Durlon® iGuard™ EN

Durlon® iGuard™ flange Isolation and sealing systems consist of all the necessary components to seal and electrically isolate between flanges, from general service to severe service applications. Gaskets are available in Raised Face (Type F), Full Face (Type E) and RTJ (Type D) flanges from NPS 1/2” (DN15) to NPS 144” (DN 3600) or equivalent, to meet all international piping sizes.

iGuard™ EN: The iGuard™ EN style isolation gasket is manufactured from Nema grade G-10/FR-4 glass epoxy material incorporating a Viton double-ogee sealing element. This kit comes standard with one iGuard™ EN gasket, two isolating Nema grade G-10 washers, two SAE Zinc plated backup washer, and one Nema grade G-10 sleeve tube for every bolt/stud. Maximum pressure class - 2,500# ANSI, 10,000# API.

Category: Flange Isolation Kits

Durlon® iGuard™ flange Isolation Kits are available for the following applications: Oil & Gas, Pulp & Paper, Petro Chemical, Refining, Water & Wastewater, Food & Beverage, Marine, Aerospace and LNG.

Carrier	Sealing Element
Carrier	Nitrile	EPDM	Viton	PTFE
Plain Phenolic
Neo-Faced Phenolic G-3
Silicone Glass G-7
Epoxy Glass G-10
Epoxy Glass G-11
Durlon® 7910
Durlon® 8400
Durlon® 8500
Durlon® 9000

ASTM	Properties	7910	8400	8500	9000	Mylar	Plain Phenolic	Nitrile Phenolic	Virgin PTFE Teflon	Hi-Temp Phenolic G-3	Silicone Glass G-7	Epoxy Glass G-10	Epoxy Glass G-11	Critical Service CS
D149	Dielectric Strength, volts/Mil	279	371	297	406	400	500	500	285	550	350-400	550	550	488
D695	Compressive Strength, psi	–	–	–	–	–	25,000	25,000	3,500	50,000	40,000	50,000	50,000+	80,000
D229	Water Absorption, %	–	–	–	–	–	1.60	1.60	<.01	0.70	0.07	0.10	0.10	0.08
D257	Insulation Resistance, MegOhms	–	3.1 x 10^7	4.2 x 10^7	0.1	–	40,000	40,000	>10^18	46,000	2,500	200,000	200,000	200,000
D790	Flexural Strength, psi	–	–	–	–	–	22,500	22,500	72,000	60,000	27,000	60,000	75,000+	77,000
D256	IZOD Impact Strength, Ft-Lbs/in	–	–	–	–	–	1.2	1.2	3.5	12	8	14	12	9.1
D229	Operating Temp °F	-100 to 500	-100 to 554	-100 to 548	-350 to 500	100 to +490	-65 to +250	-65 to +175	-350 to +500	-200 to +340	-200 to +430	Cryogenic to +284	Cryogenic to +356	Cryogenic to +500
D229	Operating Temp °C	-73 to 260	-73 to 290	-73 to 287	-212 to 260	-75 to 255	-54 to +104	-54 to +79	-212 to +260	-129 to +171	-129 to +221	Cryogenic to +140	Cryogenic to +180	Cryogenic to +260

Durlon® iGuard™ EN

United States

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