Abbey Gunlube SM50 is ideal for the lubrication of torch / headlamp threads and O-rings. The product is supplied in a 30ml dropper bottle, enough for years of use.
O-rings and threads can dry out over time making it difficult to remove/replace and fully seat torch / headlamp battery caps. If the cap isn't fully seated and making an electrical contact your light will appear to be faulty.
The Abbey oxidised castor oil / Molybdenum formula is ideal to keep your screw on battery compartment end caps free moving and easy to use.
Shake the bottle thoroughly to mix the lubricant then apply a single drop to the O-ring and spread it around the entire ring. Apply a second drop to the torch threads and spread this around also, keeping the lubricant clear of any electrical contact points (bare end of body tube / contact springs etc)
Wipe off any excess and replace the torch end cap, enjoying the new smooth action.