Chemical Resistant Diaphragm Seal

Teflon Coated Diaphragm Seals are specialized pressure isolation devices designed for highly corrosive, aggressive, or reactive process media. These seals feature a diaphragm coated or lined with PTFE (Teflon), which provides excellent chemical resistance and prevents direct contact between the process fluid and the metallic parts of the instrument. The diaphragm transmits pressure through a fill fluid to the gauge or transmitter, ensuring accurate measurement while protecting the instrument from corrosion, contamination, and damage.

These seals are widely used in industries handling acids, alkalis, solvents, and hazardous chemicals. The PTFE coating ensures non-stick properties, making them ideal for applications involving sticky, viscous, or crystallizing media. Available in threaded, flanged, and sanitary configurations, Teflon Coated Diaphragm Seals provide reliable performance and long service life in harsh environments.

Technical Details:

• Product Type: Teflon Coated Diaphragm Seal
• Material: SS 316 / SS 316L with PTFE Coating / Lining
• Coating Type: PTFE (Teflon)
• Connection Type: Threaded / Flanged / Sanitary
• Diaphragm Type: Coated / Lined / Flush Type
• Fill Fluid: Silicone Oil / Fluorinated Fluid
• Pressure Range: Vacuum to High Pressure
• Temperature Range: -20C to 200C (PTFE limitation)
• Mounting: Direct / Capillary Type