The demand for high-performance, tailor-made moulded components has never been greater. From sealing applications to vibration or shock isolation and complex industrial solutions, silicone moulding plays a critical role in delivering resilient and adaptable products. Seal ‘n Devices specialises in custom silicone moulding products that cater to a broad spectrum of industries and applications, offering unmatched precision, durability, and design flexibility.
Whether you require custom moulded parts for automotive, aerospace, mining, agriculture, or food-grade applications, our in-house expertise ensures that each product is engineered to meet your exact specifications.
Why Choose Custom Silicone Moulded Products?
Tailored to Fit Your Design and Functionality
Unlike off-the-shelf alternatives, custom silicone moulding allows for precision-engineered components designed around your unique technical needs. From the shape and hardness to colour and resistance requirements, every detail is fully customisable.
Excellent Temperature Ranges
Hi Temperature Silicone Moulded products are often used in applications where other moulded natural or synthetic rubbers will not work, silicone moulded products can handle between -60°C and +230°C with some special silicone compounds reaching up to +300°C
Chemical Resistance
Silicone offers outstanding thermal stability and chemical resistance, making it ideal for use in extreme environments. Whether exposed to high heat, UV radiation, or corrosive substances, silicone components retain their shape and functionality over extended periods.
Versatility Across Applications
Silicone’s flexible and durable properties make it suitable for a wide range of applications, including electrical insulation, waterproof sealing, food-safe equipment, and vibration damping or shock isolating products. Seal ‘n Devices’ custom moulded silicone products leveraged in various sectors such as:
- Automotive: Gaskets, bushings, vibration isolators
- Electronics: Protective enclosures,seals and electrical insulators
- Medical and Food: Food-safe silicone for hygiene-critical applications
- Industrial Machinery: Buffers, mountings, anti-vibration mounts and shock isolators
Our Core Capabilities
We combine engineering excellence with advanced materials to deliver products that exceed expectations. Our expertise spans several key areas:
- Rubber, Silicone and Polyurethane Moulding: We manufacture a wide range of moulded parts using silicone, natural rubber, synthetic rubber and polyurethane compounds, selected based on required hardness, abrasion resistance, temperature tolerances and applications. These materials are cover a wide variety of applications flexible applications so let our sales team assist you with the correct material.
- Custom Silicone Moulded parts: From inception to the final moulded products, all stages are performed in house.
- Rubber-to-Metal Bonded Products: We excel in the design and manufacture of rubber-to-metal bonded components. This includes engine mountings, suspension components, and industrial isolators where the combination of flexibility and strength is essential.
- Anti-Vibration Mountings: Custom anti-vibration mountings reduce mechanical noise and isolate vibrations in machinery, enhancing equipment lifespan and operator safety. Our moulded silicone and rubber mountings are designed to suit the dynamic loads of your application. Silicone anti vibration mountings will be used where there is a higher temperature requirement or a very soft compound is necessary.
- Buffers and Bushes: Seal ‘n Devices produces durable rubber and silicone buffers and bushes that absorb shock and motion. These are critical in automotive systems, rail, and heavy-duty industrial machines.
The Silicone Moulding Process
Our process is designed to ensure the highest level of precision, repeatability, and performance:
- Design Consultation: We begin with an in-depth analysis of your project to determine the ideal material and design.
- Tooling and Prototyping: Custom tooling is designed and manufactured for precision moulding. Seal ‘n Devices runs a large full tool room, with several CNC machining centres, CNC lathes with the expert toolmakers and software packages to go with it.
- Moulding Process: This can be broken down into three methods that we use to mould our silicone parts: compression moulded silicone parts, transfer moulded silicone moulded parts and injection moulded silicone parts the method will depending on the size, complexity and volume required.
- Quality Control: Each product undergoes rigorous quality inspection and testing to meet ISO and industry-specific standards.
- Delivery and Support: We provide nationwide and international delivery, along with ongoing technical support for all our clients.
Applications of Custom Silicone Moulding
- Silicone seals and gaskets
- O-rings and washers (specialized sizes)
- Bump stops and shock absorbers
- Electrical insulators, silicone covers and silicone protectors
- Valve and pump components
- Custom silicone enclosures and silicone boots
- High-precision medical silicone moulded parts
Industries We Serve
- Automotive
- Mining and earthmoving
- Electronics and telecommunications
- Industrial manufacturing
- Construction
- Aerospace and defence
- Marine and offshore
- Medical and food processing
Why Seal ‘n Devices?
- Over 35 years of experience
- Locally manufactured in South Africa, design, tooling and moulding all in house
- ISO-certified processes
- Customised engineering support,
- Expertise around all moulded products
- Competitive pricing, with high capacity and scalability
Our team of engineers and technical experts is committed to delivering cost-effective and high-performance solutions tailored to your operating environment.
Frequently Asked Questions (FAQs)
What is custom silicone moulding?
Custom silicone moulding is the process of creating tailored silicone rubber parts using moulds made to your specific design. It ensures that the end product fits your application’s dimensions, tolerances, and environmental conditions.
What types of silicone do you use?
We work with a range of silicone compounds, including high-consistency rubber (HCR), and food-grade or medical-grade silicones, depending on your application. All of our silicone parts are moulded/vulcanised under heat and pressure.
Can I get a small batch produced?
Yes, we cater to both low and high-volume production runs. Our services encompass prototyping, small-batch production, and full-scale manufacturing.
How long does it take to produce a custom moulded part?
Lead times vary depending on complexity, tooling requirements, and volume. On average, prototyping takes two to four weeks, with full production commencing shortly after approval.
Do you provide design assistance?
Absolutely. Our in-house engineers can assist you in refining your design to ensure it is suitable for moulding and meets performance requirements.
Are your silicone mouldings food-safe or medical-grade?
Yes, we offer silicone moulding using food- and medical-grade materials upon request.
Can silicone be bonded to metal or plastic?
Yes, our rubber-to-metal bonded services include silicone-to-metal bonding, ensuring structural integrity and long-term performance under vibration and stress.
Get in Touch with Seal ‘n Devices
We transform your ideas into tangible, high-performance silicone solutions. Whether you need a single prototype or large production volumes, our silicone moulded products services are designed to deliver quality, reliability, and cost-effectiveness.
Contact us today to discuss your project. Your application is unique — your silicone mouldings should be too. Let us help you create the perfect fit.
