FlexSleeve®
Internal Sleeve Innovation

Advantages
Flexibility : Thin-gauge assembly adjusts to pipe shape for easy insertion & consistent seal quality.
Sealing : Bore seals accommodate pipe ID tolerances and seal at any pipeline pressure.
Weld Quality : Flexibility allows for a better fit, easier root pass, and more consistent weld quality.
Heat Resistance : Wider sleeve & thicker insulation reduces heat impact & does not slow down welding.
Large Diameters : Accommodates out of round pipe
Automatic Welding : Compatible with internal lineup clamps & automatic welding

Patents Pending
Advantages
Aromatic Polyurethane
Excellent long term resistance to
water permeationVery good adhesion to steel
Good abrasion resistance
Withstands stress from pigging and
internal lineup clamps- Sufficient flexibility and elongation for thermal expansion, pipe handling & cold bends
Thermoplastic Polyurethane
- Excellent abrasion resistance & sufficient thickness for highly abrasive slurries
- Superior physical properties (tensile, tear, elongation)
- Very good adhesion to steel
Natural & Synthetic Rubber
Excellent abrasion resistance & sufficient thickness for highly abrasive slurries
Superior resilience and elongation
Excellent adhesion to steel
Synthetic rubbers are resistant to high temperatures & various chemicals
Fusion & Liquid Bonded Epoxy
Cost-efficient corrosion protection for water pipelines
Excellent adhesion to steel
Good chemical resistance
Novolac & phenolic epoxies provide very good heat & chemical resistance
Thermoplastic Polyamides (Nylon)
High flexibility
Good heat resistance
Good abrasion resistance
- Resistant to oils and many chemicals
- Low moisture absorption
Hi-Density Polyethylene
Very low water permeation
Good abrasion resistance
Sufficient thickness to eliminate possibility of liner pinholes