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SEALS
Leupold scopes are sealed from within by several methods, including O-rings.
All seals are permanent and require no maintenance.
SCOPE EXTERIOR
Leupold scopes are made of rugged 6061-T6 aircraft aluminum alloy. No
maintenance of any kind is required; simply wipe off any dirt or fingerprints
that accumulate with a clean, dry cloth.
POWER SELECTOR RING (ON VARIABLE POWER SCOPES)
No lubrication is ever required on the power selector ring. DO NOT LOOSEN OR
REMOVE THE HEX-HEAD SCREW IN THE POWER SELECTOR RING.
ADJUSTABLE OBJECTIVE/SIDE PARALLAX DIAL
No lubrication is required.