Ensuring Seal Integrity for Product Safety and Quality
Have you ever considered the impact a compromised package seal can have on product safety and quality? In industries like pharmaceuticals and food, maintaining the integrity of packaging seals is crucial to ensure products remain uncontaminated, safe, and effective throughout their shelf life. Seal integrity testing plays a vital role in this process, preventing leaks, spoilage, and contamination.
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The Importance of Seal Integrity Testing
Seal integrity testing is an essential quality control measure in various industries, including pharmaceuticals and food. It ensures that packaging is correctly sealed and free from defects or leaks, maintaining product safety and quality.
Product Safety: A compromised seal can let air, moisture, and other contaminants enter the package, leading to spoilage, contamination, or degradation of the product. This not only affects the quality and efficacy of the product but also poses health risks to consumers.
Shelf Life: An intact seal extends the shelf life of products. For instance, food products exposed to air can spoil quickly. Ensuring seal integrity helps manufacturers extend the shelf life of their products.
Regulatory Compliance: Both the pharmaceutical and food industries must adhere to strict regulations and standards that mandate products meet specific quality and safety criteria. Seal integrity testing is often a regulatory requirement, and non-compliance can result in fines, product recalls, and reputational damage.
Cost Savings: Detecting seal defects early reduces the risk of product spoilage and waste, leading to significant cost savings and improved efficiency.
Customer Satisfaction: Consumers expect their products to be safe, fresh, and of high quality. By ensuring seal integrity, manufacturers can meet these expectations and build customer loyalty.
Seal Inspection Methods
Seal inspection is a critical component of package integrity testing. There are several methods for inspecting seals, including:
- Visual Inspection (ASTM F): This non-destructive test involves visually examining seals to identify potential issues such as gaps, wrinkles, or misalignments. While useful, it does not provide information about the strength or hermeticity of the seals.
- Dye Penetration Testing: A dye is applied to the outer surface of the package, and the package is pressurized. If there are any leaks, the dye will be drawn into the package, revealing the location of the leak.
- Bubble Leak Testing: The package is submerged in water, and air is introduced. Leaks are detected by observing bubbles. This method is destructive and makes the package unusable.
- Pressure Decay Testing: This method pressurizes the package and measures any pressure drop over time, indicating a leak. It is less sensitive to small leaks.
- Burst Testing: The package is subjected to increasing pressure until it bursts. This method assesses the package's strength but is destructive.
- Vacuum Decay Testing (ASTM F): At Oxipack, we utilize the vacuum decay method, a non-destructive technique that tests the seal and the rest of the package. This method is highly sensitive and suitable for various packaging types, including flexible pouches, sachets, containers, trays, cans, bottles, and caps.
Oxipack&#;s Seal Integrity Testing Solutions
At Oxipack, we offer a range of non-destructive seal integrity testing solutions designed to ensure product safety and quality. Our methods not only test the seals but also the entire packaging for leaks and defects, allowing approved packages to be returned to the production line without damage, thus saving costs and reducing waste.
Stationary Leak Tester (SLT): Our standard solution for pouch seal integrity testing, also providing information on the integrity of the entire package.
Stationary Leak Tester XS or M: Designed for testing rigid packaging, such as healthcare trays and flexible packages.
Can Leak Tester (CLT): Specifically for testing different types of cans.
Bottle Leak Tester (BLT): Ideal for testing the seal integrity of various bottle types.
Vacuum Leak Tester: Suitable for testing vacuum-sealed packages like coffee, rice, and yeast.
Seal integrity testing is a critical component of quality control in the pharmaceutical and food industries, ensuring product safety, regulatory compliance, and customer satisfaction. Oxipack's non-destructive leak detection solutions provide accurate and efficient testing for a wide range of packaging types. To learn more about our solutions and how quickly you can recoup the investment in our machines, we invite you to download our free white paper or contact us directly.
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Oil seals are vital to the daily operation of most factories and a wide range of industrial and commercial equipment. They are available in imperial and metric dimensions for both single- and double-lip design. Motors, Mechanical Hydraulic systems, pistons, and pumps utilize oil seals to protect internal components. Depending on the application, there are various material, size, and configuration options to best fit your needs. Learn more about oil seals, their composition, and the wide range of advantages they offer for your equipment.
What Is an Oil Seal, and What Are Its Elements?
An oil seal has two tasks: Keeping the lubricant in and keeping dirt and contaminants out of rotating components. This separation must be accomplished between surfaces in relative motion, usually a shaft or bearing inner ring and a housing. With correct installation, oil seals can also prevent seal leakage and maintain the lubricity of a bearing to ensure that the rotary shaft and its bearings remain fully functional.
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A typical oil seal consists of three common parts: an outer ring, the sealing element, and a spring. The exterior metal ring component provides strength and rigidity to the oil seal in the bore or recessed groove. Attached to that ring is the sealing element. This flexible interior component of the oil seal, the O-ring, prevents any fluid leaks between the shaft and housing. A spring ensures the constant pressure that deforms the O-ring, creating a reliable seal while maintaining radial force on the shaft.
Generally, oil seals vary in materials and types based on the corresponding application. Common materials include:
Nitrile Buna-N 70. NBR is compatible with numerous environmental conditions and is also relatively cost-efficient, which makes it one of the most popular and best-suited materials for the industry. Nitrile works well in the -30° to 250° F range and when exposed to anything from water and hydraulic fluids to gas, silicone, vegetable, or animal oils.
Fluoropolymer. FKMs, or Viton®, are perfect for high-temperature applications up to approximately 400° F. Additionally, they feature low compression characteristics. Seals of this material are highly resistant to solvents, gas, and petroleum or transmission oils, so they are a good fit for applications around these materials.
Silicone. Vinyl-methyl-silicones (VMQs) maintain performance in temperatures from -140° to 392° F. In addition, silicone is resistant to adverse weather conditions, light, and ozone. The healthcare and food industry sectors, as well as pneumatic and hydraulic systems, often use silicone.
Polyacrylate. Polyacrylate is a good combination of quality and cost benefits. It is highly resistant to oxidation and heated oil, withstanding temperatures from -25° F to 300° F. This material has applications in vehicle transmissions, shaft seals, O-rings, and more.
What Benefits Do Oil Seals Provide?
Oil seals can offer:
Low levels of friction. The lubrication within the seal ensures that the seal lip does not come into contact with the rotary shaft, eliminating the risk of burning or wear.
Compact size and lightweight. Oil seals possess a small and lightweight design, which belies their strong endurance capabilities.
Reliable, rugged performance. Even under harsh conditions or extreme temperatures, these durable components will maintain their seal.
Simple construction. Easy to handle and assemble, oil seals only take a matter of minutes to replace as technicians do not have to take a machine apart.
Versatility. Standard lip seals are best for applications within dry environments, or those lacking lubrication. Oil seals can act as an alternative with increased functionality.
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Why Should You Choose Emerson for Your Oil Seal Needs?
Choosing high-quality oil seals for your roller bearings, precision bearings, and more is an important decision, so at Emerson Bearing Company, we do more than manufacture oil seals. We draw from over 50 years of expertise in the area of bearings and bearing-related components so that our team can help you choose the right oil seals for your exact needs, regardless of the nature and complexity of your application. Should we not have a particular part in stock in our vast inventory, we also utilize a worldwide sourcing network to deliver on premium products. The Emerson team strives to provide a one-stop experience for our customers, from sourcing and budgeting to assistance in oil seal selection and timely delivery with same-day shipping options.
Our oil seals serve a wide array of industrial sectors both domestically and internationally, and we offer the following as part of our online product catalog:
We also believe very strongly in providing superior customer service and are here to support you 24 hours a day. Contact us to learn more about our oil seals and additional services.
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