Capabilities / 07
Precision lapping.
Lapping takes flatness and finish past what grinding can reach, producing surfaces that seal on contact without a gasket to help them.
Los Angeles, CA · Serving customers nationwide
Request this process* Representative capability. We confirm specs against your print before quoting.
01 / The Process
Lapping works the part against a precision lap with a fine abrasive between them, removing material a few millionths at a time. We lap outside diameters, inside diameters, and flat faces, holding straightness and roundness to 20 millionths of an inch with flatness and finish beyond grinding tolerances.
It is usually the final step inside a larger job rather than a standalone process: the last operation on a sealing face, a valve-to-seat pair, or a hydraulic component where two surfaces must make full, even contact.
02 / Why It Matters
Some joints seal on finish alone, with no gasket to help.
Metal-to-metal seals, precision mating faces, and lapped valve pairs depend on complete surface contact. At that level a few light bands of error is the difference between a joint that holds pressure and one that weeps, and lapping is the process that gets there.
03 / Materials
04 / Typical Parts
- Valve and seat sealing pairs
- Hydraulic mating faces
- Precision spacers and shims
- Seal plates and manifold faces
- Gauge and reference surfaces
- Structural mating joints
05 / Industries
Verified before it ships
Lapped surfaces are checked under an optical flat, with flatness read in light bands and finish verified against the drawing requirement.
05 / Contact
Let's talk about your part.
Have a print, a model, or a part that has been hard to source? Send the details and you will get a quote and a straight answer, usually within one business day.