The internal fittings used in the manifold block style machines use o-ring bubble fittings instead of flare fittings and require o-ring replacements to seal properly. (10 Pack)
Robinair does not warrant any "RA" repair item not installed by an Authorized Service Center.

Warning: This product may expose you to chemicals including lead which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov