Flange Insulation Kit ASME B16.5 Insulation Gasket Kit – Type F for Raise Face Flanges

China manufacturer and exporter of Flange Insulation Kit ASME B16.5 Insulation Gasket Kit – Type F for Raise Face Flanges

Flange-Isolating-Gasket-Kits are manufactured according to ANSI B16.5 specifications up to 24″.

Gasket sets for flange insulation are designed to ensure the integrity and reliability of the pipeline and piping system through safety and corrosion protection. By eliminating metal-to-metal contact, static flow is stopped to prevent corrosion and aid in the cathodic protection of the piping system.

Flange insulation gasket kits provide both effective sealing and reliable electrical insulation of flanges. Made of high-quality materials with high dielectric constant and low water absorption. Flange insulation gaskets kits are available in different configurations to meet any possible need. Flange insulation gasket kits come in all DIN, ASME and API classes.

Flange Insulation kits can be  used in the petrochemical, oil refinery, offshore seawater environments, where the transfer of volatile fluids through the pipeline can create explosive conditions which could be ignited by stray electrical currents.

Each flange insulation set comprises one central flat or oval section gasket, plus one insulation sleeve, two insulating and two plated steel washers per bolt. The sets are individually packed and clearly labelled with the flange rating, size, type and material combination.

Components of a Flange Isolation Kit

A typical flange isolation kit includes:

  1. Isolation Gasket:
    • Types: Full-face, ring-type, or specific designs like the API RTJ.
    • Materials: Phenolic, PTFE (Teflon), G10/G11 (fiberglass-reinforced epoxy), or high-temperature options like mica or spiral-wound designs.
  2. Isolation Sleeves:
    • Insulate the bolts from the flange.
    • Made of non-conductive materials like Mylar, G10, or Nomex.
  3. Isolation Washers:
    • Two per bolt (one insulating, one metallic for load distribution).
    • Materials: Nylon, phenolic, or G10.
  4. Metallic Washers:

Types of Flange Isolation Kits

Type F gaskets are made to fit the raised face portion of the flange only.

Type F Type F gaskets are made to fit the raised face portion of the flange only. As there are no bolt holes in the “F” gasket. the inside diameter of the bolt hole circle is slightly smaller than the outside diameter of the gasket.

As there are no bolt holes in the “F” gasket. the inside diameter of the bolt hole circle is slightly smaller than the outside diameter of the gasket. Assuring an exact, automatic positioning of the gasket. Type F Gaskets are available in the same materials as the Type E Gaskets.

Standard thickness of 1/8″.

Type F

A 3,2 mm (1/8 inch) thick plated steel washer

B 3,2 mm (1/8 inch) thick insulating washer

C Full length insulating sleeve

D Inner Bolt Circle Gasket

Flange Insulation Kit ASME B16.5 Insulation Gasket Kit Type F for Raise Face Flanges

The Type F Insulation Gasket Kit is a full-face solution designed to electrically isolate flanges and prevent galvanic corrosion in pipeline systems. This type of insulation kit offers complete coverage of the flange face, providing superior sealing and isolation for various industrial applications.