Request a free sample or get a wholesale quote today.
Types E, F, D, O
Core Materials Phenolic / G‑10
Sealing Elements Nitrile, Viton, Teflon®
Temperature Range ‑40°C to +260°C
Insulation Resistance ＞ 10⁶ Ω
Compliance ISO 9001, ASME B16.5
Why KXT 1001 Flange Insulation Gasket Sets?
- ✅ Complete Electrical Isolation – Prevents stray current corrosion and enhances cathodic protection efficiency
- ✅ Multiple Configurations – Type E (full‑face), Type F (raised‑face), Type D (RTJ), and Type O (with elastomeric seals)
- ✅ High‑Strength Materials – Phenolic and G‑10 cores with excellent mechanical and dielectric properties
- ✅ Chemical & Temperature Resistance – Suitable for aggressive media and wide temperature ranges
- ✅ Precision Engineered – Tight tolerances for proper flange alignment and reliable sealing
- ✅ Easy Installation – Supplied with insulating sleeves, washers, and alignment pins
Available Configurations – Type E, F, D & O Flange Insulation Gasket Sets
Kaxite offers four standard types of flange insulation gasket sets to match any flange design and service condition. Each set includes the central gasket, insulating sleeves, washers, and installation instructions.
Type F – Raised‑Face Insulation Gasket Set
The Type F flange insulation gasket is designed to fit the raised face portion of flanges. Its outside diameter is slightly smaller than the bolt circle, allowing alignment by insulating sleeves. This design is commonly used in applications where full‑face coverage is not required but electrical isolation is still essential. Same material options as Type E.
Type E – Full‑Face Insulation Gasket Set
Designed for full protection of flanges, the Type E flange insulation gasket has the same outside diameter as the flange and features precision‑located bolt holes. It ensures complete electrical isolation across the entire flange face and is ideal for critical services where stray current must be eliminated. Available in phenolic and G‑10 materials, with optional Nitrile, Viton, or Teflon® facing for enhanced sealing.
Type D – Ring‑Type Joint (RTJ) Insulation Gasket Set
Specifically designed for Ring Type Joint (RTJ) flanges, the Type D insulation gasket is manufactured from medium‑weave fabric‑reinforced phenolic to match standard ASA/ANSI ring groove dimensions. Available in octagonal and oval shapes, it provides reliable isolation in high‑pressure, high‑temperature applications.
Type O – Insulation Gasket Set with Sealing Elements
The Type O flange insulation gasket incorporates a sealing element (elastomer or Teflon®) on each side of the central gasket, providing enhanced sealing performance in addition to electrical isolation. Available in both Type E and Type F styles, with materials including Nitrile, Viton, and Teflon®. Ideal for applications where a high‑integrity seal is required alongside cathodic protection.
* All types can be supplied in custom dimensions, bolt hole patterns, and materials. Contact our flange insulation gasket experts for specific flange details.
ISO 9001:2015 ASME B16.5 Compliant Phenolic / G‑10 Options Elastomer Sealing Elements Custom Sizes Available
Key Advantages of KXT 1001 Flange Insulation Gasket Sets
Effective Cathodic Protection Enhancement – By electrically isolating flanges, our flange insulation kits maximize cathodic protection system performance, preventing costly pipe corrosion.
Superior Dielectric Properties – Phenolic and G‑10 materials offer high insulation resistance (>10⁶ Ω) to block stray currents effectively.
Versatile Configurations – Choose from Type E, F, D, or O to match your flange style (full‑face, raised‑face, RTJ, or with elastomeric seals).
Chemical & Thermal Resistance – Suitable for aggressive media and temperatures from ‑40°C to +260°C, depending on material selection.
Complete Kit – Each insulating flange gasket kit includes gasket, insulating sleeves, washers, and alignment pins, simplifying installation.
Long Service Life – High‑quality materials resist aging, creep, and environmental degradation, reducing maintenance frequency.
Technical Specifications – KXT 1001 Flange Insulation Gasket Sets
Typical properties for our standard phenolic and G‑10 flange insulation gaskets. Custom material blends (e.g., glass‑reinforced epoxy) and elastomer facings are available.
| Property | Phenolic | G‑10 (FR‑4) |
|---|---|---|
| Dielectric Strength (kV/mm) | ≥ 12 | ≥ 20 |
| Insulation Resistance (Ω) | ＞ 10⁶ | ＞ 10⁷ |
| Compressive Strength (MPa) | ≥ 200 | ≥ 350 |
| Temperature Range (°C) | ‑40 to +150 | ‑40 to +260 |
| Water Absorption (%) | ≤ 1.5 | ≤ 0.5 |
| Flammability Rating | HB | V‑0 |
* Type D (RTJ) gaskets are manufactured to ANSI/ASME B16.20 dimensions. Contact our flange insulation gasket specialists for detailed material compatibility charts.
Suggested Flange Isolation Material Compatibility
Selecting the right material for your flange insulation gasket set depends on the operating temperature, pressure, and media. Below is a quick guide for standard options:
- Phenolic: Economical, good chemical resistance, suitable for moderate temperatures (≤150°C) and most hydrocarbons, water, and dilute acids.
- G‑10 (FR‑4): Superior mechanical and dielectric properties, higher temperature resistance (≤260°C), excellent for high‑pressure and demanding environments.
- Nitrile Facing: Good oil and fuel resistance, suitable for general service up to 120°C.
- Viton® Facing: Excellent chemical and high‑temperature resistance (up to 200°C), ideal for aggressive media and high‑temperature applications.
- Teflon® (PTFE) Facing: Near‑universal chemical resistance, non‑stick surface, suitable for corrosive service and clean applications.
Note: For specific media compatibility, please consult our flange insulation gasket technical team with your process details.
Flange Insulation Gasket Types – Quick Selection Guide
| Type | Flange Style | Coverage | Sealing Element | Typical Application |
|---|---|---|---|---|
| E | Full‑face | Complete flange | Optional | Critical isolation |
| F | Raised‑face | Raised portion | Optional | Standard isolation |
| D | RTJ (Ring Joint) | Ring groove | No | High‑pressure / high‑temp |
| O | E or F style | Full or raised | Nitrile / Viton / Teflon | Enhanced sealing + isolation |
* Choose Type O when both electrical isolation and a resilient seal are required. Contact us for custom flange insulation gasket combinations.
Typical Applications & Industries
Oil & Gas Pipelines Isolation of flanges to prevent galvanic corrosion and enhance cathodic protection in onshore and offshore pipelines.
Refineries & Petrochemical Flange isolation in process piping, heat exchangers, and storage tanks to avoid stray currents and electrolytic corrosion.
Chemical Processing Insulating flanges in aggressive media environments to protect equipment and ensure safety.
Power Generation Insulation in cooling water systems, fuel lines, and steam piping to prevent corrosion.
Water & Wastewater Isolation of flanges in treatment plants and distribution networks to control stray currents.
Offshore Platforms Critical isolation for subsea and topside piping systems exposed to seawater and severe conditions.
Why Choose Kaxite for Flange Insulation Gasket Sets?
30+ Years of Sealing Expertise – Kaxite has been manufacturing industrial gaskets since 1990, with extensive experience in insulation and corrosion control.
ISO 9001:2015 Certified – All processes are certified with strict quality controls and full traceability.
Custom Engineering – We offer custom dimensions, bolt hole patterns, materials, and elastomer facings to meet your specific flange requirements.
Competitive Factory Pricing – Direct supply reduces costs while maintaining high quality.
Fast Technical Support – Our engineers respond within 2 hours with application recommendations and design assistance.
Global Logistics – We ship to over 40 countries with flexible packaging options.
Proven Reliability: Kaxite flange insulation gasket sets are specified by major oil and gas, chemical, and power companies worldwide for their durability and effectiveness in mitigating corrosion.
Quality Assurance & Regulatory Compliance
Kaxite Sealing is an ISO 9001:2015 certified manufacturer. Our flange insulation gasket sets are produced under strict process controls – from material selection, precision machining, to final assembly and packaging. Each kit is inspected for dimensional accuracy, insulation resistance, and completeness of components. We provide material test certificates (MTCs) and can perform dielectric testing upon request, ensuring full traceability and compliance with ASME B16.5 and B16.20 standards.
- ISO 9001:2015
- ASME B16.5 / B16.20
- 100% Dimensional Inspection
- Insulation Resistance Tested
- Full Component Traceability
Quality you can depend on – our flange insulation kits are trusted by engineers for critical cathodic protection and corrosion control applications.
Custom Manufacturing & OEM Services – Free Sample Available
As a professional flange insulation gasket set manufacturer in China, we offer complete customization to meet your exact flange specifications. Request a free sample or get a bulk quote today:
- Custom flange dimensions and bolt hole patterns
- Material selection: phenolic, G‑10, or other composites
- Elastomer facings: Nitrile, Viton, Teflon®, or custom
- Type D oval/octagonal shapes to ASME/ANSI standards
- Insulating sleeves and washers in various sizes
- Private label packaging for distributors
- Just‑in‑time delivery and inventory management
Request a free flange insulation gasket sample or ask for a tailored bulk quote – our team responds within 24 hours with competitive factory pricing and lead‑time estimates.
Frequently Asked Questions About Flange Insulation Gasket Sets
- Q: What is the purpose of a flange insulation gasket set?
- A: A flange insulation gasket set provides electrical isolation between two flange faces, preventing galvanic corrosion caused by dissimilar metals and blocking stray electric currents. This enhances the effectiveness of cathodic protection systems and extends the service life of piping systems.
- Q: What is the difference between Type E, Type F, Type D, and Type O?
- A: Type E gaskets cover the entire flange face (full‑face). Type F gaskets cover only the raised face portion. Type D gaskets are designed for Ring‑Type Joint (RTJ) flanges to fit the ring groove. Type O gaskets include a sealing element (elastomer or Teflon®) on both sides for enhanced sealing performance.
- Q: What materials are used for flange insulation gaskets?
- A: Common materials include phenolic resin and G‑10 (glass‑reinforced epoxy). G‑10 offers higher strength and temperature resistance (up to 260°C). For Type O, facing materials include Nitrile, Viton, and Teflon® for chemical and temperature compatibility.
- Q: How do I install the insulation gasket set correctly?
- A: Install the central gasket between the flanges, align the bolt holes, and place insulating sleeves over the bolts and washers under the nuts. Use alignment pins (supplied) to ensure proper centering. Tighten bolts evenly to the recommended torque. Wrap tape around the flange outer edge to prevent foreign material from causing a short circuit.
- Q: Can you supply kits for non‑standard flange sizes?
- A: Yes, we can manufacture insulating flange gasket kits to any custom flange dimension, bolt hole pattern, and material specification. Simply provide your flange drawing or ASME/ANSI standard details, and we will deliver a tailored solution. Contact us for a custom quote.
- Q: How do flange insulation gasket sets enhance cathodic protection?
- A: By electrically isolating flanges, flange insulation gasket kits prevent stray current from bypassing the cathodic protection system. This ensures that protection current is directed to the pipe surface, maximizing corrosion prevention efficiency and extending pipeline service life.
- Q: What are the standard dimensions for Type D RTJ insulation gaskets?
- A: Type D gaskets are manufactured to ANSI/ASME B16.20 ring groove dimensions. Available in both octagonal and oval profiles for standard flange sizes from ½″ to 24″. Custom dimensions are available upon request.
Partner with Kaxite Sealing – your trusted flange insulation gasket set manufacturer and supplier in China. With decades of sealing expertise, advanced manufacturing capabilities, and a commitment to quality, we deliver isolation solutions that prevent corrosion, extend pipeline life, and ensure safe operations. Request a free flange insulation gasket sample or get a tailored bulk quote today – our engineers respond within 24 hours.
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