Exit

Author Archives: wvandenberg

  1. Safe Storage of Rubber Products

    Leave a Comment

    Environment Impacts Rubber Product Shelf Life

    It is very important for the user to know, the material properties and expected shelf-life of rubber products in storage can be adversely affected by the following:

    • Temperature:

      Storage temperatures between 72° F (22° C) and 32° F (0° C) are ideal. If stored below 32° F, some products stiffen and require warming before use. Likewise, Rubber products should not be stored near sources of heat, such radiators and base heaters.

    • Humidity:

      Rubber products should not be stored under conditions of high or low humidity. Certain compounds of rubber are susceptible to mold degradation.

    • Ozone:

      To protect against the adverse effects of ozone, rubber products should not be stored near electrical equipment that may generate ozone and should not be stored for any lengthy period in geographical areas of known high ozone concentrations.

    • Sunlight:

      Avoid exposure to direct and reflected sunlight due to the ability of ultraviolet light to degrade rubber.

    • Oils, Solvents & Corrosive Liquids:

      The material properties and hence, expected shelf-life of different elastomers of rubber will be adversely affected if they are exposed to or come into contact with certain oils, solvents and/or corrosive liquids.

    • Fumes:

      As is the case with oils, solvents and corrosive liquids, certain corrosive fumes will also adversely affect the material properties and expected shelf-life of rubber.

    • Insects, Rodents & Other Vermin:

      It’s true, vermin such as insects, rodents and many others can degrade the material properties of rubber. How? They will chew it up, eat it, nest in it and worst of all urinate on it. The acid in animal urine can have an extremely adverse effect on rubber

    Finally, Rubber should be stored free from super imposed tensions and compressive stresses or other potential causes of physical deformation. When packing rubber products in a strain-free condition, if possible store them in their original packaging.

    Recommended Shelf Life: 

    The recommended shelf life generally associated with products fabricated from various polymers is based on information provided in MIL-HDBK-695E titled “Military Standardization Handbook Rubber Products: Recommended Shelf Life.”  That information represents average shelf life under normal storage conditions and should be used for guidance purposes only.  Shelf life otherwise varies depending on product specifications and compound design.

    In addition, if you liked this article check out our guide to Choosing an Elastomer.

  2. What’s the Difference Between a Gasket and a Seal?

    Leave a Comment

    It is a common misconception that gaskets and seals are the same thing.

    While it is true they perform similar functions in preventing leaks, gaskets and seals have distinct applications. Generally speaking, gaskets serve as a static seal between flat surfaces, such as joints, while seals are used in more dynamic environments between active components such as rotating shafts, pumps, and engines.

    What Is a Gasket?

    Rubber gaskets from aero rubber in a variety of shapes

    A gasket is a ring or sheet composed of a supple material used in static applications to seal joints, flanges, and other mating surfaces to prevent leakage.

    Depending on the material and application, gaskets can be produced using a broad range of manufacturing techniques, including:

    Both gaskets and seals can be found in nearly every application and industry, including oil and gas, manufacturing and industrial applications, pulp and paper production, and agricultural equipment.

    Worn or broken gaskets are easy to replace. It is typically recommended to change gaskets any time the equipment is disassembled and reassembled.

    What Is a Seal?

    Rubber seals from aero rubber

    Seals are a broader category that includes o-rings, valve stem seals, rotary seals, and mechanical seals. Unlike gaskets, which are typically used for static applications, seals are found in more active environments in motors, engines, pumps, and rotary shafts. Seals tend to be flat and round, with a tilted inner ring of rubber surrounded by a metal outer ring. The tilted angle of the seal’s inner layer helps to prevent leakage in dynamic applications. Seals are typically used to prevent leaks between two moving parts, and to prevent the intrusion of particles and contaminants into the system.

    The process for replacing a broken or damaged seal can be very involved. Not only the seal, but the entire assembly may need to be dis-assembled to get access to the seal and allow for replacement.

    Gasket and Seal Materials

    Seals and gaskets can be made of a broad range of materials, depending on the applications for which they will be used. Common materials used to make both gaskets and seals include:

    • Buna ‘N’ (Nitrile)
    • CSR (Hypalon®)
    • EPDM
    • Flourosilicone
    • Fluoroelastomer (FKM)
    • Natural Rubber (polyisoprene)
    • Neoprene
    • Polyurethane
    • Silicone
    • Synthetic Polyisoprene
    • Thermoplastic Rubber (TPR)
    • Viton®

    All of Aero Rubber’s materials can be formulated and customized to meet the needs of your specific application.

    Guide to choosing elastomers - Rubber material selection guide by Aero Rubber

    Explore Aero Rubber’s Guide To Selecting Elastomers

    Quality Sealing Solutions From Aero Rubber

    At Aero Rubber, we pride ourselves on providing the highest quality rubber gaskets and seals in the industry. We manufacture your gaskets and seals to meet even the most detailed specifications. Whether you need a simple gasket or a complex sealing solution, our knowledgeable and experienced engineers and specialists will help you find the best sealing material and design for your needs.

    Contact Us Today!
    Learn how our sealing products can enhance your next project.

     

LinkedIn FacebookYouTube