Now NSF 61 Certified
The IsoGuard™ sealing/isolating gasket system is designed for general applications where electrical flange isolation and corrosion control are required on pipes containing water/wastewater, gas, natural gas, oil and other hydrocarbon based medias up to 302ºF(150ºC). Available for flat face, raised face and ring type joint flanges from 1/2" to 48", ANSI 150-1500# and API 2-5K, the IsoGuard™ gasket is an engineered value added solution for trouble free operation. The IsoGuard™ sealing/isolating gasket system consists of a retainer with an incline-plane seal groove geometry designed to optimize each seal's elastic memory, in conjunction with a proven rectangular sealing element ("Quad" ring). This design guarantees low bolt load requirements and high sealing reliability. IsoGuard™ systems are available with a variety of retainers and seal elements.
A Fresh Look at Sealing - Design Feature: A non-spliced (one-piece) Teflon seal element, available from 1/2" to 24". Combining this seal with the incline-plane groove design is a first for this generation of gasket technology; an excellent choice for engineers and end users wanting increased seal integrity.
The flange face makes initial/light contact with the gasket retainer surface (isolation material) and the sealing element protrudes just above the gasket retainer surface.
Rectangular Sealing Element "Quad Seal" in conjunction with the incline plane provides a self-energized
seal. The small gap between seal element and retainer illustrates how the incline plane allows the seal
material to move in a direction other than point loading the gasket web (small area of retainer between
the two seals). This movement prevents cracking and breaking of the gasket retainer under high loads.
Dielectric Strength Volts/Mil Short Time
Compressive Strength (psi)
Water Absorption (%)
Flexural Strength (psi)
IZOD Impact Strength (Ft-lbs/Inch
Tensile Strength (psi)
Shear Strength (psi)
Bond Strength (lb)
Temperature - Operating
Cryogenic -238°F (-150°C) to +302°F (+150°C)
-100°F (-73°C) to +392°F (+200°C)
+65°F (-54°C) to +220°F (+104°C)
NOTE: Operating Temperature for Gaskets and Flange Isolation Kits is based off the Gasket Retainer Temperature. Seal element temperature does not dictate the min. and max. gasket operating temperature.
Temperature - Operating
Cryogenic to +525°F (+274°C)
-40°F (-40°C) to +250°F (+121°C)
-75°F (-115°C) to +392°F (+200°C)
-20°F (-29°C) to +392°F (+200°C)
-65°F (-54°C) to +250°F (+121°C)
Type "E" Gasket
Type "F" Gasket
"E" or "F" Type Gaskets
Single Washer Set
Double Washer Set
Suggested Sleeve/Washer Sets
SD = Standard (G10 Sleeves, Steel Zp Washers and G10 Washers) - Double Washer Set
ED = Economy (Mylar Sleeves, Steel ZP Washers and Phenolic Washers) - Double Washer Set
Based in industry proven design.
Enhanced with innovative engineered features.
Lamons cycled tested at 10,000 psi at ambient temperature.
100% made in the USA.
Tested to Shell Certification Standards.
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