Low Torque Gaskets

Low Torque Flange Gasket – The Full Port Flange Gasket

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Excellent fro 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)

 

 

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.

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