Here's the review I referred to earlier:
http://www.parksoffroad.com/prodreview/inflatortest/inflatormain.htm

I kept the one in the pic under the hood of Betsy IV for the whole time I had her (going on three years). Extreme temps, lots of dirt/dust/mud/snow. It still works fine. YMMV, but I think it'd be okay.

1991 HZJ77, 1999 KZJ90, 1999 UZJ100, 1992 M101CDN2
https://www.thegearheadproject.com/category/jdm-journeys/