Lubricant: Vaseline -X12Example) AS2002F-04A-X12 Restrictor (Without check valve)Clean Series -X21410- Example) AS2002F-04A-X214 Example) 10-AS2002F-04A Grease-free (Seal: Fluorine-coated) + Restrictor (Without check valve)-X21 Example) AS2002F-04A-X21 ∗ Not particle-free Made to ...