Baader Ultra-Range Machine-Grease #4 (-50°C–+60°C)
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- suitable for temperatures from -50°C up to +60°C
- wide stretched synthetic grease with constant viscosity across an extremely large temperature-range
- Especially suitable for use in the mirror sliding fittings of SC-telescopes (i.e. Celestron), as the grease does not produce any out-gasing, does not react to vapour-pressure, does not harden over time - and does not decompose into a solid and a liquid part over time.