Isoguard by Lamons

Description

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 FEATURES

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.

Furthermore, the incline plane groove provides the seal with greater elastic memory, thereby helping maintain an effective seal even when bolt load may relax over a period of time.

RETAINER MATERIALS (G10, G11, PHENOLIC)

1/8" (0.125") 3.18mm total thickness

Features

Features

Load-energizing seal.
Incline-plane groove geometry.
Low bolt load required.

APPLICATIONS

IsoGuard™ gaskets are engineered to provide high reliability sealing and electrical isolation for a wide variety of applications.
High Pressure Flanges: Up to 2500# or API 10K.
Applications where end users prefer an integral seal element.

INDUSTRIES

Water/Wastewater
Oil
Gas

MEDIA

Energy

Ethanol
Ethylene
Fuel Oil
Natural Gas
Sour Gas
Gasoline
Crude Oil
Propane
Nitrogen
Butane
Diesel
Methane
Hydrocarbons
Hydrogen Sulfide
Carbon DioxideM

Water

Sewage
Spent Liquor
Hot Water
Potable Water
Sea Water
Water

FACTS

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.

GENERAL INSTALLATION TIPS

Always use proper safety equipment.
Installation should be done with a torque wrench or stud tension measuring device.
User should inspect to determine that all components are as specified.
Flanges shall be free of pits, gouges, rust, debris, oil and grease. Surface finish shall be no greater than 250 RMS.
Check bolts and nuts to ensure they are clean.

OTHER INFORMATION

Specifications

Features

GASKET/RETAINER MATERIAL SPECIFICATIONS

ASTM	TEST METHOD	G10	G11	Phenolic
D149	Dielectric Strength Volts/Mil Short Time	750-800	550	500
D695	Compressive Strength (psi)	65,000	63,000	25,000
D570	Water Absorption (%)	0.05	0.10	1.60
D790	Flexural Strength (psi)	65,000	60,000	22,500
D256	IZOD Impact Strength (Ft-lbs/Inch	14.0	12.0	1.20
D638	Tensile Strength (psi)	50,000	42,000	20,000
D732	Shear Strength (psi)	21,000	21,000	10,000
D952	Bond Strength (lb)	2,600	2,200	1,500
	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.

SEAL ELEMENT MATERIALS

PTFE (Teflon®) Spring Energized. Spring is Stainless Steel.
Nitrile
Silicone
Viton®
EPDM

SEAL ELEMENT MATERIAL SPECIFICATIONS

Sealing Element	Temperature - Operating
Teflon®	Cryogenic to +525°F (+274°C)
Nitrile	-40°F (-40°C) to +250°F (+121°C)
Silicone	-75°F (-115°C) to +392°F (+200°C)
Viton®	-20°F (-29°C) to +392°F (+200°C)
EPDM	-65°F (-54°C) to +250°F (+121°C)

CONFIGURATIONS FOR GASKET TYPE AND SLEEVE AND WASHER SETS


Type "E" Gasket Fits over the bolt holes and extends to the O.D. of the flange to assist contractors as the bolt holes automatically center the gasket. Provides excellent protection against shorting out of the corrosion mitigation hardware.	Type "F" Gasket Fits within the bolt hole circle of the flange and extends to the I.D. of the bolt circle providing good protection against shorting out of the corrosion mitigation hardware.	"E" or "F" Type Gaskets The IsoGuard gasket is available in a Type "E" or "F" configuration to accommodate all your sealing/isolating needs.

		Single Washer Set One isolation sleeve, one steel washer and one insulating washer for each stud/bolt.
		Double Washer Set One isolation sleeve, two steel washers and two insulating washers for each stud/bolt.

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