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Type A and AL Joint Seal

Last edit date: 10/9/2024

The following Type A and AL joint Seals have been authorized for use when specifications require use of a Type A and AL joint seal. Typical uses are filling joints in concrete structures, and can be used in new construction or repair and maintenance of existing expansion joints. This sealant is referenced in Section 51-2.02B of the 2018 Caltrans Standard Specifications to current.

Manufacturer Product Name Expiration DateBABA Act Information*
Sika Corporation Sikasil 728 RCS 10/2026Manufactured product, domestic source reported
The Dow Chemical Company 902 RCS 10/2026Manufactured product, domestic source reported
Watson Bowman Acme Wabo Silicone Sealant 10/2026Unconfirmed

The information contained herein, shall not be used for advertising purposes, nor is it an endorsement by the California Department of Transportation (Caltrans).

Evaluation Criteria: Instructions on how material is placed on the Authorized Material List (AML) can be found in the Authorization Requirements, and Acceptance Criteria for Type A and AL Joint Seals.

Caltrans contact: Mitra Rafiei, 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