Which statement about bonded clamps and tubing is true?

Which statement about bonded clamps and tubing is true?

• A. remove paint or anodizing from tube at clamp location
• B. Do not alter the tube surface where clamps are installed
• C. Use clamps that are coated in rubber
• D. Clamp on any portion regardless of location

Answer: (A)

Bonded clamps rely on an adhesive bond to the tubing, and for that bond to form properly the contact surface must be clean metal. Paint or anodizing acts as a barrier to adhesion, so removing it at the clamp location lets the bonding material—along with the clamp—directly contact bare metal, creating a strong, durable bond and reducing corrosion risk under the clamp. If you leave paint or anodizing in place, the bond is weakened and the clamp can fail under vibration or pressure. The other options would either prevent proper bonding or misplace the clamp, which isn’t acceptable for a secure, reliable installation.

Bonded clamps rely on an adhesive bond to the tubing, and for that bond to form properly the contact surface must be clean metal. Paint or anodizing acts as a barrier to adhesion, so removing it at the clamp location lets the bonding material—along with the clamp—directly contact bare metal, creating a strong, durable bond and reducing corrosion risk under the clamp. If you leave paint or anodizing in place, the bond is weakened and the clamp can fail under vibration or pressure. The other options would either prevent proper bonding or misplace the clamp, which isn’t acceptable for a secure, reliable installation.