GPT (PSI) Flange Isolating Kits

GPT flange isolation products are constructed of premium engineering materials. This isolation product includes a wide selection of isolation/sealing gaskets along with a variety of sleeves and washers. For maximum flexibility, components may be ordered separately or as part of complete flange isolation kits.

Flange Isolation Kits are designed to work in conjunction with our isolating gaskets to effect the complete electrical isolation of a flanged assembly. The Isolation Kits consist of one full-length isolating sleeve, two isolating washers and two steel washers for each of the bolts in the flange assembly. The purpose of the isolating sleeves is to electrically separate the bolts from each side of the flange, while the isolating washers provide electrical isolation for each of the nuts attached to the bolts. This method of isolation provides the user with a high-reliability solution to complete the electrical isolation of a flanged joint.

How to Order:

Nominal Pipe Size
ANSI Class: 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
Gasket Type: E = With Bolt Holes, F = Ring (No Bolt Holes), D = For RTJ Flanges
Gasket Style: GS = GasketSeal®, LB = LineBacker®, NP = Neoprene Faced Phenolic, PP = Plain Phenolic, RD = Red Devil, YJ = Yellow Jacket, GL = Garlock, TF = Teflon®

GasketSeal Sealing/Isolating System:

Flange Isolation Kits consist of an isolating gasket and isolating sleeves and washers which are all correctly sized for the application and conveniently packaged to minimize the possibility of lost component parts during installation isolating gaskets may be specified as either "E" or "F" type while single, double or one-piece sleeve and washer sets are offered as options for varying degrees of electrical isolation between the flanges. In addition, a wide variety of material options exist for both isolating gaskets and sleeve and washer materials.

The Gasket:

GasketSeal sealing gaskets are considered to be one of the most effective methods for sealing mating surfaces of all types. The gasket consists of two molded half "O" rings (with precise crown to void ratio) mounted in grooves on opposite sides of a retainer.

While maintaining all the advantages of a full "O" ring seal, the half "O" rings eliminate the need to sealing grooves in the mating surfaces which also eliminates positioning and alignment concerns. GasketSeal gaskets are available in a wide variety of retainer and sealing element combinations for matching gaskets to service and environmental conditions.

Before Tightening:

The flange faces come into contact with the crown of the sealing elements. As the flange is tightened the crowns are compressed into the molded-in voids in the sealing elements, resulting in a seal that will maintain positive, dynamic contact against the flange faces under all conditions.

After Tightening:

The flange faces have come into firm contact with the retainer, thus encapsulating the sealing elements within grooves and guarding them from exposure to external environments or internal media. At the same time, the elastic memory characteristics of the confined sealing elements results in zero "m" and "y" factors, making it possible to effect and maintain a positive seal at the lowest possible compressive load.

Type E Gasket:

The gasket retainer extends out to the O.D. of the flange. Holes are cut in a type "E" gasket at the bolt circle to accommodate threaded studs or bolts.

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GPT (PSI) Flange Isolating Kits

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