FLANGE ISOLATION GASKET KITS
Flange Isolation Gasket Kits are designed to maintain the integrity and reliability of the pipeline and piping system through safety and corrosion protection.
Flange Isolation Gasket Kits provide an effective seal and electrical isolation of flanges. By eliminating metal to metal contact, static current is halted to prevent corrosion and aid in the cathodic protection of the pipe.
Constructed of high quality materials that have a high dielectric constant and low water absorption, our Flange Isolation Gasket Kits are available for all size flanges, ranging from 1/2″ to 144″ in all ANSI and API classes.
In addition, utilizing Flange Band Protectors in conjunction with flange insulation kits further enhances reliability and reduces risk. Drake flange protectors seal the flange internals to prevent foreign objects or debris from lodging between the flanges, forming a bridge, creating a short, and compromising the entire cathodic protection system.
Ordering the correct Flange Isolation Gasket Kit requires knowing the specifications and type of service for your particular application.
- Flange size and pressure rating
- Fluid Service & Temperature
- Nominal Pipe Size
- Gasket type D, E, F, O / Face type (such as raised face, full face, etc.)
- Gasket material
- Sealing element (if required)
- Single or double washer set
- Backup washer material
- Sleeve material
*Consult factory for special applications
Packaging: Each package is labeled with flange size and pressure rating, type of materials and if double or single washer set.The washers are separate from the actual gasket in order to prevent damage to the gasket itself. Individually packaged kits in pizza style boxes are available upon request only.
Gasket Kit Types
Type F “Raised Face” gaskets will fit only on the raised face surface of the flanges. The outside diameter of an F style gasket is slightly less than the inside diameter of the bolt circle.
It is recommended that the flanges be wrapped with Flange Band Protectors available from Drake Specialties or a similar device to prevent foreign material from collecting and creating a bridge, thus shorting out the cathodic isolation.
Type F gaskets are available in phenolic, neoprene-faced phenolic, and high temperature materials.
Our Type E “Full Face” Gasket style kit contains a full-face gasket that has the same outside diameter as the flanges.
This style of gasket will prevent foreign material from collecting and creating a bridge in the flange which would short out the cathodic isolation.
Type E gaskets are available in phenolic, neoprene-faced phenolic, and high temperature materials.
Type D gaskets are designed to fit into the ring groove of RTJ (ring type joints) flanges.
We also offer BX gaskets.
Both are available in grade CE phenolic, G-10, and High temperature G-3.
Type O Gaskets have a sealing element on each side of the gasket and are available in both Type E and Type F styles.
The sealing element materials are Nitrile, Viton, or PTFE.
Type O Gaskets are made of both phenolic and G-10, and High temperature G-3 materials.