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Need info for rubber seal: compression ratings, hardness, etc.

tooldeziner (Aerospace) (OP)
20 Mar 09 11:28
Hello,
I am working on a large shipping container (8'wide x 9' long) that requires a seal between the lid and base. The sealing surface area will see approx 1.7 psi. I am considering neoprene, but can't find any info on compression ratings. I need to determine what durometer of hardness will be required to compress a .25" thickness to approx 25% under a 1.7psi load.  I would appreciate any suggestions. Thanks.  
Compositepro (Chemical)
20 Mar 09 19:40
I work with vacuum bag sealants and have heard that one of the biggest markets for sealant tapes is cargo shipping containers. These sealant tapes are tacky and visco-elastic so they can accomodate a lot of joint movement and variable gaps and still keep a reliable, tight seal. They are only one-time-use, disposable materials, however. I'm not sure your approach would work as reliably.  
tooldeziner (Aerospace) (OP)
21 Mar 09 11:23
Thank you for your input, Compositepro. The application in this case requires a repeated usage in the field with no ongoing maintenance, so the disposable seal would no be an option. Again, thank you for taking the time to answer.
 
GrahamBennett (Materials)
23 Mar 09 5:24
Tooldeziner - container seals are commercial products that are available from several manufacturers in Malaysia.

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