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Two Component Silicone For Reusable Vacuum Bags

Vacuum Bag Silicone is great to make reusable silicone bags process for automotive industry like truck body panels, constructions of formula racing cars, manufacturing small/medium sized turbine blades, building cladding panels and architectural trim panels, marine industry, high-tech aerospace and defences industries is growing rapidly etc.

VB-25/VB-30 is a high-performance silicone moulding rubber which is designed for producing reusable vacuum bags, this formulation can also be used as a moldmaking material, if a fast cure is required. and it be processed via brushing, spraying, casting.

 

For the price, please contact us, A details quotation of this will be sent to you for reference.

For Sample: free provided, shipping cost afford by customer

MOQ: 200kgs

H.S Code: 39100000

Trade Term: EXW/FOB/CFR/CIF/DDU are available

Description

Core Product: Reusable Silicone Vacuum Bags
Ideal For: RTM, Resin Infusion, Vacuum Bagging (Aerospace, Automotive, 3D-Printed Composites, GRC/GRG/GFRC)

 

Key Advantages vs. Plastic Bags

  • Sustainability:♻️ Replaces 200+ plastic bags, cuts waste by 90%, fully recyclable, 50% lower CO₂ footprint.
  • Durability:200+ cycles vs. plastic’s 1-2 cycles.
  • Cost Savings:⬇️ 70% lower consumable costs, reduces labor & disposal fees (See Annual Cost-Benefit Table).
  • Performance:Withstands -50°C to 230°C (ideal for prepreg/HT resins), superior airtight seal on complex molds.
  • Convenience:Dishwasher-safe, easy cleaning, self-releasing from molds.

 

 

⚙️ Technical Specifications (Topsil  Silicone Rubber)

  • Tensile Strength:8-10 MPa
  • Tear Resistance:25-30 N/mm
  • Viscosity:10,000 mPa·s (low flow, precise replication)
  • Certifications:FDA-compliant (Food Grade), RoHS, REACH
  • Customizable:1mm to 10mm thickness, any size/complexity.

 

✅ Applications & Compatibility

  • Processes:RTM, Resin Infusion, Vacuum Debulking, Prepreg Curing.
  • Materials:Epoxy, Carbon Fiber, Fiberglass, RTM resins.

 

Operation Method (Spraying/Brushing)

  1. Prep mold tool (flange runners, vacuum channels).
  2. Spray/silicone onto mold.
  3. Apply peripheral silicone flange seal.
  4. Reinforce with cloth; add metal inserts.
  5. Cure in 20 mins.
  6. Self-releasing bag easily removed.
  7. Proceed with gel coat, reinforcement (glass/carbon + cores), flow mesh.
  8. Position silicone bag, connect vacuum & resin lines
  9. Infuse resin, cure part.
  10. Reuse bag (~200x).

 

Storage & Handling

  • Shelf Life:18 months from production.
  • Conditions:Cool, dry place in original sealed container.
  • Safety:🔐 Always consult MSDS before use.

 

Why Partner With Us?

  • Expertise:Decades in silicone manufacturing.
  • Speed:⏱️ Bulk orders in 2 weeks.
  • Support:Dedicated technical team.
  • Custom Solutions:Tailored for any application/part.

 

Summary: A high-performance, sustainable alternative to disposable plastic vacuum bags, offering significant cost savings, durability, and process efficiency for demanding composite applications under extreme temperatures.

 

(Based on testimonial: “Slash costs & improve consistency”)

For specific applications like GRC, Rapid Prototyping, or Climbing Holds, explore our specialized silicone solutions.

 

 

 

 

 

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CEO Note!

Hey,

This is Leo, Topsilsilicone ‘s CEO.

Thanks to visit our website, and I hope to be a friend with you here.

For the past 15+ years,  Topsilsilicone only do one thing that produces rtv silicone rubber for different kinds of mold making, life casting, pad printing, electronic potting,  vaccum casting etc,.

I have over 20 years of experience in rtv silicone rubber , I would like to share my experience in this field, and any questions you have about rtv silicone rubber, I’m happy to help you.

I provide a free consultant for many clients, and if you need any help on rtv silicone rubber, reach me any time.

Thanks

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