Defender by Lamons
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.
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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
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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
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ASTM |
TEST METHOD |
G10S |
G11S |
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D149 |
Dielectric Strength Volts/Mil Short Time |
750-800 |
550 |
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D695 |
Compressive Strength (psi) |
65,000 |
63,000 |
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D570 |
Water Absorption (%) |
0.05 |
0.10 |
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D790 |
Flexural Strength (psi) |
65,000 |
60,000 |
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D256 |
IZOD Impact Strength (Ft-lbs/Inch |
14.0 |
12.0 |
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D638 |
Tensile Strength (psi) |
50,000 |
42,000 |
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D732 |
Bond Strength (lb) |
2,600 |
2,200 |
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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
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Sealing Element |
Temperature - Operating |
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Teflon® |
Cryogenic to +525°F (+274°C) |
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Nitrile |
-40°F (-40°C) to +250°F (+121°C) |
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Viton® |
-20°F (-29°C) to 392°F (+200°C) |
CONFIGURATIONS FOR GASKET TYPE AND SLEEVE AND WASHER SETS
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"E" or "F" Type Gaskets |
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Single Washer Set |
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Double Washer Set |
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SUGGESTED SLEEVE/WASHER SET |
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SD = Standard (G10 Sleeves, Steel Zp Washers and G10 Washers) - Double Washer Set |
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Type "F"
