Advantages:
The design of LPG incorporated overlapping and offsetting seal grooves. The purpose of this design is to break each layer of laminate within the seal itself there by creating a barrier through which fluid and/or gas cannot migrate. The sealing element can be any elastomeric material as well as more sophisticated Spring-Energized Teflon seals. As a result of this advanced seal design, maintenance free flange isolation and flange face corrosion mitigation are achieved economically.
The LPG is available in both full-face (Type E) and ring style (Type F)configurations. Depending upon the sealing element selected, the LPG is rated for most all hydrocarbon and water service applications.

Materials:
Retainer Material
1) G-10 Glass-Reinforced Epoxy (GRE)laminate:
Compressive Strength: 65,000 PSI 
Dielectric Strength: 750-800 VPM 
Max.Continuous Operating Temp: 300 degrees F (150 degrees Celsius) 
Water Absorption: .05% 
Flexural Strength: 65,000 PSI 
Tensile Strength: 50,000 PSI 

2) G-11 Glass-Reinforced Epoxy (GRE) HighTemp. laminate material:
Compressive Strength: 50,000 PSI 
Dielectric Strength: 500 VPM 
Max.Continuous Operating Temp: 398 degrees F (200 degrees Celsius) 
Water Absorption: .085% 
Flexural Strength: 57,700 PSI 
Tensile Strength: 41,000 PSI 

Seal Material

• PTFE (Spring-Energized)
  

• Viton
  

• Nitrile
  

• EPDM

Isolating Sleeve 

• GRE
  

• Mylar
  

• NOMEX 
  

Isolating Washers 

• GRE - G10/G11
  

Steel Washer 

• ZPS (Zinc plated Carbon Steel)
  

• XPS (Xylan coated Carbon Steel) 
  

• SS (Stainless Steel)