Best Practices for Storing Silicone Rubber Keypads & Components

Customers often ask, “What is the shelf life of your molded silicone keypads and components?” While the answer may seem simple, shelf life depends on several factors. It’s important for manufacturers using silicone rubber to understand how to properly store these components and determine an appropriate shelf life based on their product requirements. In this blog, we’ll explore key storage guidelines and industry recommendations to help maintain the quality and performance of silicone parts over time.

Shelf Life vs. Service Life: What’s the Difference?

• Shelf Life refers to how long a product remains fit for use, sale, or consumption while in storage.
• Service Life describes the duration a product performs effectively while in use.

Both shelf life and service life depend on environmental conditions, proper handling, and whether parts meet the necessary physical requirements when put into service.

Guidelines for Storing Silicone Rubber Components

The Society of Aerospace Engineers (SAE) has set recommended storage practices for elastomers in document ARP5316, which provides a solid foundation for silicone storage. The three most critical factors that impact the shelf life of silicone parts are temperature, humidity, and light exposure.

1. Temperature Control

• SAE recommends storing elastomers between 59°F and 100°F, with an optimal temperature of 68°F.
• Avoid extreme heat or freezing temperatures, which could affect the flexibility and structural integrity of silicone over time.

2. Humidity Management

• To prevent moisture damage, silicone should be stored in an environment where condensation does not form.
• If parts are not stored in moisture-proof sealed bags, the humidity level should be kept below 75% to avoid contamination or degradation.

3. Light Exposure

• Silicone rubber is sensitive to UV rays and intense artificial lighting.
• To protect parts, store them in sealed, opaque bags away from direct sunlight or harsh lighting sources.

How Long Can Silicone Components Be Stored?

According to SAE ARP5316, silicone rubber has an unlimited shelf life under proper storage conditions. However, some industry recommendations suggest a practical cap of 20 years. Keep in mind that these are only guidelines—the actual shelf life depends on the specific product design, coatings, or adhesives used. Regular inspections should be performed to check for any signs of wear, such as cracking, discoloration, or changes in flexibility.

Our Expertise in Silicone Storage and Manufacturing

At SiTech, we understand the importance of proper storage and handling to preserve the integrity of silicone parts. With decades of experience working with liquid silicone rubber (LSR), we can help you develop a storage strategy tailored to your products and manufacturing needs.

If you have any questions about storing silicone rubber components or need assistance with your project, feel free to call us at 757-887-8488 or request a quote online.

Conclusion

Proper storage of silicone components is key to ensuring their performance, reliability, and longevity. By following industry best practices—controlling temperature, managing humidity, and protecting parts from light exposure—you can maximize the shelf life of your silicone keypads and components. Whether you’re preparing for long-term storage or planning product use, SiTech is here to provide the expertise you need.