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Heat Shrinkable Sleeve

Product Detail Information

Shaic HS-340 is a heat-shrinkable wraparound sleeve designed for corrosion protection of field-welded joints of plastic coated steel pipelines. It has a thick cross linked polyethylene backing coated with butyl rubber based mastic sealant or hot melt adhesive. Hot Melt or Mastic shall depend on project requirements. When heated the backing layer shrinks and the sealant flows and forms a reliable corrosion protection seal onto metal and adjacent coating surfaces.

Cut Sleeve is normally supplied with separate Patch Closure, which is coated with a high shear-strength adhesive; however, there are different types and sizes to comply with individual requirements. It is supplied in bulk rolls as well, and has super-heavy duty, heavy duty and regular thickness.

Long-term Corrosion Protection

After heating, formed corrosion protection seal & strong backing provides outstanding waterproofing effect and high chemical resistance.
SHAIC HS-340 resists impact, abrasion and ultraviolet light. Free from penetrating pinholes due to multi-layered structure. Excellent resistance against catholic disbandment, dielectric breakdown.

Simple Application

No special skills and equipments are needed. Sleeve is installed in minutes with a propane torch. Wrap the sleeve around foreign matters-free, preheated surface. Fix the center of preheated patch closure on the overlapped end and start heating the sleeve in the center. Move the torch around pope circumferentially to heat toe left and the right half of sleeve. Finish off by heating vertically over the entire sleeve to ensure a uniform adhesion and by using a roller or gloved hands to remove wrinkle and air.

Bulk Rolls

SHAIC HS-340 is supplied in bulk rolls, which is cut in the field for any size of pipe. No need to drive to warehouse and just cut customized length in the field in time that reduces inventories and saves the cost & time.

Physical Properties

Properties Test Method Values
Mastic Hot Melt
Inner Layer Softening Point ASTM E28 105°C (221°F) 85°C
Lap Shear DIN30672ASTM1002) 24N/㎠(35psi) 28N/㎠(40psi)
Out Layer Tensile Strength ASTM D638 17Mpa(2500psi) 17Mpa(2500psi)
Elongation ASTM D638 400%↑  400%↑
Hardness ASTM D2240 45↑ 45↑
Heat Aging Elongation After 70 days ASTM D638
(DIN 30672)
528% 528%
After 100 days 524% 524%
Tensile Strength After 70 days 196N/10mm 196N/10mm
After 100 days 191N/10mm 191N/10mm
Volume Resistivity ASTM D257 10↑ 10↑
Dielectric Breakdown ASTM D149 28kV 28kV
Sleeve Impact Resistance ASTM G14 Pass holiday detection test with 20kV detector Pass holiday detection test with 20kV detector
Penetration Resistance ASTM G17
Peel Strength ASTM D1000 30N/cm 62N/cm
Water Absorption ASTM D570 0.1%↓ 0.1%↓
Catholic Disbandment ASTM G8 15mm 7.9mm
Adhesion Strength To P.E ASTM D1000 25N/cm 34N/cm
To Steel 32N/cm 68N/cm