The aviation kerosene lubricity test ring is made of SAE8720 steel, an alloy structural steel conforming to GB/T3077, with a Rockwell hardness (HRC) value of 58–62 on the C scale; its surface finish ranges from 0.56 to 0.71 μm (22–28 μin).

This test ring is manufactured by Beijing Gaoke, and the product meets the requirements of SH/T 0687 and ASTM D5001 standards.

The test ring is compatible with instruments conforming to the SH/T0687 and ASTM D5001 test method standards.

Packaging specification: 10 test rings per box, one ring can be used for 10 tests;

50 test balls per box, ample stock available.