Type E Insulation Gasket (Full Face)

At Kriloha Ltd., we understand that “Total Isolation” requires more than just a seal—it requires a complete physical barrier. In environments where moisture and debris are constant, a smaller gasket can leave the flange faces vulnerable to electrical tracking. The Kriloha Type E Insulation Gasket is our engineered answer for “Maximum-Surface” protection. As a premier global provider of flange isolation technology, Kriloha Gaskets has perfected the Full-Surface Laminate technology required to provide 100% electrical separation.

The engineering of our Type E series is based on Structural Integrity. By extending the gasket to the outer edge of the flange, we provide a stable “platform” that resists the bending moments often found in large-diameter or high-vibration piping systems. At Kriloha, we utilize a specialized vacuum-bonding process to seat our internal seals (PTFE or Viton) into the G-10/G-11 retainer. This ensures that the seal cannot be “blown out” even under extreme pressure surges.

Manufacturing these kits at Kriloha involves strict Laminate Density Verification. We ensure every Type E gasket provides the necessary Kilovolt (kV) dielectric strength to withstand the electrical potential found in high-output cathodic protection systems. Whether you are isolating a flat-face municipal water main or a high-pressure petrochemical header, Kriloha Type E Insulation Gaskets provide the mechanical invincibility and electrical agility your facility demands. By choosing Kriloha Ltd., you are investing in a “Full-Barrier” technology that guarantees the longest possible lifespan for your pipeline infrastructure.

Primary Use Cases

Cathodic Protection (CP) Systems: The primary choice for insulating buried or submerged pipelines to ensure that CP currents are not “drained” into non-protected structures.
Flat-Face (FF) Flanges: Type E is the mandatory standard for flat-face flanges to ensure uniform loading across the entire surface and prevent flange rotation or stress.
Above-Ground Piping Stations: Used in refineries and chemical plants where external environmental factors (rain, salt spray) could cause electrical bridging on a smaller gasket.
Dissimilar Metal Isolation: Preventing galvanic corrosion at the junction of different piping materials, such as ductile iron to stainless steel.
Water & Wastewater Treatment: Providing long-term electrical isolation for pumps, meters, and valves in municipal networks.

FAQs

Why choose Type E over Type F?

Type E is self-centering and covers the entire face, making it much harder for dirt or moisture to cause an electrical short (bridging) between the flanges. It is also safer for flat-face flanges.

Can I use a Type E gasket on a Raised-Face (RF) flange?

Yes, Type E can be used on both Flat-Face and Raised-Face flanges. However, for Raised-Face flanges, Type F is also an option if external debris is not a concern.

What is the difference between G-10 and G-11 materials?

G-10: The industry standard for temperatures up to +150°C.

G-11: A high-temperature variant that maintains its mechanical strength and dielectric properties up to +200°C.

What comes in a standard Kriloha I.K. Set?

Each set includes one Type E Gasket, one high-dielectric bolt sleeve per bolt, two insulating washers per bolt, and two plated steel washers per bolt.

How do I prevent the sleeves from breaking during installation?

Ensure the flanges are properly aligned before inserting the bolts. Kriloha sleeves are made of high-strength Mylar or G-10, but they can be damaged if forced into misaligned holes. Tighten bolts using the “star” pattern to the torque specs provided.