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  2. RTV silicone - Wikipedia

    en.wikipedia.org/wiki/RTV_silicone

    No release agent is required, obviating post-production cleanup. Silicones also exhibit good chemical resistance and high-temperature resistance (205 °C, 400 °F and higher). For this reason, silicone molds are suitable for casting low-melt metals and alloys (e.g. zinc, tin, pewter, and Wood's metal).

  3. Gasket - Wikipedia

    en.wikipedia.org/wiki/Gasket

    Gaskets are commonly produced by cutting from sheet materials. Given the potential cost and safety implications of faulty or leaking gaskets, it is critical that the correct gasket material is selected to fit the needs of the application. [2] Gaskets for specific applications, such as high pressure steam systems, may contain asbestos. However ...

  4. Pipe dope - Wikipedia

    en.wikipedia.org/wiki/Pipe_dope

    Petroleum-based pipe dope is not intended for use on threaded PVC, CPVC or ABS pipe and fittings since it will deteriorate the plastic. Builders in the US are expected to use thread compounds that meet ASTM F2331 - Standard Test Method for Determining Chemical Compatibility of Thread Sealants with Thermoplastic Threaded Pipe and Fittings Materials or thread seal tape on PVC, CPVC and ABS threads.

  5. Hermetic seal - Wikipedia

    en.wikipedia.org/wiki/Hermetic_seal

    A hermetic seal is any type of sealing that makes a given object airtight (preventing the passage of air, oxygen, or other gases).The term originally applied to airtight glass containers but, as technology advanced, it applied to a larger category of materials, including metals, rubber, and plastics.

  6. Dental sealant - Wikipedia

    en.wikipedia.org/wiki/Dental_sealant

    A 2-year clinical trial comparing GIC and Resin for dental sealants demonstrated that the GIC had a total loss rate of 31.78%, in contrast to the resin which had a total loss rate of 5.96% The study did acknowledge that GIC had its therapeutic advantages other than retention, this included the benefit of fluoride release and its use on ...

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