Low Torque EPDM Gaskets
Low Torque Teflon Gaskets
Low Torque Flange Gasket – The Full Port Flange Gasket
Excellent for Non Metallic Piping Systems… Reduce Flange Breakage
PVC, PP, CPVC, PVDF, FRP
Our Series LT , Low Torque Gaskets are Recommended for All Types of Non-Metal Piping Systems to Prevent Initial Flange 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 the EPDM core.
FEATURES:
- Industry’s only Full Port double O-Ring design for ½ to 12” Sch 40 and Sch 80 PVC, CPVC Piping systems
- Reduces Pressure Drop
- Less Turbulence= Longer Lasting
- Low Flange Bolt Torques Required for Positive Seal- Due to the Molded Raised Face-Patented double convex o-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
- Fully Molded
- Ring Tab for storage or Positioning during installation.
PTFE / EPDM
- SERIES: LT
- SIZES: EPDM/PTFE: 1/2″ to 12″
- CLASS: ANSI 150# FULL FACE
- Temp Range: EPDM: (-40° to 90°C) (-40° to 194°F) PTFE: (-40° to 121°C) (-40° to 250°F)
MATERIAL IDENTIFICATION TAB
EPDM = Solid EPDM
PTFE = PTFE (Teflon bonded EPDM)
DUROMETER (HARDNESS)
EPDM– Shore A: 65° + 3°
| DIMENSIONS: INCHES | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | D1 | D2 | D3 | d1 | d2 | n | e | T1 | T2 |
| 1/2″ | 3.43 | 2.38 | 0.71 | 1.61 | 1.02 | 4 | 0.63 | 0.12 | 0.16 |
| 3/4″ | 3.79 | 2.76 | 0.87 | 1.85 | 1.26 | 4 | 0.63 | 0.12 | 0.16 |
| 1″ | 4.17 | 3.13 | 1.18 | 2.09 | 1.50 | 4 | 0.63 | 0.12 | 0.16 |
| 1-1/4″ | 4.53 | 3.50 | 1.46 | 2.56 | 1.97 | 4 | 0.63 | 0.12 | 0.16 |
| 1-1/2″ | 4.92 | 3.88 | 1.69 | 2.72 | 2.13 | 4 | 0.63 | 0.12 | 0.16 |
| 2″ | 5.19 | 4.74 | 2.13 | 3.27 | 2.68 | 4 | 0.63 | 0.12 | 0.16 |
| 2-1/2″ | 6.93 | 5.49 | 2.72 | 3.98 | 3.39 | 4 | 0.63 | 0.12 | 0.16 |
| 3″ | 7.44 | 6.00 | 3.15 | 4.41 | 3.86 | 4 | 0.63 | 0.12 | 0.16 |
| 4″ | 8.94 | 7.50 | 4.02 | 5.43 | 4.72 | 4 | 0.63 | 0.12 | 0.16 |
| 5″ | 9.92 | 8.50 | 5.00 | 6.54 | 5.71 | 4 | 0.63 | 0.12 | 0.16 |
| 6″ | 10.91 | 9.51 | 5.91 | 7.48 | 6.61 | 4 | 0.63 | 0.12 | 0.16 |
| 8″ | 13.43 | 11.71 | 7.80 | 9.72 | 8.50 | 4 | 0.63 | 0.12 | 0.16 |
| 10″ | 15.91 | 14.25 | 9.80 | 12.05 | 10.63 | 4 | 0.63 | 0.12 | 0.16 |
| 12″ | 18.94 | 17.01 | 11.81 | 13.86 | 12.76 | 4 | 0.63 | 0.12 | 0.16 |
| RECOMMENDED BOLTS TORQUES1 FT-LB. WEIGHTS: LB. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | EPDM Working Pressure | PTFE Working Pressure | EPDM | PTFE | ||||||
| 85 psi | 142 psi | 228 psi | 250 psi2 | 85 psi | 142 psi | 228 psi | 250 psi2 | |||
| 1/2″ | 9.4 | 13.0 | 14.5 | 18.1 | 10.9 | 14.5 | 15.9 | 18.1 | 0.04 | 0.04 |
| 3/4″ | 9.4 | 13.0 | 14.5 | 18.1 | 10.9 | 14.5 | 15.9 | 18.1 | 0.05 | 0.05 |
| 1″ | 9.4 | 13.0 | 14.5 | 18.1 | 10.9 | 14.5 | 15.9 | 18.1 | 0.06 | 0.06 |
| 1-1/4″ | 10.9 | 13.8 | 16.7 | 21.7 | 13.0 | 15.9 | 18.8 | 21.7 | 0.08 | 0.08 |
| 1-1/2″ | 12.3 | 14.5 | 18.1 | 25.4 | 14.5 | 18.1 | 21.7 | 25.4 | 0.09 | 0.09 |
| 2″ | 12.3 | 14.5 | 18.1 | 25.4 | 14.5 | 18.1 | 21.7 | 25.4 | 0.12 | 0.12 |
| 2-1/2″ | 14.5 | 18.1 | 21.7 | 36.2 | 21.7 | 25.4 | 29.0 | 36.2 | 0.16 | 0.16 |
| 3″ | 14.5 | 18.1 | 21.7 | 36.2 | 21.7 | 25.4 | 29.0 | 36.2 | 0.18 | 0.18 |
| 4″ | 14.5 | 18.1 | 21.7 | 36.2 | 21.7 | 25.4 | 29.0 | 36.2 | 0.22 | 0.27 |
| 5″ | 18.1 | 21.7 | 25.4 | 43.5 | 25.4 | 29.0 | 36.2 | 43.5 | 0.28 | 0.34 |
| 6″ | 18.1 | 21.7 | 25.4 | 43.5 | 25.4 | 29.0 | 36.2 | 43.5 | 0.33 | 0.44 |
| 8″ | 21.7 | 25.4 | 29.0 | 58.0 | 29.0 | 36.2 | 43.5 | 58.0 | 0.44 | 0.51 |
| 10″ | 25.4 | 29.0 | 36.2 | 58.0 | 29.0 | 36.2 | 43.5 | 58.0 | 0.55 | 0.66 |
| 12″ | 29.0 | 36.2 | 43.5 | 58.0 | 36.2 | 43.5 | 50.7 | 58.0 | 0.81 | 0.99 |
1 Bolt torques are for flat face flanges
2 Maximum recommended torques are those listed for 250 psi service.