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VAJ/KA3J PTFE Rotary Rod Seals | FDA-Compliant Hydraulic Seals for Adhesive Media
Engineered for extreme industrial environments, the VAJ/KA3J Piston Rod Seal redefines chemical resistance in mixers, blowers, and food processing machinery. Combining PTFE sealing lips with a corrosion-resistant SUS stainless steel framework, this hydraulic cylinder rod seal conquers adhesive powders, viscous liquids, and aggressive chemicals where conventional seals fail.
Unmatched Technical Specifications
Material:
Sealing Lip: Chemical-resistant PTFE (Polytetrafluoroethylene)
Structural Frame: SUS Stainless Steel
Temperature Range: -70°C to +260°C (-94°F to +500°F)
Working Pressure: ≤20 bar (290 psi)
Surface Speed: ≤20 m/s (3,937 ft/min)
Media Compatibility: Petroleum-based hydraulic oils, adhesive fluids, food-grade substances
Certifications: FDA-compliant for food/pharmaceutical applications
Critical Applications & Advantages
Ideal for sealing challenges involving:
Adhesive Media: Seals sticky slurries in industrial mixers without clogging
High-Temperature Processing: Blower shaft seals in 260°C thermal oil systems
Sanitary Environments: Aseptic food machinery with CIP/SIP cleaning cycles
Chemical Exposure: Resists acids/alkalies in pharmaceutical reactors
Key performance benefits:
Zero Contamination: Stainless steel framework eliminates rust risks
Dry-Run Capable: PTFE lips operate without lubrication
Non-Stick Surface: Prevents material buildup in powder handling systems
Thermal Shock Resistance: Withstands rapid -70°C ↔ +260°C transitions
Installation & Operational Guidelines
Surface Finish: Pair with hardened shafts (Ra ≤0.2μm) to prevent PTFE abrasion
Clearance Control: Maintain axial play per VAJ/KA3J datasheet specifications
Pressure Caution: Not for high-pressure systems >20 bar – use backup rings if pulsations exceed limit
Speed Optimization: For 20m/s operations, combine with KVK O-rings (sold separately)
Why VAJ/KA3J Outperforms
260°C Thermal Barrier: 2× higher temperature tolerance than standard PTFE seals
Stainless Steel Skeleton: 316L SUS framework prevents galvanic corrosion
FDA/GMP Compliance: Full material traceability for food/pharma sectors
Upgrade to chemical-proof rod seals trusted by cement plants, sauce processors, and industrial blower OEMs. Request free PTFE compatibility reports or sanitary design validations!
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Main Product:
Hydraulic Seals,
Rod seals,
Piston Seals,
Wiper Seals,
Hydraulic Seals Manufacturer,
Seals Supplier
