Durlon® iGuard™ 7910
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™ 7910: The iGuard™ 7910 style isolation gasket is manufactured from aramid/inorganic fiber material specifically developed to meet the requirement of NSF/ANSI 61 (Certification for water treatment products that are manufactured, distributed, or sold in North America) for potable water application 23°C (73°F) to commercial hot 82°C (180°F). This kit comes standard with one 3mm (1/8”) thick genuine iGuard™ 7910 gasket, two isolating Nema grade G-10 washers, two SAE zinc plated steel backup washers, and one Nema grade G-10 sleeve tube for every bolt/stud. Maximum pressure class – 300#ANSI.
The standard iGuard™ kit consists of a gasket, isolating washers and isolating bolt/stud sleeves. The gasket/carrier can be constructed of plain phenolic, neoface phenolic, epoxy glass (G-3, G-10 or G-11), epoxy glass (G-10) bonded to 316SS core, Durlon® 7910, 8400, 8500 or 9000. In gaskets with phenolic or glass carrier rings, the double-ogre sealing element provides a reliable concentrated unit load on the flanges using the lowest torquing conditions possible. For other styles, a spring energized PTFE sealing element is used.
|Neo-Faced Phenolic G-3|
|Silicone Glass G-7|
|Epoxy Glass G-10|
|Epoxy Glass G-11|
|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|