SUNWELL CHG
Seals and insulates at all pressure classed including API 15000 psi service;
Can mate mismatched RTJ with raise-face flanges;
Designed to withstand corrosive environments, Including high concentrations of CO2, H2S, produced water, etc
Easy installation, make up and removal
PDF Download- Specification
- You may also like
SUNWELL SEALS Supplying Range:
1"~60" available
Description:
SUNWELL SEALS CHG gasket material incorporates high-strength, glass reinforced epoxy laminated bonded to a stainless steel core.
This provides the strength of a traditional metallic gasket while maintaining complete electrical insulation between the flange faces.
Seal grooves are machined through the laminate insulating material and into the stainless steel core which provides a strong base for the seal to seat into and breaks the potential leak path that is inherent in glass laminate materials. Spring energized Teflon internal face seals are installed in the dovetail shape seal grooves to provide the reliable sealing.
Advantage and Benefits:
Extreme high-reliability sealing and insulating solution for all critical services. Seals and insulates at all pressures classed including API 15000 psi services
- Seals and insulates at all pressure classed including API 15000 psi service;
- Withstands severe service conditions including large bending moments, vibration, temperature and pressure cycling;
- Designed to withstand corrosive environments, including high concentrations of CO2, H2S, produced water, etc;
- Outstanding insulation properties for cathodic protection;
- Pressure-activated seals provide high confidence sealing and eliminate costly leaks;
- Gasket is sized to the bore to protect flange faces from media-induced corrosion and flow-induced erosion;
- Prevents turbulent flow at flanged connections;
- Mitigates galvanic corrosion in dissimilar metal flanges;
- Available to match any flange specification (ANSI, API, MSSP, BA, DIN, AS, Others);
- Can mate mismatched RTJ with raised-face flanges;
- Easy installation, make up and removal.
Materials:
1. Stainless Steel Core:
The standard stainless steel core is SS316L, special materials such as duplex steel, inconel stainless steel are can be made according to your requirements.
2. Glass Reinforced Epoxy:
The standard glass reinforced epoxy material is NAME G10, G11 is available when the temperature requirement is higher.
Specification between G10 Bonded and G11 Bonded:
| G10 Bonded | G11 Bonded | |
| Dielectric strength volts/mil | 550 | 550 |
| Compressive strength psi | 65,000 | 50,000 |
| Water absoprtion % | 0.05 | 0.085 |
| Flexural strength psi | 65,000 | 60,000 |
| Tensile strength psi | 50,000 | 45,000 |
| Operating Temp oF | -65 to +280 | -50 to +349 |
| Operating Temp oC | -54 to + 138 | -45 to +176 |
3. Seal
The standard sealing material is Spring Energized Teflon which suitable for most of working conditions. Meanwhile, the other materials like VITON also available
Temperatures of different sealing materials:
| Temperature | Nitrile | Viton | Teflon |
| Operating Temp oF | -40 to +250 | -20 to +350 | -320 to +450 |
| Operating Temp oC | -40 to +121 | -29 to +177 | -196 to +232 |
4. Sleeves
| ASTM | Test Method | Mylar | G10 |
| D149 | Dielectric Strength Volts/Mil Short Time | 1,100 | 775 |
| D570 | Water Absorption (%) | 0.8 | 0.05 |
| D790 | Flexural Strength (psi) | 13,000 | 65,000 |
| Operating Temperature | -75 to +302oF (-59 to +150oC | Cryogenic to 302oF (150oC) |
5. Washers:
| ASTM | Test Method | G10 | G11 | G3 | Phenolic | Steel (HC) |
| D149 | Dielectric Strength Volts/Mil Short Time | 750~800 | 520 | 500 | 500 | 750~800 |
| D695 | Compressive Strength (psi) | 65,000 | 50,000 | 55,000 | 25,000 | - |
| D570 | Water Absorption (%) | 0.05 | 0.1 | 0.1 | 1.6 | - |
| Operating Temperature | Cryogenic to 302oF(150oC) | -100 to +392oF (-73 to +200oC) | -100 to +392oF (-73 to +200oC) | -65 to +220oF (-54 to +104oC) | -100 to +392oF (-73 to +200oC) |
Standard SUNWELL SEALS CHG description when you ordering:
NPS + CLASS + MTL (G11 + TES + G11 + G11 + ZPS) + Standard + Qty
(G11 + TES + G11 + G11 + ZIP) = Gasket + Seals + Sleeves + Washers + Metal Washers
Gasket Type | E or F |
| Gasket Material | Glass Reinforced Epoxy (G-10) Bonded to SS316L Core |
| Seal | Spring Energized Teflon Seal |
| Gasket Thickness | 0.250" |
| Sleeves | G-10 or Mylar |
| Washers (Double) | G-10, Carbon Steel Zinc Plated, Hardened Steel, Teflon Coated |
