Does any know if there is any guide for valve packing selection based on service and temperature?

The guides I know of are all based on either elastomer suppliers of products (sealings in general, O-rings) wich will be able to guide you regarding temperature, chemical resistence and pressure for known mechanical products (eg. o-rings etc)

or:

from larger suppliers of a wide range of for instance BFL centric valves. Bray, Tyco Controls and many others.

I think this would be the way to go.

As a curiosium: the German solenoid valve company Herion, now owned by Norgren, published in 1985 (In German only!) a very good handbook on different, common chemicals, chemical properties and crossrelated to different materials for body and sealings, again crossrelated to a limitid range of common temperatures and pressures, all materiales ranged as plus or minus.

Although limitid, and issued primarily for solenoid valves, this is still in my posession in a reachable shelf from my office chair.

I also would be grateful if somebody could point to something like this available today.

Remember that an O-ring failure at low temperature caused the Challenger shuttle explosion in 1986.  Elastomer applications such as valve(Mud Valves) packing selection are more complex than most people recognize.  One material may be suitable for a rotary valve and not for a sliding stem valve.  Many grades of Viton exist.  Few (if any) are compatible with amines.  Few of the Teflon products are suitable for valve packing much above 400 degree F but may still be well suited for a seal component.  Some materials absorb CO2 and decompress explosively when depressured.  Some materials may work well in certain shapes and not other shapes.  Some applications may require products with thermosetting properties instead of elastomers.  Sometimes ceramics or glass may be best although not likely for valve packing.  Some seal materials hold up to rough surfaces