JY512 MS Polymer Sealants

Product Advantage

Eco-Friendly and Low-Impact Formulation

JY512 MS Polymer Sealants is a non-toxic, tasteless sealant with low VOC emissions, making it safe for indoor and outdoor use. It cures quickly without releasing harmful fumes, and its water-based cleanup (for uncured material) reduces environmental impact compared to solvent-based sealants. The product does not stain or corrode substrates such as concrete, marble, or metal.

Paint-Compatible Surface for Custom Finishes

Unlike many sealants that cannot be painted, JY512 MS Polymer Sealants features a paintable surface after curing. It adheres well to most decorative paints, allowing users to match the sealant to the surrounding surface color for a seamless, aesthetic finish. This makes it ideal for visible areas in construction and automotive interiors.

Superior Operability in Wide Temperature Ranges

As a single-component sealant, JY512 MS Polymer Sealants is easy to use with a standard glue gun. It maintains excellent extrudability between 4°C and 40°C, enabling application in cooler conditions where polyurethane sealants become too viscous. Its stable performance from -40°C to 100°C ensures reliability in extreme hot and cold environments.

Universal Adhesion Without Primer

JY512 MS Polymer Sealants offers exceptional adhesion to a broad range of substrates, including metal, glass, ceramics, wood, PVC, PC, PA, concrete, marble, and fiber-reinforced composites. No primer is required for most materials, saving time and reducing application costs while ensuring a strong, long-lasting bond.

Product Uses

Construction Interior Applications

Sealing of ceiling joints, wall cracks, and kitchen countertop gaps

Bonding and sealing of window frames, door frames, and interior trim

Sealing of bathroom fixtures (sinks, bathtubs, toilets) to prevent water leakage

Adhesion of decorative panels, wood flooring, and wall tiles

Construction Exterior Applications

Sealing of building facades, curtain walls, and exterior joints

Bonding of glass panels, aluminum frames, and stone cladding

Sealing of roof gaps, gutters, and downspouts to prevent water intrusion

Sealing of concrete expansion joints and masonry cracks

Automotive and Industrial Uses

Sealing of car interiors (dashboard gaps, door panels, headliners)

Bonding and sealing of automotive plastic subassemblies, roof liners, and trim components

Sealing of containers, portable houses, and modular structures

Bonding of composite materials (fiber-reinforced plastics, engineering plastics) in industrial equipment

Specialized Applications

Sealing of floor systems (residential, commercial, industrial) to prevent moisture and dust penetration

Adhesion of lightweight materials in furniture manufacturing and assembly

Sealing of electrical enclosures and components to protect against moisture and dust

Product Operate Guide

Pre-Application Preparation

Check compatibility: Confirm that JY512 MS Polymer Sealants is suitable for the target substrate by testing a small sample in an inconspicuous area.

Prepare the environment: Ensure the application area has a temperature between 4°C and 40°C and relative humidity of 40% to 80% for optimal results.

Clean the surface: Remove all dirt, grease, oil, dust, and moisture from the substrate using a clean cloth and isopropyl alcohol. Allow the surface to dry completely before application.

Apply masking tape: Affix temporary protective tape along the edges of the sealing area to create clean lines and simplify cleanup.

Step-by-Step Application

Cut the sealant nozzle: Use a utility knife to cut the nozzle at a 45-degree angle. The diameter of the nozzle opening should be smaller than the thickness of the gap to be sealed, allowing the nozzle to reach 1/2 the depth of the gap.

Load the sealant: Insert the JY512 MS Polymer Sealants cartridge into a caulking gun, ensuring it is properly secured.

Extrude the sealant: Hold the caulking gun steady and squeeze the trigger to extrude the sealant. Move the gun slowly and uniformly to fill the gap completely with a continuous, uniform bead. Avoid quick movements, as this can create bubbles or holes.

Tool the surface: Within 5 to 10 minutes of application (before the sealant becomes tack-free), use a damp finger or a tool to smooth the surface of the sealant. This ensures proper contact with the substrate and a neat finish.

Post-Application Finishing

Remove masking tape: Peel off the temporary protective tape immediately after tooling the sealant. Do not wait for the sealant to cure, as this may cause the tape to stick.

Allow curing: Keep the sealed area free from moisture, dust, and mechanical stress during the curing period. Avoid touching or disturbing the sealant until it is tack-free.

Cleanup: Use isopropyl alcohol to remove any uncured sealant from tools or surfaces. Cured sealant can be removed with a sharp tool or sandpaper.

1.Surface Cleaning

2.Affixed Tape

3.Sealant Mouth Cutting

4.Injection

5.Surface Fixing

6.Tape Remove

7.Finish