Vacuum packaging machine sealing silicone strip SF-NC-302 comprehensive guide: selection, advantages and applications

Vacuum packaging machine sealing silicone strip SF-NC-302 comprehensive guide: selection, advantages and applications

Discover the SF-NC-302 Sealing Silicone Strip for Vacuum Packaging Machines: A high-performance, heat-resistant component crafted with premium food-grade silicone. This comprehensive guide details its key advantages, technical specifications, application scenarios, and addresses 10 frequently asked questions. Designed to help you make informed selections and maintain optimal performance, this guide elevates both the sealing quality and operational efficiency of vacuum packaging systems.

product presentation

The SF-NC-302 sealing silicone strip is a critical component in vacuum packaging equipment, positioned directly above the heating strip. Its primary function during vacuum sealing is to apply uniform and intense pressure on the packaging bag, ensuring tight adhesion with the heating strip. This guarantees the formation of a fully sealed, flat, and durable weld seam during the heat-sealing process. Engineered with specialized formulations and manufacturing techniques, the SF-NC-302 is specifically designed to withstand frequent operation, high temperatures, and high-pressure environments. As a vital accessory, it ensures long-term stable performance of vacuum packaging machines and maintains optimal product yield rates.

 product superiority

Excellent sealing performance: High elasticity and moderate hardness (60°±5°) can perfectly fit a variety of material packaging bags, even if the bag opening is not smooth, can provide uniform pressure, prevent air leakage.

Excellent temperature resistance: the range of-60℃ to +250℃, can withstand the high temperature impact of sealing instantaneously without melting, deformation or release of harmful substances, long life.

Safety and environmental protection: use high quality food grade silicone rubber raw materials, comply with relevant safety standards, non-toxic and tasteless, can be directly contacted with food packaging, safe and secure.

Excellent durability: excellent tear and aging resistance, can resist long-term compression and frequent use fatigue, wear and tear, reduce the frequency of replacement.

Universal: Universal black design, suitable for most brands and models of vacuum packaging machine. At the same time, it supports customization to meet the needs of special size and color.

 application area

SF-NC-302 sealing silicone strip is widely used in industries requiring vacuum or modified atmosphere packaging:

Food industry: meat, seafood, pickles, snacks, fruits and vegetables and other products vacuum preservation packaging.

Electronic industry: moisture-proof and oxidation-proof vacuum packaging of electronic components and circuit boards.

Pharmaceutical industry: sterile and antibacterial packaging of medical devices, medicinal materials and reagents.

Chemical industry: rust and corrosion protection packaging for precision instruments, metal products and chemical raw materials.

Technical specifications of SF-NC-302 sealing silicone strip for vacuum packaging machine

Vacuum packaging machine sealing silicone strip SF-NC-302 FAQ (10 questions)

1. How to judge that my vacuum packaging machine needs to replace the sealing silicone strip?

A: When the sealing is not tight, air leakage, wrinkled sealing line, or there are burnt marks, it is likely that the silicone strip is aging, losing elasticity or broken, and needs to be replaced in time.

2. Is SF-NC-302 silicone strip suitable for all brands of vacuum packaging machine?

A: SF-NC-302 is a universal model, but there are many types of vacuum packaging machines. Before purchasing, please make sure that the size (length, width, height) and shape of the old silicone strip on your equipment are consistent with SF-NC-302, or consult the supplier directly.

3. Why does the silicone strip need to have high temperature resistance?

A: When sealing, the lower heating strip will instantly reach high temperature (usually above 200℃). The silicone strip as a pressure strip must be able to withstand this high temperature briefly without damage, otherwise it will stick to the packaging bag or rapidly age.

4. What is special about food-grade silicone strips?

Answer: Food-grade silicone has passed strict food safety tests to ensure that no harmful substances are released at high temperatures and ensure the hygiene and safety of packaged food.

5. What does the hardness of the silicone strip (60°±5°) mean?

A: Hardness is the key to sealing effectiveness. Too hard may lead to uneven sealing pressure, too soft may lack support. Hardness around 60° can balance elasticity and support, suitable for most packaging scenarios.

6. How to install the new SF-NC-302 silicone strip correctly?

Answer: First cut off the power supply, remove the old silicone strip, clean up the debris in the installation slot. Then put the new silicone strip into the slot smoothly, ensure that it is completely clamped in place, no gaps.

7. How to clean and maintain the silicone strip?

A: Regularly wipe the surface with a soft cloth dipped in a small amount of alcohol or neutral detergent to remove stains and residues. Avoid using sharp objects to scrape, and keep away from strong acid and alkali corrosive liquids.

8. What is the normal service life of a SF-NC-302 silica gel strip?

A: The life depends on how often it is used, the material of the packaging and the working environment. Under normal use, it can generally last several months to a year. Frequent use or items with sharp edges on the packaging will shorten its life.

9. What should I do if plastic slag is stuck on the surface of silicone strip?

A: It should be gently scraped off with a wooden or plastic scraper while the silicone strip is still warm (be careful not to burn). Do not use a metal blade to avoid scratching the silicone surface.

10. Can I customize the SF-NC-302 silicone strip with special size or color?

A: Yes. Many manufacturers offer customization services, and you can customize the size, hardness and even color of the silicone strip according to the specific needs of the device.

 epilogue ：

Selecting the right sealing silicone strip is key to maintaining efficient operation of vacuum packaging machines. The SF-NC-302 stands out with its reliable performance and premium materials, making it an ideal replacement for aging or failed silicone strips. Proper selection, regular maintenance, and timely replacements can effectively ensure both packaging quality and production efficiency.