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The Defender™ sealing/isolating gasket system is designed for critical/extreme applications.
Description
The Defender™ sealing/isolating gasket system is designed for critical/extreme applications. Manufactured with a 316 stainless steel core retainer and laminated on both sides with high strength laminates,the Defender™ gasket is resistant to deforming under load and is used when electrical isolation and corrosion control are required on pipes containing gas, natural gas, oil and other hydrocarbon based medias up to 392ºF (200ºC).
Available for flat face, raised face and ring type joint flanges from 1/2" to 36", ANSI 150-2500# and API 2-10K, the Defender™ gasket is an engineered solution for trouble-free operation that eliminates costly leaks and provides a solution for fugitive emissions. It is manufactured with an innovative industry first Press-n-Lock™ "Glue-Less Seal & Groove Technology" that combines a press-in, pressure activated and spring energized seal with a unique groove that retains the seal element without the use of glue on key contact surfaces! The Press-n-Lock feature provides a higher confidence in sealing.
Defender Gaskets are laser engraved with company name/logo, date of manufacture, and product description/part number.
The flange face makes initial contact with the sealing element which protrudes above the gasket retainer surface (isolation material) laminated on both sides of the stainless steel core.
The spring energized, pressure activated sealing system is initiated. The base of the Teflon® seal is contained within the stainless steel core to provide superior sealing strength for critical/extreme sealing applications. The spring prevents over-compression of the Teflon® seal thereby allowing the pressure of the media within the pipe to activate the seal. G10 or G11, laminated on both sides, provides the dielectric strength needed to isolate the flange application and has the compressive strength to easily withstand high bolt loads.
Features
Seals/isolates pressure ratings through ANSI 2500 and API 10,000 psi service.
Spring energized seal element.
Press-n-Lock™ "Glue-Less Seal Groove Technology".
APPLICATIONS
Defender gaskets were engineered for extreme, high reliability sealing and electrical isolation critical service applications.
High Pressure Flanges: 2500# or API 10K.
Critical/Extreme service.
High Ph service.
pS/CO2 service.
Locations where end users prefer an integral seal element.
MEDIA
Ethanol
Ethylene
Fuel Oil
Natural Gas
Sour Gas
Gasoline
Crude Oil
Propane
Nitrogen
Butane
Diesel
Methane
Hydrocarbons
Hydrogen Sulfide
Carbon Dioxide
INDUSTRIES
Oil
Gas
Production Fields, Petroleum Marketing Facilities, LNG/SNG Systems, Pipeline and Distribution Piping, Refineries
OTHER INFORMATION
Specifications
RETAINER MATERIALS (G10S, G11S)
1/4" (0.250") total thickness
Metal Core 0.120" thick = 316SS
Laminate 0.065" per side
GASKET/RETAINER MATERIAL SPECIFICATIONS
ASTM
TEST METHOD
G10S
G11S
D149
Dielectric Strength Volts/Mil Short Time
750-800
550
D695
Compressive Strength (psi)
65,000
63,000
D570
Water Absorption (%)
0.05
0.10
D790
Flexural Strength (psi)
65,000
60,000
D256
IZOD Impact Strength (Ft-lbs/Inch
14.0
12.0
D638
Tensile Strength (psi)
50,000
42,000
D732
Bond Strength (lb)
2,600
2,200
Temperature - Operating
Cryogenic -238°F (-150°C) to +302°F (+150°C)
-100°F (-73°C) to +392°F (+200°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
Viton®
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)
Viton®
-20°F (-29°C) to 392°F (+200°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 In general, 99% of Steel Core Gasket Applications are type "F", no bolt holes. The Defender gasket is also available in a Type "E" configuration.
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 SET
SD = Standard (G10 Sleeves, Steel Zp Washers and G10 Washers) - Double Washer Set
Description
The Defender™ sealing/isolating gasket system is designed for critical/extreme applications. Manufactured with a 316 stainless steel core retainer and laminated on both sides with high strength laminates,the Defender™ gasket is resistant to deforming under load and is used when electrical isolation and corrosion control are required on pipes containing gas, natural gas, oil and other hydrocarbon based medias up to 392ºF (200ºC).
Available for flat face, raised face and ring type joint flanges from 1/2" to 36", ANSI 150-2500# and API 2-10K, the Defender™ gasket is an engineered solution for trouble-free operation that eliminates costly leaks and provides a solution for fugitive emissions. It is manufactured with an innovative industry first Press-n-Lock™ "Glue-Less Seal & Groove Technology" that combines a press-in, pressure activated and spring energized seal with a unique groove that retains the seal element without the use of glue on key contact surfaces! The Press-n-Lock feature provides a higher confidence in sealing.
Defender Gaskets are laser engraved with company name/logo, date of manufacture, and product description/part number.
The flange face makes initial contact with the sealing element which protrudes above the gasket retainer surface (isolation material) laminated on both sides of the stainless steel core.
The spring energized, pressure activated sealing system is initiated. The base of the Teflon® seal is contained within the stainless steel core to provide superior sealing strength for critical/extreme sealing applications. The spring prevents over-compression of the Teflon® seal thereby allowing the pressure of the media within the pipe to activate the seal. G10 or G11, laminated on both sides, provides the dielectric strength needed to isolate the flange application and has the compressive strength to easily withstand high bolt loads.
Features
Seals/isolates pressure ratings through ANSI 2500 and API 10,000 psi service.
Spring energized seal element.
Press-n-Lock™ "Glue-Less Seal Groove Technology".
APPLICATIONS
Defender gaskets were engineered for extreme, high reliability sealing and electrical isolation critical service applications.
High Pressure Flanges: 2500# or API 10K.
Critical/Extreme service.
High Ph service.
pS/CO2 service.
Locations where end users prefer an integral seal element.
MEDIA
Ethanol
Ethylene
Fuel Oil
Natural Gas
Sour Gas
Gasoline
Crude Oil
Propane
Nitrogen
Butane
Diesel
Methane
Hydrocarbons
Hydrogen Sulfide
Carbon Dioxide
INDUSTRIES
Oil
Gas
Production Fields, Petroleum Marketing Facilities, LNG/SNG Systems, Pipeline and Distribution Piping, Refineries
OTHER INFORMATION
Specifications
RETAINER MATERIALS (G10S, G11S)
1/4" (0.250") total thickness
Metal Core 0.120" thick = 316SS
Laminate 0.065" per side
GASKET/RETAINER MATERIAL SPECIFICATIONS
ASTM
TEST METHOD
G10S
G11S
D149
Dielectric Strength Volts/Mil Short Time
750-800
550
D695
Compressive Strength (psi)
65,000
63,000
D570
Water Absorption (%)
0.05
0.10
D790
Flexural Strength (psi)
65,000
60,000
D256
IZOD Impact Strength (Ft-lbs/Inch
14.0
12.0
D638
Tensile Strength (psi)
50,000
42,000
D732
Bond Strength (lb)
2,600
2,200
Temperature - Operating
Cryogenic -238°F (-150°C) to +302°F (+150°C)
-100°F (-73°C) to +392°F (+200°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
Viton®
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)
Viton®
-20°F (-29°C) to 392°F (+200°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 In general, 99% of Steel Core Gasket Applications are type "F", no bolt holes. The Defender gasket is also available in a Type "E" configuration.
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 SET
SD = Standard (G10 Sleeves, Steel Zp Washers and G10 Washers) - Double Washer Set
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Type "F" Gasket
