PTFE-Wellendichtung, Doppellippendichtung, Hochgeschwindigkeitsausführung, Edelstahl, 32 mm–40 mm

Produktübersicht:
This premium PTFE (Teflon) rotary shaft seal is engineered for demanding high-speed and high-temperature applications. Featuring a robust stainless steel outer case and a precision-machined PTFE sealing lip, it delivers exceptional chemical resistance, low friction, and reliable performance where standard rubber oil seals fail. Available in both single and double-lip designs for shaft diameters from 32mm to 40mm.

Hauptmerkmale

• Advanced PTFE Material: The sealing lip is made of virgin or filled PTFE, offering extreme chemical inertness, a wide temperature range (-60°C to +200°C), and minimal friction without the need for additional lubrication.
• Stainless Steel Construction: The outer metal case and spring are made of high-grade stainless steel (SS304/SS316), providing excellent corrosion resistance against water, steam, and aggressive chemicals.
• Double Lip & Single Lip Options: The double-lip design features a primary sealing lip for leak prevention and a secondary dust lip to block contaminants; the single-lip design is optimized for ultra-low friction and high-speed rotation.
• High-Speed Performance: Engineered to withstand high circumferential speeds (up to 20-30 m/s depending on shaft finish), preventing lip burn-out or degradation.
• No "Creeping" or Shaft Wear: PTFE's self-lubricating properties prevent stick-slip effects and reduce wear on the rotating shaft, extending equipment lifespan.

Hochwertiges Material: Made from top-grade raw materials for optimal sealing performance. Features a smooth, burr-free finish that resists twisting and deformation for long-lasting durability.

Extensive Specifications: A comprehensive range of sizes with clear markings to suit diverse industrial applications, effectively extending your equipment's service life.

Reliable Sealing: Delivers highly efficient, long-lasting waterproof and oil-resistant performance. Built to withstand heavy wear, high pressure, and impact while maintaining stable operation.

Fast Delivery: Ample stock ensures prompt dispatch. Flexible shipping options are available, including standard freight logistics and express courier services.

Technische Spezifikationen:

Anwendungsszenarien:

1. High-Speed Motors & Pumps
High-speed rotation generates intense friction and heat, which quickly degrades standard rubber seals, causing them to harden, crack, or burn out. This PTFE rotary shaft seal acts as the ultimate solution. Its ultra-low friction coefficient and self-lubricating properties drastically reduce heat generation, allowing continuous operation at high speeds (up to 20 m/s) without lip degradation. It ensures reliable leak prevention in chemical pumps, water pumps, and high-speed electric motors, significantly extending maintenance intervals and reducing equipment downtime.

Automotive & Turbomachinery
Operating in turbochargers, gearboxes, and compressors involves extreme thermal cycling (rapid heating and cooling) combined with high rotational speeds and pressure differentials. Conventional rubber seals may lose elasticity or suffer from permanent deformation under these harsh conditions. The PTFE lip seal maintains exceptional dimensional stability across a wide temperature range (-60°C to +200°C). It effectively seals synthetic oils and prevents fluid cross-contamination, even under high-pressure thermal cycles. This ensures long-term reliability for turbocharger shafts, prevents oil leakage into the intake system, and optimizes the overall efficiency of compressors and gearboxes.

Chemical & Food Processing
In these industries, seals must withstand highly aggressive media while strictly preventing contamination. Standard elastomers often swell, degrade, or fail when exposed to strong acids, alkalis, or solvents. Our PTFE seal offers near-universal chemical inertness, ensuring structural integrity and zero leakage even in the harshest chemical environments. Furthermore, when manufactured with FDA-compliant, food-grade PTFE compounds, this seal is completely non-toxic and odorless. It acts as a sanitary barrier in mixing equipment and sanitary pumps, easily withstanding rigorous CIP (Clean-in-Place) and SIP (Sterilization-in-Place) cleaning processes.

How PTFE Rotary Seals Work?

Unlike rubber seals that rely solely on elastic deformation, PTFE rotary seals utilize advanced dynamic sealing mechanisms:

• Hydrodynamic Effect: The PTFE lip is precisely machined with a microscopic helix angle. As the shaft rotates, it creates a "pumping effect" that actively pushes leaked fluid back into the system, ensuring a dry seal face.
• Self-Tightening Design: The unique geometry and the stainless steel garter spring apply optimal radial force, maintaining a tight seal even under high pressure and varying temperatures without over-compressing the lip.

PTFE vs. Standard Rubber Seals

Installation & Handling Guidelines

• Shaft Finish: Recommended surface roughness Ra 0.2 - 0.8 μm for optimal lip life.
• Chamfer & Deburring: A 15°-30° chamfer on the shaft is highly recommended to prevent the delicate PTFE lip from being scratched during installation.
• Concentricity & Runout: Ensure shaft runout does not exceed 0.05mm and housing bore eccentricity is minimized to avoid uneven lip wear.
• Note: PTFE seals are rigid and cannot be stretched. Never install them over splines or sharp threads.

OEM / ODM Customization

We support full customization to match your specific equipment requirements:

• Custom non-standard sizes and cross-sections.
• Choice of PTFE compounds (Carbon, Glass fiber, Graphite filled for higher pressure/speed).
• Alternative spring materials (Hastelloy, etc.) for extreme corrosion.
• Custom packaging and private labeling available.