Foster® Fibrous Adhesive 81-27™

• Fibrous Adhesive can also be used for lagging high temperature alkali resistant cloth on high temperature insulation.
• Nuclear Grade Fibrous Adhesive 81-27Q can be supplied to meet the stress corrosion and chemical analysis requirements of MIL-I-24244C or Nuclear Regulatory Guide 1.36 on special order.
• Fibrous Adhesive contains no asbestos, lead, mercury, or mercury compounds.
• Fibrous Adhesive meets requirements for LEED IEQ 4.1 Low-Emitting Materials, Adhesives and Sealants.

• Apply between 40°F and 100°F, protect from freezing until dry.
• Since the dry adhesive film is soluble in water, it should not be used where moisture will be encountered.
• Because of its sodium silicate base, this product is not recommended for use with glass fiber or other alkali sensitive insulations.
• Primed or painted metal surfaces should be tested for compatibility.
• If used between impermeable surfaces, drying time will be extended.

Material Preparation

• Do Not Thin.
• Stir well, but do not use sticks or boards which would splinter or otherwise contaminate the product.
• Apply only to clean, dry, oil-free surfaces. Keep container closed when not in use.

Application 

• Remove any dust from the surfaces to be bonded.
• To both surfaces of insulation apply a coat of Foster® Fibrous Adhesive by brush or trowel at a coverage of 25 to 40 sq. ft./gal. (.61 - .98 m2 /l).
• Allow an open time of 0 to 5 minutes to develop full tack.
• Place the adhered surfaces together, applying pressure to assure complete and uniform contact.

Brush 

• Use a clean paintbrush and apply evenly at recommended coverage. Bond immediately with firm pressure.

Trowel 

• Use steel trowel. Apply evenly at recommended coverage. Bond immediately with firm pressure.

Clean Up 

• Clean brushes and equipment with water.

Store between 40°F and 100°F, protect from freezing until dry.