Type E Insulating Gasket

QS Gasket: Type E Insulating Gasket

Name: Type E Insulating Gasket
Standard: ASME B16.5-WN-RF
Material: Klingersil C4400
Size: 8 Inch
Pressure: 150#
Thickness: 3.2 mm
Type: E
Complete Set: with G10 Sleeve and Washers and ZPS
Price: 39.9 - 75 USD
MOQ: 1 PCS
Delivery Date: 7 - 35 Days
Customization: Yes

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This Type E Insulating Gasket is applied to flanges conforming to the ASME B16.5 standard, with a size of 8 inches. It is a core sealing component specifically designed to achieve complete electrical insulation and resistance to galvanic corrosion at flange connections. The complete set precisely matches raised face weld neck flanges of 150# pressure rating, with the core sealing layer made of 3.2mm thick Klingersil C4400 non-metallic material.

Material properties: Klingersil C4400 is produced by high-temperature calendering of high-quality aramid fibers and high-temperature resistant inorganic fillers in nitrile rubber (NBR). This structure endows the gasket with excellent mechanical strength, outstanding cold flow resistance, and superior sealing performance. It maintains dimensional stability under moderate pressure loads and effectively resists media permeation.

This product offers a complete Type E Insulating Gasket kit, which includes not only the gasket but also comes standard with G10 high-strength epoxy glass fiber insulating sleeves, insulating washers, and thickened metal washers. This design completely isolates the metal contact path of the flange bolts, eliminates galvanic corrosion, and ensures the integrity of the insulation effect.

Compared with the common Type F gasket, the difference is as follows: The Type F features a full-face design, requiring coverage of the entire flange end face and the use of extended insulating sleeves. It is commonly used with slip-on or socket weld flanges. In contrast, our Type E Insulating Gasket has an inner diameter centering ring design, sitting precisely on the flange sealing surface without contacting the bolt holes. Used with standard-length G10 sleeves, it is easier to install and is particularly suitable for matching raised face weld neck flanges. While ensuring an effective sealing width, it minimizes the contact area between the media and the gasket material.

Application scenarios: This Type E Insulating Gasket kit is widely used in long-distance oil and gas pipelines, chemical processing plants, seawater systems, and underground or submarine pipelines requiring cathodic protection. It isolates dissimilar metal connections and prevents current leakage. Whether in seawater cooling pipelines on offshore platforms or refined product transmission lines in refineries, this Type E Insulating Gasket assembly provides a reliable and safe insulating seal, ensuring long-term stable operation of the pipelines. We support orders starting from one piece and offer customization services, striving to meet your engineering requirements.

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