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Silicone Joint Sealant

Last edit date: 10/1/2025

Silicone sealant is a single component product and typically used for sealing and/or replacing longitudinal and transverse joints in Portland cement concrete (PPC) pavement. Pavement joints include isolation joints.

Specification requirements are located Section 41-5 of the 2025 Standard Specifications.

Evaluation Criteria: California Department of Transportation Silicone Joint Sealant, Authorization Procedures and Acceptance Criteria.

Manufacturer Product Name Expiration DateBABA Act Information*
Crafco, Incorporated RoadSaver, part number 34902 9/2030Manufactured product, domestic source reported
D.S. Brown Company DSB 800 10/2030Unconfirmed
Sika Corporation Sikasil-728 NS 7/2030Construction material, domestic
The Dow Chemical Company 888 Silicone Joint Sealant 11/2030Manufactured product, domestic source reported
TuffTex Materials RepSil NS 6/2028Construction material, domestic

Products on this Authorized Material List (AML) are products that have been evaluated and found acceptable for use, provided the products are used in accordance with the manufacturer’s instructions. The California Department of Transportation (Caltrans) may perform additional job control testing during construction or installation.

Caltrans contact: Mariano Pontillas, chemistry.branch@dot.ca.gov

*As attested to by the supplier.

The California Department of Transportation (Caltrans) is implementing statutory changes required by the Bipartisan Infrastructure Law – Build America, Buy America Act (BABA), which expands Buy America to additional construction materials, in addition to steel or iron materials and manufactured products.

https://www.fhwa.dot.gov/construction/cqit/buyam.cfm