Canon 12x36 IS III objective lens caps (1 Viewer)

I bought a Canon 12x36 IS III binocular. I produced objective lens caps of NBR (acrylonitrile butadiene rubber) for it. The newly produced lens caps have a normal NBR smell meaning that chemicals are coming out of the rubber.
In the booklet coming with the binocular it is stated:
„Avoid storing binoculars in a laboratory or a location where chemicals are present since this may cause rust or corrosion. Also avoid storage in a chest or drawers.”
Is there any danger that fixing the new NBR lens caps on the binocular any damage of the lenses, rubber coating or other parts of the binocular may be produced?

Cristian

This would be better put in the "Canon" category of the Binoculars section.

If it's any help I recently lost one of the objective lens caps of my Swarowski EL 42s. I popped into In Focus at Slimbridge and they tried three different sizes of 42mm Opticron lens caps, they found at set that fit perfectly and cost much less than the originals. Might be worth dropping them an E Mail?

I moved this thread to the Canon binocular forum..............

Thank you johnf3f for the suggestion.
Thank you HokkaidoStu for moving this thread.

I think the question would be:
Does anybody know if an objective lens cap has caused any damages to the binocular (lens, rubber coating, metal parts)?

Cristian

Never (yet) had a lens cap react with my gear. All mine seem to do is fall off and get lost!

Thank you for the answer johnf3f. It seems I can use them.