Name: HBR庐
CLOSED CELL BACKER ROD
Round, flexible, continuous lengths of extruded,
closed cell polyethylene foam backer rod for use as
a backing material for elastomeric and other cold
Transforming Foam into Innovation
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
TYPE: C - Per ASTM C 1330. Cylindrical, flexible sealant backings Compression deflection, psi (kg/cm2) 15 (1.05) D 5249
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
TABLE 1
TEMPERATURE LIMITS: -45掳F to 160掳F
Product Packaging Information and
HBR庐
Recommended Diameter Use for Joint Width
APPLICATIONS
Commonly used in new construction. Expansion/Contraction
Nominal Joint Linear Ft./ #/
Joints where cold applied sealants are used such as: curtain walls, Carton
Diameter Dimension Carton Carton
Dimension
construction partitions, precast assemblies and copings, parking in. - mm in. - mm lft. - m lbs. - kg
decks, bridge construction, building rehabilitation, etc. 1/4鈥? 6 3/16鈥? or less 5 or less 6400 1951 18鈥漻18鈥漻31鈥? 12 5.5
3/8鈥? 10 1/4鈥? 6 3600 1097 18鈥漻18鈥漻31鈥? 12 5.5
BENEFITS 1/2鈥? 13 3/8鈥? 10 2500 762 18鈥漻18鈥漻31鈥? 12 5.5
Limits depth of the sealant and prevents excessive sealant use. 5/8鈥? 16 1/2鈥? 13 1550 472 18鈥漻18鈥漻31鈥? 12 5.5
Helps sealant assume optimum shape factor to prolong sealant 3/4鈥? 19 5/8鈥? 16 1100 335 18鈥漻18鈥漻31鈥? 12 5.5
service life. Will not absorb water or wick water into the joint 7/8鈥? 22 11/16鈥? 18 850 259 18鈥漻18鈥漻31鈥? 12 5.5
walls to cause adhesive failure. Prevents back-side adhesion of 1鈥? 25 3/4鈥? 19 550 168 18鈥漻18鈥漻31鈥? 12 5.5
1 1/4鈥? 32 7/8鈥? 22 400 122 18鈥漻18鈥漻31鈥? 12 5.5
the sealant.
1 1/2鈥? 38 1 1/8鈥? 29 552 168 12鈥漻22鈥漻74鈥? 18 8
2鈥? 51 1 5/8鈥? 41 360 110 12鈥漻22鈥漻74鈥? 18 8
SIZE SELECTION 2 1/2鈥? 64 2鈥? 51 240 73 12鈥漻22鈥漻74鈥? 18 8
Proper size selection is important as it controls the depth of the 3鈥? 76 2 1/2鈥? 64 144 44 12鈥漻22鈥漻74鈥? 18 8
sealant bead. It must be oversized to fit tightly into the joint and 4鈥? 102 3鈥? 76 90 27 12鈥漻22鈥漻74鈥? 18 8
function as a bondbreaker to prevent back-side adhesion of the 6鈥? 152 4-1/2鈥? 114 72 22 25鈥漻12鈥漻112鈥? 40 18
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
February 2008
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