Foster® Fibrous Adhesive 81-27™

Identification

GBU

BAS

RTU Product Type

Cement Adhesive,

Adhesive,

Waterborne Adhesive

Categories

Markets → Industrial → Applications → Chemical & Industrial Manufacturing → Industrial Adhesives & Sealants

Technologies → Adhesives & Sealants → Product Families → Bonding & Sealing Chemistry → Cementitious Adhesive & Sealants

Technologies → Adhesives & Sealants → Product Families → Bonding Technology → Water-Based Adhesives

Applications

Application Method

Brush,

Trowel

Applications & Uses

Limitations

• 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.

Preparation and Application Information

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.

Features

Ready-to-Use Product Features

Good Adhesion,

Water-based

Features & Benefits

Labeling Claims

Lead-free,

Asbestos-free,

Mercury-free

Product Highlights

• 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.

Packaging & Availability

Regional Availability

• Asia Pacific
• North America
• Latin America
• India/MiddleEast/Africa (IMEA)

Physical Properties

Color (Properties)

Beige

Physical Form

Liquid

Properties

Shelf Life:

6 months

Typical Properties

	Value	Units	Test Method / Conditions
Average Non-Volatile Content	41	Vol(%)	ASTM D2369
Average Non-Volatile Content	63	Wt(%)	ASTM D2369
Bonding Time Range	0 - 5	minutes	FSTM 66
Coverage Range (brush, 0.040 in. to 0.032 in. wet film thickness)	40 - 50	sq. ft./gal.	FSTM 72
Coverage Range (trowel, 0.064 in. to 0.053 in. (1.6 to 1.3 mm) wet film thickness)	25 - 30	sq. ft./gal.	FSTM 72
Density	13.7	lbs/gal	ASTM D1475
Flash Point (wet flammability)	100	°C	ASTM D93
Storage Temperature	4 - 38	°C	-
Volatile Organic Compound Content	0	g/L	-

Application Properties

	Value	Units	Test Method / Conditions
Coverage Range	25 - 40	ft²/gal	-
Service Temperature Limits (at coated surface)	10 - 427	°C	-

Regulatory & Compliance

Chemical Inventories

DSL (Canada),

ENCS (Japan),

IECSC (China),

KECI (Korea),

PICCS (Phillipines),

TSCA (USA),

TCSI (Taiwan)

Storage & Handling

Storage Condition

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

Shelf Life

6 months