Sika Sikaflex-1A Polyurethane Sealant, Capital Tan, 20 oz

Sikaflex-1A is a premium-grade, one-component, moisture-cured polyurethane, non-sag elastomeric sealant in Capital Tan, supplied in a 20 oz tube. It can be applied to green and damp concrete and meets ASTM C920, Type S, Grade NS, Class 35, Use T, NT, O, M, A, I. One tube is included per order and it pairs with a standard 20 oz sausage/colgun dispensing setup.

Key Features:

• One-Component: Moisture-cured, one-part polyurethane requires no mixing.
• Non-Sag Formula: Non-sag elastomeric consistency holds in vertical joints.
• Damp Concrete Use: Can be applied to green and damp concrete applications.
• Elastomeric Movement: Class 35 movement capability per ASTM C920.
• Premium Grade: High-performance sealant for construction joint sealing.
• Standards Met: Meets ASTM C920 and Federal Specification TT-S-00230C, Type II, Class A, plus CAN/CGSB 19.13-M87.

Specifications Table:

Fit and Compatibility:

Bonds to concrete, masonry and other substrates approved for polyurethane sealants, including green and damp concrete. Dispensing gun for 20 oz tubes is sold separately.

Frequently Asked Questions (FAQ):

Q: What is included in the order?
A: One 20 oz tube of Sikaflex-1A in Capital Tan.

Q: Can I apply it to damp concrete?
A: Yes, the manufacturer states it can be used in green and damp concrete applications.

Q: What standards does it meet?
A: It meets ASTM C920 Type S, Grade NS, Class 35, Uses T, NT, O, M, A, I; Federal Specification TT-S-00230C Type II, Class A; and CAN/CGSB 19.13-M87.

Q: Is it self-leveling?
A: No, Sikaflex-1A is a non-sag formula designed for vertical and horizontal joints.

Q: What type of sealant is it?
A: It is a one-component, moisture-cured polyurethane elastomeric sealant.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Sikaflex-1A is a workhorse for sealing control and expansion joints, penetrations and panel joints where a non-sag polyurethane is wanted. Tool it within its working time and keep the tube capped once opened since moisture cures it. On substrates subject to high movement or exposure, verify joint design and priming with the Sika data sheet for the specific project.

Use with ventilation and follow the SDS precautions; uncured polyurethane sealant can cause skin and eye irritation.

Order Sikaflex-1A Capital Tan 20 oz for a premium non-sag polyurethane seal.