Flexible Foam Rods For Use As Backer For Sealants

SOF-Rod

Chem Link SOF®-Rod is a cylindrical, flexible foam
rod for use as a sealant backing. SOF®-Rod is
composed of a bi-cellular material. SOF®-Rod may
also be used as a gasket or sealing material as per
ASTM C 717.
TYPE: B - Per ASTM C 1330. Cylindrical, flexible
sealant backings composed of bi-cellular material.
Also reference ASTM C 717 for use as gasket or
sealing material.
TYPE: 3 - Per ASTM D 5249. Round rods of various
diameters for use with non-sag and self leveling cold
applied sealants.
TEMPERATURE LIMITS: -45°F to +160°F.

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Benefits

Use of SOF-Rod limits the depth of the sealant and prevents excessive sealant use. It also acts as a barrier to the flow of sealant through the joint, helps prevent 3 point bonding, and forces the sealant to take a more optimum shape prolonging sealant service life.

Compatibility

SOF-Rod is composed of a bi-cellular polyolefin foam. Bi-cellular polyolefin foam is compatible, both physically and chemically, with most cold applied sealants. Compatibility of sealants in contact with backings can be evaluated according to ASTM 1087test Method C.

HBR®-Rod

Chem Link HBR®-Rod is a round, flexible, continuous lengths of extruded, closed-cell polyethylene foam backer rod for use as a backing material for elastomeric and other cold applied sealants.

TYPE: C - Per ASTM C 1330. Cylindrical, flexible sealant backings composed predominantly of closed cell material per ASTM C 1330 for use with cold applied sealants.

TYPE: 3 -Per ASTM D 5249. Round rods of various diameters for use with cold applied joint sealants.

TEMPERATURE LIMITS: -45°F to +160°F.

Benefits

HBR limits the depth of the sealant and prevents excessive sealant use. It also helps sealant assume optimum shape factor to prolong sealant service life and acts as a barrier to the flow of sealant through the joint.

Compatibility

Closed-cell polyethylene foam is an inert material; and therefore, it is compatible, both physically and chemically, with virtually all known cold applied sealants including self-leveling types.