Application
Properties
Application
- Sealmax Style 940S – Slit Type PTFE Envelope Gasket is manufactured by enclosing a compressible insert material inside a PTFE envelope with a precision slit opening
- This construction ensures that only PTFE comes in contact with the process media, while the insert provides excellent resilience and sealing capability.
- Style 940S allows easy assembly and improved flexibility during installation.
- Style 940S is suitable for Chemical Processing Equipment, Pharmaceutical and biotech plants, Food & beverage processing units, petrochemical and refinery services, Glass-lined reactors and fragile flange joints, corrosive fluid pipelines and vessels etc.
Properties
- Outstanding chemical resistance.
- Excellent sealing at low bolt loads
- Non-toxic and non-contaminating
- Prevents filler attack by aggressive media
- Suitable for brittle and glass-lined flanges
- Low friction, non-stick surface
- Long service life
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Technical Specifications
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SR.NO.
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PROPERTIES
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UNIT
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Test Method Reference
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Specified Values
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1.
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Density
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gm/cm3
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ASTM D-792
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2.15
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2.
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Tensile Strength (Min.)
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Mpa
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ASTMD-638
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20 – 30
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3.
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Hardness
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–
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Shore D
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60
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4.
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pH range
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–
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–
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0- 14
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5.
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Maintenance factor (m)
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–
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–
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2.5
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6.
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Seating stress (y)
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–
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–
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1500 psi
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General Specifications
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SR.NO.
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Parameters
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Specifications
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Remarks
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1.
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Material
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100% Virgin PTFE
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–
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2.
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Colour
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White
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–
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3.
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Operating Temperature
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Max 260⁰ C
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–
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4.
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Pressure range
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Upto 40 bar
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Depends on insert and service conditions
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5.
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Size range
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DN 15 to DN 600 and above
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Customized sizes on request(Fused Type is available for bigger sizes)
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6.
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Available thickness
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0.5mm to 6.0mm
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Customized on requests
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7.
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Available inserts
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CNAF, Rubber, Graphite
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Customized insert on request
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