Maybe a good soaking in oil to soften it up will be good enough.
Don't use oil on a rubber piece, that will accelerate deterioration. There are products available specifically for rubber.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
