PTFE Filament Packing

At Kriloha Ltd., we understand that in the pharmaceutical and food industries, “Clean” is a safety requirement, not a suggestion. A packing that leaches particles or changes the color of your product is a failure. The Kriloha PTFE Filament Packing is our engineered answer for “Ultra-Pure” containment. As a premier global supplier of high-performance seals, Kriloha Gaskets has mastered the Square-Interlock Braid technology required to turn high-tenacity PTFE fibers into a dense, leak-proof barrier.

The engineering of our PTFE Filament series is based on Fiber Density. Unlike standard PTFE yarns, our filaments are “continuous,” meaning there are no short fibers to fray or “lint” into your fluid stream. At Kriloha, we often vacuum-impregnate the braid with a secondary PTFE dispersion. This “Double-PTFE” treatment fills the microscopic voids between the braided yarns, creating a gas-tight seal that remains lubricated throughout its service life.

Manufacturing this packing at Kriloha involves strict Contamination-Free Processing. Our braiding machines for this product are dedicated to white yarns only, ensuring zero cross-contamination from graphite or aramid dust. Whether you are sealing a high-speed chemical agitator or a critical food-grade valve, Kriloha PTFE Filament Packing provides the chemical invincibility and mechanical purity your facility demands. By choosing Kriloha Ltd., you are investing in a “Zero-Leach” technology that protects your product integrity and your equipment.

Primary Use Cases

Pharmaceutical Mixers & Agitators: Providing a “clean-room” compatible seal that resists aggressive cleaning chemicals and sterilization cycles.
Food & Beverage Processing: Used in centrifugal pumps and valves handling syrups, juices, and dairy products where FDA compliance is mandatory.
Aggressive Chemical Valves: Sealing valve stems in plants handling fuming nitric acid, caustic soda, and corrosive solvents.
Fine Chemical Production: Ideal for processes where even microscopic color contamination from graphite or carbon packings is unacceptable.
Centrifugal Pumps (Light Duty): Suitable for rotating equipment handling clean, corrosive fluids at moderate speeds.

FAQs

Is this packing FDA compliant?

Yes. Kriloha PTFE Filament Packing is manufactured using materials that meet FDA 21 CFR 177.1550 requirements for contact with food and pharmaceutical products.

Can I use this for high-speed centrifugal pumps?

While PTFE is very slick, it is a poor heat conductor. For high-speed pumps (above 10-12 m/s), the heat can build up quickly. In those cases, Kriloha recommends our Graphite-PTFE (GFO style) or maintaining a very high cooling flush.

What is the difference between “Filament” and “Expanded” PTFE packing?

Filament: Stronger, denser, and better for high-pressure valves.

Expanded: Softer, more compressible, and better for sealing worn shafts or fragile glass-lined equipment.

Does it require a specific shaft hardness?

PTFE is very soft and non-abrasive. It can be used on almost any shaft material, including 316 Stainless Steel, without the risk of scoring or wear.

How do I install PTFE Filament Packing?

Cut the packing into rings with a 45° miter joint. Stagger the joints by 90°. Because PTFE expands when heated, Kriloha recommends a slightly looser initial gland adjustment to allow for thermal expansion during the first hour of operation.