Foam Seal Systems > CSD-Series
The "Defender" Contour Seal (CSD) is used as a backer seal and serves as a dual sealant system when used with a high quality urethane or a silicone joint sealant. It is designed with a bond-breaker for caulk. When installed in a joint, the CSD seal’s internal recovery force holds it in place while the sealant compound prevents penetration of air, dust, noise or water. CSD can extend up to 100% and return to seal the joint. It works on a completely different principle from caulk joints and therefore is not subject to the same type of failures.
The CSD foam seal is composed of polyurethane, micro-cell foam coated with a hydrophobic, flame retardant, acrylic polymer compound that is UV stable and chemically resistant.
When CSD is installed in place of an ordinary backer rod, it performs as a super sealant independent of the surface caulking. The product is designed to provide a permanent, watertight seal, and assures protection as a secondary sealer.
The pre-compressed, self-adhering, material allows for its use in horizontal as well as vertical applications. It is well suited for areas where dust, water, or sound are a consideration. The seal has movement capability of +/-50% for 100% total movement.
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