Shin-Etsu Japan 3 4T Primer

•         Shin-Etsu 3 4T Primer – The Golden Duo for Silicone Overmolding and Roller Manufacturing: High Value, Zero Delamination! Custom-engineered for roller mills and silicone overmolding applications to eliminate peeling.

•         ✅ Superior high-temperature resistance ✅ 50% increase in bond strength ✅ Genuine Shin-Etsu Japan

Silicone Rubber Primer – Shin-Etsu 34T (Direct from Ningdao)

l  Say goodbye to peeling rubber coatings! Shin-Etsu 34T primer bonds silicone and metal like welding.

l  The veteran's secret weapon at the rubber calendering plant: Shin-Etsu 34T. Strong adhesion, zero rework, and double your production efficiency.

l  Experiencing bubbles during hot vulcanization bonding? Try Shin-Etsu 34T Primer for instant adhesion and to eliminate delamination risks.

l  Still struggling with weak bonding on silicone hardware? Shin-Etsu 34T is engineered for high-temperature vulcanization adhesion, delivering up to 50% stronger bonds.

l  Original Shin-Etsu 3 4T: The primer trusted by the roller coating industry for 20 years, with bond strength proven in peel tests.

l  【Why Choose Shin-Etsu 34T?

✅ Genuine product guaranteed: Direct from Shin-Etsu Chemical, Japan. Batch numbers are traceable. Counterfeit products will be compensated tenfold! Quality matches flagship product 18B at a more affordable price.

✅ Superior AdhesionSpecializes in bonding challenges for substrates such as silicone, metals (steel, aluminum, copper), glass, and ceramics. Eliminates delamination and ensures bond strength increases by ≥300%.

✅ Industry-Specific SolutionsEssential for rubber roller and silicone coating factories! Effectively solves demolding tearing and poor adhesion issues, boosting yield rates.

✅ Effortless and efficient operationsLow to medium viscosity; supports brushing, spraying, or dipping. Cures rapidly at room temperature or with heat. Ideal for assembly lines and compatible with all equipment.

Precision coverage for real-world scenarios—results you can see.

✔ Roller ManufacturingThe metal core is firmly bonded to the silicone layer, preventing delamination and adhesive failure to extend the service life of the rubber roller.

✔ Silicone overmolding: Secondary overmolding of metal/plastic parts to prevent peeling and cracking, with strength comparable to one-piece molding.

✔ skeleton bondingAutomotive and mechanical seal skeleton overmolding; cookware and tableware hot-vulcanized overmolding—secure and reliable.

✔ Rugged environmentsOil-resistant and acid/alkali-resistant; ideal for sealing in chemical machinery, high-temperature equipment, and similar applications.

Clear Technical Specifications

[Lab-Verified]

Rubber Compound; Vulcanization Type; Bonding Result

Ningdow CND-2150 Flat Vulcanization/Oven Post-Vulcanization Silicone Rubber Breakdown

Momentive TSE221-5U Plate Vulcanization/Oven Post-Vulcanization Silicone Rubber Failure

Tested according to ASTM D429-B method

User Guide — Standardized Operations for Better Results

1.         Surface TreatmentThoroughly clean the substrate surface to ensure it is free of oil, rust, and dust.

2.         Coating MethodApply 34T evenly by brush or spray to the substrate surface. A thin coat is sufficient (recommended thickness: 0.5μm).

3.         Drying and curing conditionsRoom Temperature Curing: Let stand at room temperature for 30 minutes until the solvent has fully evaporated and the surface is completely dry. Heat Curing (Recommended): Bake at 100-150°C for 10-15 minutes for best results.

4.         Silicone BondingAfter the primer has fully cured, immediately proceed with silicone injection molding or hot vulcanization bonding.

FAQ (Customer Questions)

1. Q: How to choose between Shin-Etsu 3 4T and 1 8B?

Answer: Based on production verification by over 20+ customers at Dongguan Ningdao Company in 100, the following summary is provided: The two options have similar functionality.34T is a reddish-brown surface treatment that resists missed spots and offers superior high-temperature performance.Finished products can withstand more demanding high-temperature conditions (up to 300°C), but require special high-temperature-resistant silicone rubber for coating. For any questions, please contact a Ningdao sales engineer; 34T is an opaque translucent treatment agent with better cost-performance and can also endure high temperatures (above 200°C in milky white).

2. Q: Can 34T be used to bond silicone-coated gold-plated metal parts or engineering hard plastics (e.g., PA, PPS)?

Answer: Yes! 18B delivers excellent adhesion to metal-plated parts and rigid engineering plastics, making it the ideal choice for overmolding metals, plastics, and other hard substrates. Due to the wide variety of base materials, we recommend conducting a small-batch trial before full-scale production.

3.Q: How long can the 34T primer be stored before molding?

Answer: It is recommended to apply adhesive and perform hot vulcanization on the same day. If a delay to the next day is unavoidable due to process constraints, ensure proper protection against moisture and dust.

Act Now to Get Ahead!

•         🔥 Wholesale Direct from Source · Volume Discounts AvailableDirect from factory, in-stock and fast delivery with technical support!

•         🔥 Sample Request ChannelClick to inquire for a free sample test—verify results before ordering!

•         🔥 Authenticity GuaranteedBatch number verifiable on the official website. Tenfold compensation for counterfeits. Worry-free procurement!

•         🔥 Supply Assurance: Year-round stock, worry-free supply!

•         Get 8B quality at a 4T price—boost productivity and gain a competitive edge!

Company Strength

•         20 years of industry experienceServing 0+ rubber/silicone overmolding factories and manufacturing plants.

•         100% Shin-Etsu Genuine Import from Japan, with a clear price advantage.

•          Professional Technical TeamOne-on-one solutions for bonding challenges.