Pure PTFE Gasket

Pure PTFE Gasket

Core Features

  • 100% Virgin PTFE Resin: Fabricated from premium, non-recycled polytetrafluoroethylene (PTFE) to ensure maximum chemical purity and molecular integrity.
  • Universal Chemical Inertness: Resistant to almost all known chemicals, including concentrated acids, strong alkalis, and aggressive solvents (excluding molten alkali metals and elemental fluorine).
  • High-Purity & FDA Compliant: Naturally non-toxic and non-contaminating, meeting FDA 21 CFR 177.1550 requirements for use in food, beverage, and pharmaceutical processing.
  • Low Coefficient of Friction: Features a naturally “slick” surface that prevents the gasket from sticking to flange faces, making removal and maintenance significantly easier.
  • Wide Temperature Range: Reliable performance in environments ranging from cryogenic temperatures of -200°C up to a continuous operating temperature of +260°C.
  • Excellent Dielectric Properties: Acts as a superior electrical insulator, making it ideal for joints requiring electrochemical isolation or use in electronic housings.

At Kriloha Ltd., we understand that in the world of high-purity chemicals and pharmaceuticals, “cleanliness” is a mechanical requirement. When you are moving life-saving medicines or aggressive reagents, the gasket must be more than a barrier—it must be invisible to the process. The Kriloha Pure PTFE Gasket is our solution for ultimate chemical neutrality. As a premier global supplier of high-performance seals, Kriloha Gaskets utilizes only premium-grade virgin resins to ensure our PTFE gaskets never leach, flavor, or react with your media.

Pure PTFE is a unique engineering plastic. It possesses a high molecular weight that gives it an almost “wax-like” conformability. When compressed between flanges, the PTFE flows into the microscopic peaks and valleys of the metal, creating a hermetic seal. At Kriloha, we utilize a precision Sintering and Skiving process to ensure our PTFE sheets have a uniform density and a smooth, pore-free surface. This prevents “wicking,” where chemicals could otherwise soak into the gasket material over time.

While Pure PTFE is legendary for its chemical resistance, it does possess a mechanical trait known as Cold Flow (creep). Under high pressure or temperature, the material tends to spread outward. To manage this, Kriloha recommends Pure PTFE primarily for lower-pressure systems or flanges with a “tongue and groove” design that traps the material. For higher-pressure applications, we offer “Modified” or “Filled” PTFE versions. However, for 100% chemical purity and FDA-mandated environments, the Kriloha Pure PTFE Gasket remains the undisputed industry standard.

Primary Use Cases

  • Pharmaceutical & Biotech: The standard for high-purity piping systems where zero-leaching and easy sterilization are mandatory.
  • Chemical Processing: Handling high-purity acids (Sulfuric, Nitric, Hydrochloric) where metallic or rubber gaskets would be rapidly consumed.
  • Food & Beverage Production: Ensuring a clean, taste-neutral seal for dairy, brewing, and food processing equipment.
  • Cryogenic Gas Handling: Maintaining a flexible, gas-tight seal for liquid nitrogen, oxygen, and LNG transport lines.
  • Laboratory Equipment: Providing a chemically resistant seal for analytical instruments and specialized glassware.
  •  

FAQs

What is the difference between “Virgin” and “Mechanical” Grade PTFE?

Virgin PTFE is made from 100% new resin and is required for food and medical use. Mechanical grade often contains recycled material, which is cheaper but may have lower chemical resistance and cannot be used in high-purity applications. Kriloha uses only Virgin PTFE for our Pure PTFE line.

Can I use Pure PTFE on high-pressure steam?

While PTFE handles the temperature of steam, it is prone to “creep” under high pressure. For high-pressure steam, Kriloha recommends our Expanded PTFE or Carbon-Filled PTFE options which offer better resistance to cold flow.

Is PTFE safe for oxygen service?

Yes, PTFE is non-combustible and is widely used in oxygen systems. However, the gaskets must be specially cleaned and degreased to ensure they are “Oxygen Clean” before installation.

Do I need to use a sealant or grease with a PTFE gasket?

No. PTFE is naturally self-lubricating and conformable. Using greases can actually compromise the seal and contaminate high-purity systems.

How do I prevent “Cold Flow” in a Pure PTFE gasket?

Use the thinnest gasket possible for your application (e.g., 1.5mm instead of 3.0mm) and ensure you follow a precise torque sequence. Thinner gaskets have less material available to “creep” outward under load.

 

 

This is the heading

Lorem ipsum dolor sit amet consectetur adipiscing elit dolor

Request a Quote

Enter your details here

Great! We’ve received your information.

We couldn’t process your submission. Please retry

Scroll to Top

Get a Quote

Great! We’ve received your information.

We couldn’t process your submission. Please retry