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TASK-LINE® GasketsThe Original is Still the Best

TASK-LINE®

Overview

TASK-LINE® Design

Task-Line Gasket

Through a proprietary process, FDA approved, pure virgin PTFE resin is compression molded around and through a 304 stainless steel, perforated metal insert. After oven sintering, every gasket undergoes a 15,000-volt spark test to check for pinholes. The porous-free PTFE resin 100% encapsulates the stainless insert, isolating it from any fluid contact while in service.

No More Fabrication; Easy Installation

TASK-LINE gaskets are molded to size, 1/2" through 24" in class 150# and 300# ANSI ratings with a thickness of 1/8 " or 3/32 " (other thicknesses available upon request). Installation is quick and simple. TASK-LINE gaskets are self-aligning and seat easily to any flange in almost any condition.

TASK-LINE® Benefits

TASK-LINE gaskets have a temperature range of cryogenic to 400°F (consult factory for higher temperatures) and are chemically resistant to: all acids, all chlorides, all sulfates, all bleach solutions, all solvents, all phenols, all caustics, and all peroxides. TASK-LINE gaskets are leak-free and bubble-tight and can be used over and over without sacrificing sealing ability. TASK-LINE gaskets have zero corrosion rates which contribute to lower life-cycle costs when compared to envelope or solid gasket types.

TASK-LINE® Advantages

  • Maximum protection
  • Zero corrosion rate
  • No retorquing after installation
  • Blowout protection
  • No fabrication or waste
  • Reusable
  • Non-porous
  • Seats easily / releases easily
  • Cryogenic to +400°F (204°C)

Performance

Pressure-Temperature
Limits

Task-Line Pressure-Temperature Limits

In terms of performance and longevity, nothing comes close. When installed between two flanges, the PTFE encapsulated metal insert restricts the PTFE from cold flow/creep while under load. The metal insert prevents radial flow of the gasket which eliminates bolt retorquing after installation, maintaining a tight seal even through repeated temperature cycles. The strength of the metal insert also provides critical, blowout-proof protection. Another benefit of TASK-LINE gaskets is the PTFE's non-stick property which allows it to easily release from flanges during disassembly without any scraping.

TASK-LINE Gaskets Sizing Table and Part Numbers
  Other sizes available upon request.
Size
(in)
Part Number
(150# Flange)
ID × OD Part Number
(300# Flange)
ID × OD
1/2 TLG0050 .590 × 1.875 3TLG0050 .590 × 2.125
1/2 ANSI ATLG0050 .840 × 1.875 A3TLG0050 .840 × 2.125
3/4 TLG0075 .750 × 2.250 3TLG0075 .750 × 2.625
3/4 ANSI ATLG0075 1.080 × 2.250 A3TLG0075 1.060 × 2.625
1 TLG0100 1.030 × 2.625 3TLG0100 1.030 × 2.875
1 ANSI ATLG0100 1.310 × 2.625 A3TLG0100 1.310 × 2.875
1-1/4 TLG0125 1.375 × 3.000 3TLG0125 1.375 × 3.250
1-1/4 ANSI ATLG0125 1.660 × 3.000 A3TLG0125 1.660 × 3.250
1-1/2 TLG0150 1.590 × 3.375 3TLG0150 1.500 × 3.750
1-1/2 ANSI ATLG0150 1.910 × 3.375 A3TLG0150 1.900 × 3.750
2 TLG0200 2.060 × 4.125 3TLG0200 2.060 × 4.375
2 ANSI ATLG0200 2.375 × 4.125 A3TLG0200 2.375 × 4.375
2-1/2 TLG0250 2.470 × 4.875 3TLG0250 2.470 × 5.125
2-1/2 ANSI ATLG0250 2.875 × 4.875 A3TLG0250 2.875 × 5.125
3 TLG0300 3.060 × 5.375 3TLG0300 3.060 × 5.875
3 ANSI ATLG0300 3.500 × 5.375 A3TLG0300 3.500 × 5.875
4 TLG0400 4.000 × 6.875 3TLG0400 4.000 × 7.125
4 ANSI ATLG0400 4.500 × 6.875 A3TLG0400 4.500 × 7.125
5 TLG0500 5.030 × 7.750 3TLG0500 5.030 × 8.500
5 ANSI ATLG0500 5.560 × 7.750 A3TLG0500 5.560 × 8.500
6 TLG0600 6.000 × 8.750 3TLG0600 6.000 × 9.875
6 ANSI ATLG0600 6.625 × 8.750 A3TLG0600 6.625 × 9.875
8 TLG0800 8.000 × 11.000 3TLG0800 8.000 × 12.125
8 ANSI ATLG0800 8.625 × 11.000 A3TLG0800 8.625 × 12.125
10 TLG1000 10.000 × 13.375 3TLG1000 10.000 × 14.250
10 ANSI ATLG1000 10.750 × 13.375 A3TLG1000 10.750 × 14.250
12 TLG1200 12.000 × 16.125 3TLG1200 12.000 × 16.625
12 ANSI TLG1200 12.750 × 16.125 ATLG1200 12.750 × 16.625
14 TLG1400 13.250 × 17.750 3TLG1400 13.250 × 19.125
14 ANSI ATLG1400 14.000 × 17.750 A3TLG1400 14.000 × 19.125
16 TLG1600 15.500 × 20.250 3TLG1600 15.500 × 21.25
18 TLG1800 17.500 × 21.625 3TLG1800 17.500 × 23.500
20 TLG2000 19.250 × 23.875 3TLG2000 19.250 × 25.750
24 TLG2400 23.250 × 28.250 3TLG2400 23.250 × 30.500

ASTM A193 Gr. B7 Lubricated Bolt
ASTM A194 Gr. 2H Nut
Friction factor = 0.13

TASK-LINE Torque Guidelines - Class 150
  Other sizes available upon request.
Size Bolting Required Min. Torque (Ft-Lb) Nominal Torque (Ft-Lb) Max Torque (Ft-Lb) Bolt Yield
Torque (Ft-Lb)*
1/2" (4X) 1/2"-13 25 40 60 112
3/4" (4X) 1/2"-13 25 40 60 112
1" (4X) 1/2"-13 30 45 60 112
1-1/4" (4X) 1/2"-13 30 45 60 112
1-1/2" (4X) 1/2"-13 30 45 60 112
2" (4X) 5/8"-11 40 60 90 218
2-1/2" (4X) 5/8"-11 40 60 90 218
3" (4X) 5/8"-11 60 80 90 218
4" (4X) 5/8"-11 45 60 90 218
6" (8X) 3/4"-10 90 140 150 384
8" (8X) 3/4"-10 160 180 190 384
10" (12X) 7/8"-9 220 240 270 614
12" (12X) 7/8"-9 220 240 270 614
14" (12X) 1"-8 365 380 450 914
16" (12X) 1"-8 365 400 450 914
18 (16X) 1-1/8"-7 530 560 640 1272
20 (16X) 1-1/8"-7 480 530 640 1272
24 (20X) 1-1/4"-7 670 700 800 1900
TASK-LINE Torque Guidelines - Class 300
  Other sizes available upon request.
Size Bolting Required Minimum Torque (Ft-Lb) Nominal Torque (Ft-Lb) Maximum Torque (Ft-Lb) Bolt Yield Torque (Ft-Lb)*
1/2" (4X) 1/2"-13 35 50 60 112
3/4" (4X) 5/8"-11 35 50 60 218
1" (4X) 5/8"-11 40 50 60 218
1-1/4" (4X) 5/8"-11 60 80 120 218
1-1/2" (4X) 3/4"-10 60 80 120 384
2" (8X) 5/8"-11 45 70 90 218
2-1/2" (8X) 3/4"10 50 80 120 384
3" (8X) 3/4"10 65 90 120 384
4" (8X) 3/4"10 80 115 150 384
6" (12X) 3/4"-10 60 80 120 384
8" (12X) 7/8"-9 140 155 180 614
10" (16X) 1"-8 165 210 350 914
12" (16X) 1-1/8"-7 250 275 400 1272
14" (20X) 1-1/8"-7 280 330 580 1272
16" (20X) 1-1/4"-7 420 480 800 1900
18 (24X) 1-1/4"-7 505 540 850 1900
20 (24X) 1-1/4"-7 530 565 1000 1900
24 (24X) 1-1/2"-6 720 755 1300 3416

* : Yield taken from root area of bolt

All torque values are based on the MAWP of 500 psig internal fluid pressure. If lower pressures are to be sealed, lower torque values are applicable.