How do I specify a hydraulic rod or piston seal for quotation?

Identify whether the part seals a rod or piston and provide its groove drawing, fluid, pressure cycle and sliding speed. Review extrusion gaps, mating surfaces and installation constraints with the supplier.

Information to compare

• Rod or piston function
• groove dimensions
• pressure cycle
• sliding speed
• fluid
• temperature
• extrusion gap

Define the groove and hydraulic operating conditions

Identify whether the seal is for a rod, piston or wiper position. Supply the groove drawing and tolerances, rod or bore diameter, mating surface specification and available installation space.

State the hydraulic fluid, pressure cycle, peak pressure, temperature, stroke and speed. Ask the supplier to review the clearance and any proposed backup ring together with the seal profile.

Request a drawing of the offered profile and a list of deviations. Agree leakage and functional test criteria for the assembly, including the conditions under which the sample will be evaluated.

Certification, parameters and delivery

Ask for current certificates relevant to the manufacturing site and your purchasing requirements. Verify the document number, scope and validity. Match inspection records to the part and lot specified in your order.

State the dimensions, compound requirements and operating conditions you need confirmed. Request separate sample and production schedules, including the approval trigger, dispatch date and destination. VKEFOT certification availability, MOQ and delivery dates must be confirmed in the quotation for your selected part.

Material selection guide · Reference comparison