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Sproule WR-1200® is a pre-formed, high temperature, non-wicking pipe and block
insulation composed of expanded perlite uniformly reinforced with a high strength fiber
for use on systems operating up to 1200°F (649°C). It is inorganic, non-combustible and
meets or exceeds the physical property requirements of ASTM C610. Sproule WR-1200
is produced with a blue visual color coding dispersed throughout the product to assure it
can be identified as asbestos free. Integral to Sproule WR-1200 is XOX, a distinctive
formula and process that inhibits corrosion to outside surfaces of pipe and equipment,
especially stress corrosion cracking of austenitic stainless steel.

Because of its compressive strength, low thermal conductivity and corrosion inhibiting
properties, Sproule WR-1200® is an excellent product for application on high
temperature piping and equipment. In industrial processing and power generation
facilities, Sproule WR-1200 is the preferred product for stainless steel piping, which is
very susceptible to stress corrosion cracking at operating temperatures above
140°F (60°C). The XOX feature inhibits corrosion where moisture and chlorides may
become trapped between insulation and stainless steel.

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