Is this rubber spongy like a mouse pad?

Nope, dense and not very much give at all. Comes slightly curved and will stay that way unless you have a hydraulic press or heat it up.

Could i use this to fabricate a cover for my sump pump? I want something flexible to cut around the outlet pipe, but not sag.

Yes, the SBR Rubber Sheet would work for this application. You would simply need a utility knife to cut it to fit your needs.

What temperature does this melt at? Will a 130w hot knife trim this?

The temperature for this SBR Rubber Sheet would be -10F to 190F at ambient room temperature; however, if it comes in contact with a hot knife at 130q, there is a high possibility that it would be an uneven cut, and melt the edges of the cut. There is also possibility that it would catch on fire. We would strongly recommend using a sharp utility knife like a box cutter and a metal straight edge ruler, and to keep scoring it with a little effort and patience. This should be able to cut the product to your design size and shape.

Can it be cut and used as a sole for shoe, to adjust height, for a person with deformed leg and bad posture ?

Hello, While the SBR sheets can help with the height discrepancy, it is not ideal to use this product for orthopedic purposes. Unfortunately, these would not be very comfortable. Sincerely, Robert Morris Rubber-Cal, Inc.

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Small Parts SBR (Styrene Butadiene Rubber) Sheet, 70 Shore A, Black, Smooth Finish, No Backing, 1/2" Thickness, 12" Width, 12" Length

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SBR (Styrene Butadiene Rubber) Sheet, 70 Shore A, Black, Smooth Finish, No Backing, 1/2" Thickness, 12" Width, 12" Length

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