Advanced Water-Based Sealer Release Agent for Rubber Molding

Lubekote 9165C is a high-performance, water-based sealer release agent specifically engineered for the rubber industry. This innovative formula is designed to create a durable, protective barrier on mold surfaces, facilitating easy demolding of even the most challenging rubber compounds. Its unique sealer property ensures a flawless surface finish by preventing knit lines, making it an indispensable solution for manufacturers of natural rubber, EPDM, acrylic ester, vinyl acrylate, and demanding elastomers like fluororubber and HNBR. This ready-to-use agent boosts productivity by enabling multiple releases per application while guaranteeing a contamination-free surface.

Product Overview & Description

As a specialized sealer release agent, Lubekote 9165C addresses two critical needs simultaneously: it acts as a effective mold release and seals the mold surface to prevent defects. It is perfect for complex molds where air entrapment and knit lines are a common issue. This water-based emulsion forms a resilient film that withstands the molding process, providing numerous release cycles before reapplication is needed. Its non-transferring formula ensures that the final rubber parts are not contaminated, preserving their inherent properties and readiness for secondary operations. This makes it a superior, environmentally conscious alternative to traditional solvent-based systems.

Key Features & Advantages

• Superior Sealer Properties: Effectively seals the mold surface to prevent knit lines and air traps, resulting in perfectly formed, high-integrity rubber parts with an impeccable surface finish.

• True Semi-Permanent Performance: Delivers multiple consistent release cycles from a single application, drastically reducing downtime for respraying and significantly increasing production output.

• Water-Based & VOC-Free: Contains no solvents or volatile organic compounds, ensuring a safer working environment, reduced environmental impact, and compliance with stringent air quality regulations.

• Extremely Low Transfer: Formulated to minimize migration onto the molded part, which prevents contamination and preserves the rubber's properties for bonding or painting.

• Broad Material Compatibility: Excellently suited for a wide range of rubbers, including natural rubber, EPDM, acrylic ester, vinyl acrylate, and is highly effective for difficult-to-release materials like fluororubber and HNBR.

• Ready-to-Use Convenience: Requires no mixing straight from the container, though it can be diluted with deionized water for finer control or extended coverage.

Technical Parameters / Specifications

Application Guidelines

For optimal results, begin with a meticulously cleaned mold. Shake or stir the product thoroughly before use to ensure consistency. Lubekote 9165C is ready to use but can be diluted with 1-3 parts deionized water for specific application needs. Apply a single, thin, and uniform coat to the mold surface using a spray or cloth. Allow the water carrier to evaporate completely, leaving behind the active sealer and release film, before initiating the molding cycle. Reapplication is only necessary after several successful demolding cycles.

Handling & Storage Precautions
For industrial use only. Avoid prolonged skin contact. Use appropriate personal protective equipment (PPE). In case of eye contact, rinse immediately with plenty of water and seek medical advice. Do not allow the product to freeze, and store in a cool, dry place to maintain its efficacy throughout its 12-month shelf life.

Frequently Asked Questions (FAQ)

Q: What makes Lubekote 9165C a "sealer release agent"?
A: Unlike standard release agents, it combines two functions. It creates a release film to prevent sticking and simultaneously seals the mold surface. This sealing action prevents air from being trapped and stops knit lines from forming on the rubber part, ensuring a perfect surface finish.

Q: Which rubber types is this agent compatible with?
A: It is highly effective for natural rubber, EPDM, acrylic ester, and vinyl acrylate rubber. It is also specifically recommended for difficult-to-demold compounds such as fluororubber (FKM) and HNBR.

Q: How many releases can I get from one application?
A: As a high-performance semi-permanent release agent, Lubekote 9165C is designed to provide multiple release cycles per application. The exact number depends on the specific mold geometry, rubber compound, and curing conditions.

Q: Does it need to be diluted?
A: It is ready to use straight from the container. For some applications, particularly for achieving an ultra-thin film, it can be diluted with 1-3 parts deionized water.

Q: What is the main advantage of it being water-based?
A: The water-based formula means it contains no solvents or VOCs. This makes it safer for operators, better for the environment, reduces fire hazard, and helps factories meet strict regulatory standards.