Why Task-Line® Gasket is Different?

Introduction to Gasket

Gasket is a seal that fills the space between 2 or more in-contact surfaces to prevent leaks and spills from or into the surfaces while being compressed.

Gasket can be classified in many ways: by material, function, sector/industry. It is important to choose the right gasket for your application to avoid safety or equipment risk. To know more about gasket, read our blog: “Types of Gasketshere.

Introduction to Task-Line®

Task-Line® is a unique PTFE gasket with SS304 insert. Virgin PTFE is molded around and through SS304 perforated metal insert before goes through oven sintering. It is blowout-proof, creep-resistant and tightly seated (no bolt-retorquing). The metal filler enhances its hardness, compressive strength and dimensional stability, making Task-Line® is safer and more durable than the normal gasket.

In addition, Task-Line utilizes PTFE, one of the high-performance materials in the industry. PTFE protects flange joints from almost all aggressive chemical, providing maximum protection for your workers and equipment. Moreover, PTFE is non-stick, non-wettable, and thermal-resistant.

Task-Line® is manufactured in the U.S. and is designed to comply with a proprietary and FDA approval process. Every Task-line® gasket has undergone 15,000-volt spark test to ensure that they are pinholes free!

Summary of Task-Line®

Task-Line® is a PTFE gasket with a revolutionary design that resulted in various benefits such as:

  1. Durability

The SS304 insert provides a higher pressure rating that prevents tear when under pressure.

  1. Reusability

Task-Line® gaskets are leak-free and bubble tight and can be used over and over without sacrificing sealing ability. Furthermore, its high durability also supports its reusability.

  1. Chemical Resistant

Task-Line® gasket is chemically resistant to all acids, all chlorides, sulphates, bleach solutions, solvents, phenols, caustics and peroxides.

  1. Prevent Bolt Retorquing

The metal insert prevents radial flow of the gasket, makes it difficult for bolt retorquing to occur, hence maintaining a tight seal even through repeated temperature cycles. Moreover, the strength of the metal insert also provides a critical blowout-proof protection.

  1. Creep or Cold Flow Resistance

PTFE Encapsulated metal insert restricts the PTFE from cold flow/creep while under load. Giving itself a longer lifespan.

  1. Wide Temperature Range

Task-line® gaskets are stable enough for cryogenic use up to 400oF/204oC.

  1. Self-aligning and Self-Seating

Task-Line® offers quick and simple installation because it can self-align and seat easily to any flange in almost any condition.

  1. Non-Stick

Due to PTFE’s non-stick property, Task-Line® gasket can be released from flanges easily during disassembly without scraping.

Why Should We Use Task-Line®?

Wah Joo Seng’s Task-Line® is made to overcome many challenges that other gaskets face. See how it outperforms other gaskets that you might know.

Virgin PTFE Gasket vs Task-Line®

Gasket made from virgin PTFE
Virgin PTFE Gasket
Virgin PTFE Gasket versus Task-Line® Gasket

Task-Line® PTFE Gasket
Task-Line® PTFE Gasket

Virgin PTFE makes a wonderful gasket; but it lacks hardness, creep-resistance and pressure rating due to the lack of metal insert. Task-Line® Gasket offers all the benefits of blowout-proof protection, creep resistance and prevent bolt retorquing by including SS304 perforated metal insert.

Spiral Wound Gasket vs Task-Line®

Strip Wound Gasket
Spiral Wound Gasket
Other Gasket versus Task-Line® Gasket

Task-Line® PTFE Gasket
Task-Line® PTFE Gasket

Task-Line® gasket has better durability and reusability than spiral wound/stripwound gasket. This makes Task-Line® more economical since Spiral Wound gasket is only applicable for one-time usage.

Sheet Gasket vs Task-Line®

Sheet Gasket: Gasket made by sheet of material
Sheet Gasket
Other Gasket versus Task-Line® Gasket

Task-Line® PTFE Gasket
Task-Line® PTFE Gasket

Like virgin PTFE gasket, sheet gasket lacks metal insert hence it is more susceptible to blowout, bolt retorquing and cold flow/creep. However, they are still recommended for mild or low-pressure application.

Viton Gasket vs Task-Line®

Gasket Material Viton
Viton Gasket
Other Gasket versus Task-Line® Gasket

Task-Line® PTFE Gasket
Task-Line® PTFE Gasket

Task-Line® has a better versatility as it can cope with more chemicals than Viton gasket. However, PTFE and Viton are used for different application, it is recommended to check our chemical resistance chart here prior to using the gaskets.

Rubber/Plastic Gasket vs Task-Line®

Gasket made from rubber material
Rubber Gasket
Other Gasket versus Task-Line® Gasket

Task-Line® PTFE Gasket
Task-Line® PTFE Gasket

Rubber/Plastic is only applicable for mild application due to its low chemical resistance. Task-Line®, however, is far more superior than rubber/plastic gasket as it can handle aggressive chemicals such as chloride and sulphate acid.

Final Words

If you are interested in using Task-Line® gasket for any of your projects, they are available from size ½” to 6” in either 150# or 300# ANSI rating. We also offer the thickness of 1/8” or 3/32” (other thickness is available upon request). If you would like to find out more information, please contact us at enquiry@wahjooseng.com or (65) 62983211 for any enquiries.

Visit our website to see other hoses and couplings here.


Types of Gaskets

What is a Gasket?

Gasket is a mechanical seal which its primary function is to seal the irregularities or space between 2 or more in-contact surfaces to prevent leaks and spills from or into the surfaces while being compressed.

Gaskets come in many different shapes and forms. Fortunately, there are many ways to classify them into different categories. Below are the 3 categories that we use to classify gaskets:

Material Function Design
Rubber Gasket Sealing Gasket Full Faced
Cork Gasket Anti-Vibration Gasket Inner Bolt Circle
PTFE Gasket Mounting Gasket Segmented
Silicone Gasket Spiral Wound Gasket
Metal Gasket Kammprofile Gasket
Viton Gasket Fishbone Gasket
  Sheet Gasket
  Double-jacketed Gasket
  Constant-Seating Gasket

These classifications are important factors to consider when it comes to choosing the right gasket.

*Disclaimer: our method of classification might differ from other people. We recommend you use classification method that best suits you.

Gasket by Material

Gasket properties are inherited from the materials they are manufactured from. Below are the common types of gaskets based on its materials:

  1. Rubber Gaskets (Nitrile, EPDM, natural rubber)

Rubber is a tough elastic polymer made from natural or synthetic resources. It comes in different properties and applications based on its monomer. Below are some of the common rubber types used for gasket:

1.1. Nitrile Rubber

Nitrile Rubber is very popular in petroleum, automotive and other related industry for its fuel/oil resistance. Nitrile does not swell when reacted with oil.

1.2. EPDM Rubber

EPDM rubber is one of the toughest rubbers that suits outdoor environment because of its UV and environmental resistant. EPDM Rubber also has good resistance to nitrogen, potassium and sodium.

1.3. Natural Rubber

Natural rubber as gasket material
Natural rubber

Natural rubber has an outstanding physical property and is suitable for bulk material handling.

  1. Silicone Gaskets

Silicone (polysiloxanes) is a popular gasket in food and pharmaceutical industry due to its bacterial inhibition property. It can be supplied in different shapes and forms and has excellent heat resistance property.

  1. Cork Gasket
Gasket material cork

Cork has excellent flexibility and compressibility and is usually combined with elastomer bindings to enhance its properties. In addition, combining cork with rubber material, such as silicone or neoprene will result in good oil, solvent and fuel resistance.

  1. PTFE Gasket
Gasket Material PTFE
PTFE Gasket

PTFE (Poly Tetra Fluoro Ethena) is a high-performance polymer with excellent chemical resistance, non-stick, hydrophobic properties that make it applicable for wide range of industries. One special PTFE gasket that we are supplying is Task-Line® gasket. Check out why Task-Line® gasket is different here.

  1. Viton Gasket
Gasket Material Viton
Viton Gasket

Similar to PTFE gasket, Viton gasket is also suitable for a wide range of aggressive and corrosive chemical, making it a hard contestant to PTFE.  While viton gasket is a more economical choice than PTFE, their chemical resistance properties are not as exhaustive as PTFE.

  1. Solid Material/Metal Gasket
Gasket Material Metal
Metal Gasket

Solid material gasket utilizes solid material such as metal that seals tightly. It can withstand higher pressure and temperature.

Other materials that can be used as gasket are fiberglass, paper & non-asbestos.

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Gasket by Function

Gaskets can be categorized by their functions. Below are some common types of gaskets based on its functions:

  1. Sealing Gasket

1.1 Liquid Seal

This gasket should be able to seal and prevent liquid spill. Gasket and fluid compatibility check is important to properly seal the connection.

1.2 Environmental Seal

Gasket as environmental seals will guard against dust and other contaminants. Generally, this seal is used in enclosures such as electrical enclosure to protect control equipment from contamination.

  1. Anti-vibration Gasket

As an Anti-vibration, this gasket is made to reduce sound frequency and vibration energy for moving equipment.

  1. Mounting Gasket

Mounting gasket is made to protect sensitive display units from shock, ingress of dust or other particles that may include liquids.

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Gaskets by Design

Gasket comes in many different designs. Below are some common types of gaskets based on its designs:

  1. Full Faced Gasket
Gasket that covers the entire flange
Full-Faced Gasket

Full-face gasket is a gasket that covers the entire flange.

  1. Inner Bolt Circle Gasket
Gasket that cover the inner circle
Inner Bolt Circle Gasket

Inner Bolt Circle gasket is a ring type gasket that sits within the circle of the bolts.

  1. Segmented Gasket

Segmented gasket covers gasket with unusual shape and sizes. It is formed by joining 2 or more gaskets so that if it is compressed it will provide a continuous seal.

  1. Spiral Wound Gasket
Strip Wound Gasket
Spiral Wound Gasket

Spiral wound gasket is a metal strip gasket that is sandwiched between layer of non-metallic filler. Spiral Wound gasket has alternative spiral layers of thin metal sheet and filler material.

  1. Sheet Gasket
Gasket made by sheet of material
Sheet Gasket

Sheet gasket is made by shaping a sheet of material into the shape of the gasket. Sheet gasket is cheap and easy to make.

  1. Constant Seating Stress Gasket

Constant seating stress gasket is made from 2 components: a solid carrier ring and two sealing elements. The sealing elements are made from materials that are suitable to the process fluid and application.

  1. Double-Jacketed Gasket
Double Jacketed Gasket
Double Jacketed Gasket

Double-Jacketed gasket is formed by bending a sheet of metal into a “C” form and fills its inner part with filler material.

  1. Kammprofile Gasket
Kammprofile Gasket
Kammprofile Gasket

Kammprofile is a gasket with solid corrugated core and a flexible covering layer. Kammprofile has an expensive capital cost but has a long lifespan and high compression rate especially on its ridges.

  1. Fishbone Gasket
Fishbone Gasket
Fishbone Gasket

Fishbone gasket is a replacement for Kammprofile and Spiralwound gasket with a better design. It does not unwind in storage or in the plant and does not damage the flange.

Thank you so much for reading till the end. If you have any enquiries for us, please contact kingflex@wahjooseng.com or call (65) 6298 3211. If you are enquiring for something else, visit our main website here.

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