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Description:
Closed-Cell Round Backer Rod
Compatible with all know types of sealants including butyl, polyurethane, silicones, tri-polyimer,
Backer rods are made of polyethelene resion with additive through the processes of physical foaming and extrusion. The enclosed-hole foams are fillings specially designed for buildings(at different types of curtain walls, doors, windows specially lighting roofs), aluminum alloy guesset plates. 
It can maintain the coimbined shape of sealing rubber and prevent the thress sides from sticking and stress from being formed at the seal rubber. Then it can enhance the performances of the sealing rubber.

Type:Other Plastic Building Materials
Material:EPE
color::various
length:Any length
Density:23-25kgs/m3.
Diameter:1mm to 30 mm. 
Packaging Detail:pp or carton
Delivery Detail:15-20days after receiving advance payment
Specifications:

Advanced Characters:
Round, firm, resilient, polyethylene extruded closed celled foam with a water resistant outer skin. Popullar Color is white,blue,red,gray.
Provides controlled depth for sealants.
Compresses up to 50% in smaller sizes and 30% in large sizes.
Does not stick to sealants. Exceeds ASTM standards for bond breakering materials. 
No bond breaker is required.
Very high moisture resistance. Will not absorb ground water.
Any customer's drawings and samples are welcomed.

APPLICATIONS:
High moisture environments
Ground based expansion joints
General purpose sealant backing
Use together with self-leveling sealant
Highway joints
Parking garages
Around perimeters of door and window frames,
Coping and glazing joints
Log Home chinking
Isolation joints