E-5
Precautions on Handling the O-ring
Silicone grease protects the O-ring from chafing.
After checking the O-ring to make sure that there
are no scratches, dust, or debris, apply a light
coating of silicone grease to the entire O-ring with
your finger. Applying too much grease will make
it easier for dust and debris to adhere to the O-
ring, and could cause flooding.
When fitting the O-ring into the O-ring groove,
insert it straight into the groove; do not bend or
twist it.
Coat with silicone grease
Do not twist the O-ring
Remove the O-ring for inspection before each use
Be careful about how you store O-rings
O-rings last for one year
Although it depends on how well they are maintained, how often they are used,
and how they are stored, O-rings generally last for one year. It is advisable to
inspect them before use, and replace them early.
When storing spare O-rings or O-rings that you have removed from the housing,
keep them in a cool place out of direct sunlight. Also, when storing O-rings, do
not place heavy objects on them or twist them.
In principle, the O-ring should be removed before each use so that the O-ring,
O-ring groove, and O-ring contact surfaces can be checked. This is because
you cannot find any sand or debris that may have gotten into the O-ring groove
if the O-ring is not removed. For routine maintenance prior to each use, it is
advisable to make sure to remove the O-ring.
