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O-ring Inspection and Replacement
Examine O-rings for wear, dryness, discoloration, stretching, cracks, nicks, and brittleness. Replace O-rings when any of
these conditions are present. Replacing O-rings on an annual basis, regardless of their condition, is the best way to protect
against moisture damage.
Perform the following steps to replace an O-ring.
1. Remove and discard the damaged O-ring.
2. Use a clean, dry, soft cloth to clean the O-ring groove to remove dirt or residue.
3. Lubricate the new O-ring using high-vacuum grease.
a. Wash your hands thoroughly.
b. Apply a small amount of grease to the pad of your index finger, and rub your index finger and thumb
together to spread the grease evenly.
c. Inspect the new O-ring and remove any debris stuck to it.
d. Rub your fingers around the O-ring until there is a thin layer of grease on the entire O-ring.
4. Install the O-ring in the groove and remove any excess lubricant with a clean cloth.
Do not allow water or lubricant to enter the connector.