Name: HBR庐
CLOSED-CELL BACKER ROD
HANDY PACKS
Round, flexible, continuous lengths of extruded,
closed-cell polyethylene foam backer rod for use as
Transforming Foam into Innovation
a backing material for elastomeric and other cold
applied sealants.
FEATURES
Physical Property Requirements
鈥? Meets all of the requirements of the 1990 Clean Air Act
鈥? Is a 鈥淒omestic End Product鈥? as defined in the Buy American Property Value ASTM Test Methods
Act, Title 41 USC 10
Water absorption (g/cc) <.03 C 1016鈥擯rocedure B
鈥? Easy to apply
Density lb/ft3 (kg/m3), max
鈥? Chemically inert 1.3-2.3 (20-37) D 1622
鈥? Waterproof Outgassing (No. of bubbles) <1 C 1253
Compression recovery, %, min >90 D 5249
DESCRIPTION
25% Compression deflection force,
TYPE: C - Per ASTM C 1330. Cylindrical, flexible sealant backings 15 (1.05) D 5249
psi (kg/cm2), max
composed predominantly of closed cell material per ASTM C 1330
Tensile Strength psi (kg/cm2), min 24 (1.69) D 1623
for use with cold applied sealants.
FORM: Round Foam Rod
TEMPERATURE LIMITS: -45掳F to 160掳F
TABLE 1
Product Packaging Information and
APPLICATIONS HBR庐
Recommended Diameter Use for Joint Width
Commonly used in new construction. Expansion/Contraction
Joints where cold applied sealants are used such as: curtain walls,
Nominal Joint Linear Ft./ #/
construction partitions, precast assemblies and copings, parking Carton
Diameter Dimension Carton Carton
decks, bridge construction, building rehabilitation, etc. Dimension
in. - mm in. - mm lft. - m lbs. - kg
1/4鈥? 6 3/16鈥? or less 5 or less 2500 762 15鈥漻15鈥漻18鈥? 7 3
BENEFITS 3/8鈥? 10 1/4鈥? 6 1400 427 15鈥漻15鈥漻18鈥? 7 3
Limits depth of the sealant and prevents excessive sealant use. 1/2鈥? 13 3/8鈥? 10 800 244 15鈥漻15鈥漻18鈥? 7 3
Helps sealant assume optimum shape factor to prolong sealant 5/8鈥? 16 1/2鈥? 13 550 168 15鈥漻15鈥漻18鈥? 7 3
service life. Will not absorb water or wick water into the joint
walls to cause adhesive failure. Prevents back-side adhesion of
the sealant.
SIZE SELECTION
Proper size selection is important as it controls the depth of the
sealant bead. It must be oversized to fit tightly into the joint and
function as a bondbreaker to prevent bottom-side adhesion of
the sealant.
COMPATIBILITY
HBR庐 is basically an inert material; and therefore, it is compatible, both physically and chemically, with virtually all known cold applied sealants including
self-leveling types.
JOINT PREPARATION (Pavements)
New joints must be cleaned thoroughly, removing any concrete form-release agents, curing compound residue, laitance, or any foreign materials. Freshly
sawed joints should be washed with water immediately afterward to remove any loose material from the joint faces. Wire brushing, sandblasting, high-
pressure water, or any combination of techniques should be used to remove contaminants remaining on the joint face. To ensure a good sealant bond,
joints must be clean and dry when the new sealant is installed. In repairing old joints, all old sealant or filler must be removed. This can be done by cutting
or blowing out the old material or using any other procedure found to be effective.
INSTALLATION AND SEALANT PLACEMENT (Buildings)
Just prior to placing the backer rod, clean all joints per the sealant manufacturer鈥檚 recommendations. Air compressors used for this purpose must be
equipped with traps for removal of oil and moisture. Install the backer rod at the depth recommended by the sealant manufacturer with a blunt tool.
PRECAUTIONS
Do not puncture, over compress or stretch HBR庐 during insertion. Do not use with hot applied sealants. Tests for outgassing of cold applied sealants shall be
made in accordance with ASTM Test Method C 1253. Sealant compatibility should be confirmed by the sealant manufacturer. Compatibility characteristics
of sealants in contact with sealant backings can be determined by ASTM Test Method C 1087.
Although every effort has been made to assure the accuracy of this information and the safety and suitability of its products, Nomaco Inc. accepts no responsibility for results obtained by
the application of this information or for the safety and suitability of its products, either alone or in combination with other products. Users are advised to make their own tests to determine
the safety and suitability of each such product or product or product combination for their own purposes. In view of the various conditions under which this information and our products or
the products of other manufacturers in combination with our products may be used, Nomaco sells its products without warranty, and buyers and users assume all responsibility and liability
for loss or damage from handling and use of these products, whether used alone or in combination with other products.
Nomaco Inc 鈥? 501 NMC Drive, Zebulon, North Carolina 27597 鈥hone: 919.269.6500 or 800.345.7279 鈥? Fax: 919.269.7936 鈥? www.nomaco.com
December 2007
|