can the weatherseal go between the bottom of the air conditioner and the window sill?)

If there is space then yes. It’s a foam so you can manipulate it into the smallest crevices.

does it absorb moisture?

Never had to experience moisture

What is the maximum temperature rating of this foam?

Sorry, no idea. I use it for insulation. It does not come with temperature ratings listed, but as it's very light, thick sponge rubber I wouldn't think it would withstand very high heat.

It can be hand-washed in mild soapy water' rinsed and air-dried as long as the foam has not gotten crumbly with age.

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🛠️ Seal the deal on comfort and style with ThermwellFrost King!

ENERGY SMART - Blocks drafts to optimize AC efficiency and reduce energy bills
SEAL LIKE A PRO - Compressible foam ensures airtight, insect-proof window AC installation
DURABLE WEATHER DEFENSE - Resilient foam withstands daily wear, keeping your space pristine
PERFECT FIT EVERY TIME - Generous 42-inch length covers standard window AC gaps effortlessly
EASY INSTALL INSTANT UPGRADE - Simple application transforms your window setup with no fuss

ThermwellFrost King AC43H Weatherseal Tape is a 42-inch long, 2.25-inch thick open cell foam strip designed for window air conditioner weather-stripping. It effectively seals out air, dust, and insects, enhancing energy efficiency and comfort while providing a durable, easy-to-install solution.

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