---
product_id: 42749661
title: "Sikaflex 1a 20 oz Sausage, Aluminum Gray, 1 Unit, One Component, Elastomeric, Non Sag, Polyurethane Concrete and Masonry Joint Sealant for Vertical and Horizontal Joints"
brand: "sika"
price: "¥11221"
currency: JPY
in_stock: true
reviews_count: 10
category: "Sika"
url: https://www.desertcart.jp/products/42749661-sikaflex-1a-20-oz-sausage-aluminum-gray-1-unit-one
store_origin: JP
region: Japan
---

# Strong adhesion, no primer needed Weather & aging resistant ±35% joint movement flexibility Sikaflex 1a 20 oz Sausage, Aluminum Gray, 1 Unit, One Component, Elastomeric, Non Sag, Polyurethane Concrete and Masonry Joint Sealant for Vertical and Horizontal Joints

**Brand:** sika
**Price:** ¥11221
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal smart, last long — the pro’s choice for flawless joints!

## Quick Answers

- **What is this?** Sikaflex 1a 20 oz Sausage, Aluminum Gray, 1 Unit, One Component, Elastomeric, Non Sag, Polyurethane Concrete and Masonry Joint Sealant for Vertical and Horizontal Joints by sika
- **How much does it cost?** ¥11221 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/42749661-sikaflex-1a-20-oz-sausage-aluminum-gray-1-unit-one)

## Best For

- sika enthusiasts

## Why This Product

- Trusted sika brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Superior weather and aging resistance means your seals stay intact through every season.
- • **Unmatched Flexibility:** Accommodates joint movement up to ±35%, ensuring seals that move with your structure, not against it.
- • **Versatile Seal Master:** Perfect for vertical and horizontal joints in windows, doors, roofing, and concrete—seal like a pro everywhere.
- • **Universal Bonding Power:** Bonds strongly to most construction materials without primer—speed up your workflow.
- • **Effortless Pro Application:** One-component formula fits any standard caulking gun—no special tools required.

## Overview

Sikaflex 1A is a premium one-component polyurethane sealant designed for durable, flexible, and weather-resistant sealing of concrete and masonry joints. It offers ±35% joint movement accommodation, strong adhesion without primer, and easy application with standard caulking guns, making it ideal for professional-grade sealing in both vertical and horizontal construction applications.

## Description

Sikaflex 1A is a moisture-cured, non-sag elastomeric sealant that provides durable and flexible seals for various construction joints. Its one-component formulation simplifies application, requiring only a standard caulking gun. Once cured, it forms a tough, elastic seal capable of accommodating joint movement up to ±35%, ensuring integrity over time. The sealant adheres strongly to most construction materials without a primer and offers excellent resistance to aging and weathering. Suitable for both vertical and horizontal joints, Sikaflex 1A is an ideal choice for sealing windows, door frames, roofing details, and other construction joints.

Review: Awesome sealer for concrete and gap filler - This product worked great as a gap sealer between the concrete slab and bottom plate of our wood framed workshop. It is very rubbery when cured so it won't crack or shrink, very similar to silicone but with a rubbery feel to it. I have also used it as a sealer between the window flange and framing of a window opening in new construction applications. I think you can seal gaps up to 3/4" but that's gonn use a lot of material for a gap that large. I reccomend using appropriate size backer rod, then top coat with this product. -MLC Remodeling
Review: Durable and Stays Bonded - Put in a channel drain and sealed to side walk with this product. Adheres nicely and easy to work with and dries fairly quickly. Good concrete joint sealer.

## Features

- Easy Application: Requires only a standard sausage caulking gun for installation, eliminating the need for specialized tools.
- Flexible and Durable: Accommodates joint movement up to ±35%, ensuring long-lasting seals that withstand expansion and contraction
- Strong Adhesion: Bonds effectively to most construction materials without the need for a primer, simplifying the sealing process
- Weather-Resistant: Exhibits excellent resistance to aging and weathering, making it suitable for diverse climates and conditions
- Versatile Use: Ideal for sealing joints in windows, door frames, roofing details, and other construction applications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MH8OIXS |
| Best Sellers Rank | #143,978 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,000 in Industrial Sealants #1,103 in Caulk #107,044 in Hardware |
| Brand | SIKA |
| Color | ALUMINUM GRAY |
| Date First Available | August 6, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Form | Paste |
| Item Weight | 1.95 pounds |
| Item model number | 91002 |
| Liquid Volume | 590 Milliliters |
| Manufacturer | SIKA |
| Material | Polyurethane |
| Maximum Gap Fill | 1.2 Inches |
| Number of Items | 1 |
| Product Dimensions | 1.97 x 1.97 x 14.17 inches |
| Surface Recommendation | Concrete |
| Tensile Strength | 175 Pounds Per Square Inch |
| UPC | 033886003001 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** SIKA
- **Color:** ALUMINUM GRAY
- **Item Form:** Paste
- **Item Weight:** 0.89 Kilograms
- **Liquid Volume:** 590 Milliliters

## Images

![Sikaflex 1a 20 oz Sausage, Aluminum Gray, 1 Unit, One Component, Elastomeric, Non Sag, Polyurethane Concrete and Masonry Joint Sealant for Vertical and Horizontal Joints - Image 1](https://m.media-amazon.com/images/I/715Y8-yYzrL.jpg)

## Questions & Answers

**Q: How many in a pack?**
A: This product is packaged in cases of 20. If you would like to order a full case you would want to select a qty of 20. The price listed is per sausage.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Awesome sealer for concrete and gap filler
*by M***Z on November 6, 2020*

This product worked great as a gap sealer between the concrete slab and bottom plate of our wood framed workshop. It is very rubbery when cured so it won't crack or shrink, very similar to silicone but with a rubbery feel to it. I have also used it as a sealer between the window flange and framing of a window opening in new construction applications. I think you can seal gaps up to 3/4" but that's gonn use a lot of material for a gap that large. I reccomend using appropriate size backer rod, then top coat with this product. -MLC Remodeling

### ⭐⭐⭐⭐⭐ Durable and Stays Bonded
*by L***L on December 28, 2023*

Put in a channel drain and sealed to side walk with this product. Adheres nicely and easy to work with and dries fairly quickly. Good concrete joint sealer.

### ⭐⭐⭐⭐⭐ Sika Works
*by M***C on October 8, 2023*

After cleaning the expansion joint between the garage slab and driveway, I followed directions to ensure uniform depth with foam. Application was easy and required some smoothing, it turned out great. I highly recommend this product.

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-19*