b'FR Flanges Nitrogen Gas (N2) Springs Protection DevicesFR 16 FRC 16.1 FR 248 8 824 24 38M16x1.5 M16x2 M24x1.5FR 28 FR 38 FR 45108 840 50 60M28x1.5 M38x1.5M45x1.5FR 5012 Excellent protection against both liquid and solid pollution Facilitates having gas springs working in any position Cost savings65M50x1.5102 103'