TVI Valves
Custom Valve Solutions
Lotorq LT Series Gaskets are recommended for all types of Non-Metal Plastic flanges to Prevent Initial Breakage due to Bolt Over-Tightening. The unique Double Convex Raised O-Ring Design provides Excellent Sealing with 75% Less Bolt torque required for flat face gaskets. The PTFE gaskets have PTFE sheet material bonded directly to EPDM
Unit of Measure



N/A Truflo®



Seal Material

N/A Ethylene Propylene Diene Monomer (EPDM) Polytetrafluoroethylene (PTFE)

Size (Ethylene Propylene Diene Monomer (EPDM))/(Polytetrafluoroethylene (PTFE))

N/A 1/2 to 12 in


N/A ANSI 150 Full Faced

Temperature Range (Ethylene Propylene Diene Monomer (EPDM))

N/A -40 to 90 ºC-40 to 194 ºF

Temperature Range (Polytetrafluoroethylene (PTFE))

N/A -40 to 121 ºC-40 to 250 ºF



  • Industry's Only Full Port Double O-Ring Design for 1/2" -12" Piping Systems
  • Reduces Pressure Drop
  • Location Tab-Eliminates pinched fingers
  • Low Flange Bolt Torques Required for Positive Seal - Due to the Molded Raised Face - Patented double convex Ring Design
  • Ideal for Thermoplastic Piping Systems, also Metal or Plastic Lined Metal Pipe Systems for up to 250 psi
  • Excellent Chemical Resistance - PTFE-bonded gaskets are Suitable for Extremely Aggressive Chemical Services.
  • Longer Gasket Life - Because Lower Flange Pressures are Required for Sealing. PTFE is Energized by EPDM Backing.
  • Low Torque - Raised O-Ring Design
  • Designed to Provide Positive Seal
  • No Over-Tightening Required
  • Reusable
  • Excellent for Non Metallic Piping Systems
  • Reduce Flange Breakage



N/A Sealing Made Simple