Piston Ring: Specifications

DIMENSIONS
Ring End Gap:
Top:
Standard 0.040 - 0.080 mm (0.0016 - 0.0031 inch)
Limit 0.1 mm (0.004 inch)
Second:
Standard 0.030 - 0.070 mm (0.0012 - 0.0028 inch)
Limit 0.1 mm (0.004 inch)
Oil Rail:
Standard 0.065 - 0.135 mm (0.0026 - 0.0053 inch)
Limit 0.1 mm (0.004 inch)
Ring Side Clearance:
Top:
Standard 0.28 - 0.52 mm (0.0110 - 0.0205 inch)
Limit 0.5 mm (0.020 inch)
Second:
Standard [1] 0.45 - 0.69 mm (0.0177 - 0.0272 inch)
Standard [2] 0.55 - 0.70 mm (0.0217- 0.0276 inch)
Limit 0.5 mm (0.020 inch)
Oil Rail:
Standard 0.20 - 0.69 mm (0.0079 - 0.0272 inch)
Limit 0.5 mm (0.020 inch)


[1] For rings punched with R or T.
[2] For rings punched with N.