Flexible Graphite Packing (PTFE Impregnated)

At Kriloha Ltd., we recognize that in modern fluid handling, “Sealing” and “Lubricity” must work in perfect harmony. While pure graphite is an elite thermal conductor, its fibrous nature can sometimes allow microscopic gas seepage. The Kriloha PTFE-Impregnated Graphite Packing is our engineered answer for high-purity and gas-tight containment. As a premier global provider of industrial sealing solutions, Kriloha Gaskets has mastered the Vacuum Impregnation process required to lock PTFE deep into the graphite yarns.

The engineering of this packing is based on Pore-Filling Technology. By saturating the graphite yarns with PTFE, we create a “Composite Braid” that behaves like a solid, yet flexible, barrier. At Kriloha, we ensure the PTFE dispersion is distributed evenly throughout the cross-section of the packing, not just on the surface. This ensures that as the packing wears down over thousands of hours of service, the self-lubricating and gas-sealing properties remain consistent.

[Image showing a cross-section of a graphite yarn with PTFE particles embedded in the fiber structure]

Manufacturing this packing at Kriloha involves strict Temperature and Pressure Monitoring during the braiding process. We offer this in various densities and dimensions to fit standard stuffing boxes perfectly. Whether you are sealing a high-speed chemical transfer pump or a sensitive process control valve, Kriloha PTFE-Impregnated Graphite Packing provides the mechanical agility and leak-proof stamina your facility demands. By choosing Kriloha Ltd., you are investing in a “Reduced-Friction” technology that saves energy and extends the life of your expensive rotating hardware.

Primary Use Cases

Centrifugal & Rotary Pumps: The premier choice for high-speed shafts handling chemicals, hot water, and solvents where low friction is critical.
Control Valves: Providing a smooth, non-jerky actuation for automated valves that require precise positioning.
Agitators & Mixers: Handling large-diameter shafts with potential “run-out” where a conformable, lubricated packing is needed.
Petrochemical Processing: Sealing volatile hydrocarbons and refined oils where gas-tight integrity is a primary safety requirement.
Paper & Pulp Industry: Resisting the “black liquor” and bleaching chemicals while maintaining a low-friction seal on processing equipment.

FAQs

Does the PTFE limit the temperature range of the graphite?

Yes. While pure graphite can handle 650°C, the PTFE impregnation begins to degrade around +260°C to +280°C. For applications exceeding this temperature, Kriloha recommends our Flexible Graphite Packing (Inhibitor Treated) or Wire-Reinforced versions.

Is this packing “Non-Contaminating”?

Because it uses high-purity graphite and inert PTFE, it is very clean. It does not contain oils or greases that can “bleed out” and contaminate the process media, making it suitable for many pharmaceutical and chemical applications.

Why use this instead of a pure PTFE packing?

Pure PTFE is a poor heat conductor and can “cold flow” or extrude. By using a graphite base with PTFE impregnation, you get the thermal conductivity and strength of graphite combined with the sealability of PTFE.

Can I use this for high-pressure steam?

It is excellent for saturated steam within its temperature limit (260°C). For superheated or high-pressure steam, the PTFE may “cook out,” so we recommend our standard Braided Graphite grades for those environments.

How do I install this packing?

Cut the packing into individual rings with a 45° miter joint. Stagger the joints by 90 degrees during installation. Because of the PTFE, you will find it slides into the stuffing box more easily than standard dry graphite.