Dongguan Ningdao Rubber & Industry | Original Wacker ELASTOSIL® G3242/G3243/G3244 Primer

20 Years of Specialization｜Solving Silicone Roller Delamination Issues｜High-Strength Bonding, Shear-Resistant & Aging-Proof

1. Brand Strength and Product Overview

Dongguan Ningdao Adhesive Industry Co., Ltd.Over 20 years of expertise in silicone materialsAn official core partner of Wacker Chemie AG (Germany), we specialize in the R&D and sales of imported organic silicone additives and specialty silicones, serving thousands of silicone roller and silicone-coated product manufacturers nationwide.

Wacker ELASTOSIL® G3242/G3243/G3244 areHTV High-Temperature Vulcanizing Silicone Rubber Primeris an organic solvent solution of functional silanes, specifically engineered for high-strength bonding between silicone rubber and metal/rigid substrates, optimized for overmolding production.Delamination, peeling, adhesive failure, and high rework ratesAddresses core pain points. Three models precisely adapted for precision small parts, heavy-duty rubber rollers, and large-area coating across all scenarios. German original quality ensures stability—the high-performance primer essential for mass production of silicone-coated products.

II. Core Product Advantages

1. Authentic German import, 100% genuine guarantee

Genuine WACKER product, shipped in original packaging. Authenticity is traceable to eliminate counterfeits and adulteration. Prevent costly bond failures and rework caused by inferior primers. Consistent, reliable quality for mass production.

2. Complete coverage for all three models with precise adaptation for every scenario.

Low-viscosity lightweight, high-solid strong-adhesion, and vibrant red options meet all production needs for rubber rollers and lagging. Ningdao's professional team provides free selection guidance tailored to your specific operating conditions.

3. High-strength bonding, shear-resistant and anti-aging with no delamination

Forms an irreversible, high-strength bond after vulcanization. Resists mold-press shear stress and withstands long-term aging. Ideal for high-speed operation and heavy-duty use in printing, dyeing, and transmission rubber rollers. The iron core and silicone never separate—drastically reducing post-sales complaints.

4. Streamlined construction for mass factory production

Can be applied by brushing or spraying; simply allow brief flash-off of solvents before vulcanizing and bonding. For high-shear molding applications, a simple bake at 130°C is sufficient—no specialized skills required. This boosts production efficiency and reduces labor costs.

5. In-stock in Dongguan with fast shipping—cut costs, boost efficiency, and avoid delays.

In-stock at local warehouses with 48-hour fast shipping. Supports small-batch sampling and large-volume supply. Volume discounts available to align with your production schedule and avoid delays.

6. Professional expertise, worry-free service throughout

Free samples, process guidance, and on-site technical support to resolve end-to-end challenges—including primer application, vulcanization compatibility, storage, and maintenance—helping customers reduce rework and improve yield rates.

7. Moisture-resistant and easy to store, reducing raw material waste.

Long shelf life in sealed packaging. Reseal immediately after opening to prevent moisture-related degradation. Supports portioning into smaller packs for on-demand use, eliminating waste and reducing overall usage costs.

3. Product Technical Specifications

3.1 Basic Performance Specifications

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3.2 Quick Reference: Three-Model Application Scenarios

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IV. Core Factory Pain Points & Professional Solutions

1. Pain points: Silicone overmolding delamination and layer peeling after vulcanization; high rework rate persists.

Solution: Use Wacker G3243/G3244 high-performance primer to form an irreversible, high-strength bond after curing, securely bonding silicone rubber to metal.Eliminate delamination and adhesive failure; reduce rework rate by 80%+.。

2. Pain pointsLong-term use of rubber-coated iron cores on rollers leads to cracking and peeling, resulting in numerous after-sales complaints.

Solution: Features excellent anti-shear and aging resistance, making it ideal for long-term high-speed operation and heavy-load applications in printing, dyeing, and transmission rollers.Core and silicone remain bonded; after-sales complaints drop significantly.。

3. Pain pointsLarge rubber rollers: Applying primer over a wide area can lead to missed spots, causing poor adhesion in those areas.

Solution: Recommended G3244 red color version; coating marks are clearly visible.No missed spots, no blind areas.Apply in large areas at once for consistent adhesion.

4. Pain pointsPrecision small parts and narrow gaps; poor primer leveling and uneven coating.

Solution:G3242 Ultra-low viscosity (6 mPa·s) with exceptional leveling; penetrates fine gaps.Ultra-thin uniform film formationMore secure, bubble-free bonding for precision small parts.

5. Pain points: Primer turns cloudy and loses effectiveness after opening, leading to significant raw material waste.

SolutionNingdao provides scientific storage guidance. Seal immediately after opening to prevent moisture-related degradation. Supports portioning into smaller packages.On-demand usage to eliminate ingredient waste。

6. Pain pointsHigh shear forces during molding strip off the primer, causing adhesion failure.

Solution: Under high-shear conditions, apply a simple basecoat bake at just 130°C.Double the shear strength of the coatingMolded to prevent peeling or shifting, ensuring high bonding success rates.

7. Pain points: Unstable primer batch quality leads to significant fluctuations in mass production yield.

Solution: Ningdao supplies Wacker products in their original factory packaging.Extremely consistent batch qualityMeets international chemical industry standards, with stable mass production quality and consistently high yield rates.

V. Precision Application Scenarios

1. Silicone Rubber Roll Factory Exclusive

• Printing rubber rollers, dyeing and printing rubber rollers, industrial drive rubber roller iron core bonding

• Lamination of metal cores for coating and conveying rollers with HTV silicone rubber

• Primer treatment of substrate before rubber covering for various industrial rollers

2. Dedicated to silicone rubber molding factories

• High-strength bonding for silicone-encased metal hardware and silicone-encased plastic parts

• Industrial silicone overmolded parts and silicone overmolded mold products

• Rubber-molded products requiring high-strength silicone bonding to substrates

6. Standard Usage Process (Simple and Easy to Operate)

1. Substrate Treatment: Thoroughly degrease and clean the metal surface; perform sandblasting if necessary to ensure the substrate is free of impurities and oil.

2. Coating ApplicationApply the primer evenly by brushing or spraying to ensure complete, uniform coverage with no missed spots.

3. Air-dry: Allow short-term ventilation to let solvents fully evaporate;

4. Special operating conditions: High-shear molding conditions; bake primer at 130°C. Adhesive must be completely dry before vulcanization.

5. Sulfur vulcanization bonding: Molded via high-temperature vulcanization using HTV silicone rubber.

7. Storage and Warranty

• Storage Conditions: Sealed in original packaging; store at 25°C, away from light, in a dry and well-ventilated area.

• Shelf LifeSealed in original packaging: ≥ 6 months. Freshly manufactured products have a shelf life of > 12 months. See product label for batch date.

• Usage Tips: Primer is moisture-sensitive. Seal immediately after opening. Use small packages as needed to prevent clouding or loss of effectiveness due to exposure to air and moisture.

8. Ningdao Rubber Industry – A Powerhouse You Can Trust

✅ 20+ years of experience in the silicone industry, specializing in silicone bonding solutions

✅ Official authorized partner of WACKER, 100% authentic imported products with traceable verification

✅ G3242/G3243/G3244 – Three models available to solve all your packaging bonding challenges in one place

✅ Free samples + process guidance + on-site technical support – worry-free service throughout

✅ Dongguan warehouse with stock ready; ships within 48 hours. Bulk orders get better pricing.

✅ Designed for high-volume production in rubber roller and coating plants—reduces costs, boosts efficiency, and improves yield rates.

IX. Consulting Procurement

Dongguan Ningdao Adhesive Co., Ltd. | 20+ years of dedicated Wacker primer supply

Core Services: Free samples, bulk supply, and customized technical guidance

Featured Products: Wacker G3242/G3243/G3244 Primer, Specialty Silicone Rubber, Silicone Treatment Agent

Vactec Primer, G3243 Primer, G3244 Primer, Silicone Primer, Metal Bonding Primer, Silicone Roller Priming Solution, Silicone Rubber Peel-Off Solution

Contact us for samples or bulk orders to solve your silicone bonding challenges and enable efficient mass production.