Sealife DC 600 - Manual (Page 87)

User’
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85
HOW TO INSTALL AND REMOVE O-RING
To Install O-ring:
Step 1: O-ring and O-ring groove must be completely clean before installing
O-ring.
Step 2: Push O-ring into groove as shown being careful not to twist or roll
O-ring.
Step 3: Use two fingers to push last part of O-ring into groove.
Step 4: Carefully close housing to firmly seat O-ring and open housing again
to inspect that O-ring is completely seated into groove. Do NOT grease the
O-ring.