Metaspec manufactures test specimens required by military specification MIL-PRF-87257, which covers a synthetic hydrocarbon base hydraulic fluid used in the -54C to +200C temperature range in aircraft automatic pilots, shock absorbers, brakes, flap-control mechanisms, missile hydraulic servo-controlled systems, and other hydraulic systems using synthetic sealing material. This hydraulic fluid is identified by NATO Code No. H-538.
The following is a list of tests in Specification MIL-PRF-87257 that require test specimens. Some of these tests may be customized for this specification. Click on the test method number for more information about specimens required for each test.
To read or download this specification, click below.
This specification supersedes MIL-H-87257.