Ensure the sealing surfaces are clean, dry, and free of grease.

Ensure the sealing surfaces are clean, dry, and free of grease.

Position the gasket so that it is centered on the flange.

Position the gasket so that it is centered on the flange (use the bolts as a guide).

Lubricate the fasteners well. Be sure to lubricate all load bearing surfaces on the bolts, nuts, and washers.

Lubricate the fasteners well. Be sure to lubricate all load bearing surfaces on the bolts, nuts, and washers.

Assemble bolts, washers and nuts on the flange.

Assemble bolts, washers and nuts on the flange.

Finger-tighten the bolts, moving in a circular direction.

Finger-tighten the bolts, moving in a circular direction.

Utilize a calibrated torque device to torque each bolt in a star pattern sequence.

Utilize a calibrated torque device to torque each bolt in a star pattern sequence. Apply the torque in three passes:

  • 1st Pass: 30% of Target Torque
  • 2nd Pass: 60% of Target Torque
  • 3rd Pass: 100% of Target Torque
Apply the torque at 100% of Target Torque in a circular pass.

Apply the torque at 100% of Target Torque in a circular pass. Then wait 4 hours.

Complete the installation by performing circular passes until all bolts have acheived the target torque.

Complete the installation by performing circular passes until all bolts have acheived the target torque.

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