What are the typical tolerances for a silicone part?

Question: What are the typical tolerances for a silicone part?

Answer: Part tolerances will vary from one part to the next, and is typically dependent upon the intended function of the part.  While every part can be “perfect” as designed, in the real world this just isn’t the case, everything has a tolerance, it’s just a question of how tight that tolerance will be.  To save molders and designers some headaches and bickering, the RMA (Rubber Manufacturers Association) was kind enough to put together a series of standardized tables of tolerances for molded rubber parts.  The tables are categorized into different groups such as “Commercial”, “Precision”, and “High Precision” and are readily available for free on the internet.  They’ve also created tables that reference tolerances on other aspects of the part such as miter (alignment) and flash.  To learn more about RMA standard tolerances follow this link:  http://www.rubberassociates.com/pdf/RMA%20tolerance%20table.pdf

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About Kevin

Kevin received a Bachelor of Science Degree in Biomedical Engineering from the University of Connecticut in Storrs, CT. He has been with at Albright Technologies, Inc. for over two years where he does development work on silicone medical devices. He lives in Connecticut, with his wife (Megan) and their two dogs (Abby and Ripley).