What is the best rubber conditioner for rubber seals on doors as well as for rubber pipes to prevent deteriorating?

Which is the best rubber conditioner which can be used both for rubber seals on doors as well as for rubber pipes to prevent it for deteriorating?
We'd recommend 303 Rubber Seal Protectant and Conditioner (which comes with a useful applicator for applying onto door seals (amzn.to/2DYJH1g) or Autoglym Vinyl & Rubber Care (amzn.to/2DYKcIG).
Answered by Georgia Petrie on

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