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The QA1 valve disc kit contains eight .542 in OD, 0.004 in thick valve discs, sold as an 8-pack for service or rebuild applications. These precision-sized discs are supplied as matched replacements to refresh valve stacks or piston assemblies where small, consistent disc thickness matters. Keeping multiple identical discs on hand helps ensure repeatable hydraulic characteristics during maintenance.
QA1 Valve Disc Kit - .542in OD x .004in Thick - 8 Pack
