Packless Vibration Absorber - Brass Breadcrumb Home / Products / Parts / Valves and Valve Accessories / Packless Vibration Absorbers Loading... Customer Part Number: PAC-VAF-3 Brand: Packless Industries Burst Pressure (PSI): 3100 Inside Diameter (In.): 1/4 Outside Diameter (In.): 3/8 Working Pressure (PSI): 620