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Custom seal specification

Custom hydraulic seals start with better data.

A made-to-size seal request is much easier to quote when the supplier receives the machine dimensions, seal profile and operating conditions—not just a photo of a worn seal. This page helps organize that information into a supplier-ready specification.

Use this as a technical specification checklist.HydraResolve provides preparation and troubleshooting guidance; manufacturing, payment and shipping are handled by the supplier you choose.
1

Identify the sealing position

Record whether the part is a rod seal, piston seal, wiper/scraper, static seal or guide element. A similar-looking profile can perform a very different job depending on where it sits.

2

Measure the machine, not only the old seal

Save ID, OD and height from the removed part, but verify rod diameter or cylinder bore plus the actual groove/gland width whenever possible. Used elastomers can distort after service and removal.

3

Capture the operating conditions

Fluid type, pressure, temperature, sliding speed, contamination, motion type and surface condition all influence profile and compound selection.

4

Keep evidence of the original profile

Photograph the cross-section and lip orientation before the part is discarded. Note backup rings, energizers, guide rings and any unusual wear pattern.

Quote-ready checklist

What to save for a supplier request

DimensionsID, OD, height, rod/bore diameter, groove/gland width and other profile-specific groove dimensions.
ApplicationRod, piston, wiper or static location; single- or double-acting cylinder when relevant.
Material cluesKnown PU/NBR/FKM/PTFE family, color/feel only as a clue, and the actual hydraulic fluid.
Operating limitsWorking pressure, temperature, speed, contamination and any pressure spikes or unusual duty.
Condition evidencePhotos of the old profile, rod/bore damage, extrusion, one-sided wear or contamination.
Quantity & timingHow many pieces are needed and whether the job is an emergency repair or planned stock.

Prepare the data now

Use the identifier to organize the seal dimensions and location, then screen the material family against the operating conditions. Keep those results with the repair record and send them to the seal supplier or machining/fabrication shop you choose.

Open Seal IdentifierScreen materials
Scope of this page

HydraResolve does not manufacture or sell seals through this website. The purpose of this page is to help you prepare complete technical information before contacting a qualified supplier.

Need help checking the specification?

Email the measurements, application and operating conditions you collected. The reply can help identify missing information, but the supplier must make the final design, material and manufacturing decision.

Email a specification question

Custom hydraulic seals and custom machined seals

Start with gland dimensions, seal function, exact fluid, pressure and temperature. The supplier must review the profile, compound and clearance before accepting a design. Machining a different seal size does not automatically repair damaged hardware. This page prepares sourcing data and is not an order form.

Hydraulic Seal Sourcing: OEM Kit, Stock Seal or Custom Machined Seal?