Metric Kit N70

70 durometer nitrile is a good multi use compound.  It does well in most types of environments, and is espically suited for petroleum oil based applications.

This 36 compartment kit contains a total of 500 O-rings in 36 metric sizes

Material: 70 durometer nitrile 

Meets SAE J200, ASTM D2000

Sizes and quantities include: 

20 each of the following (1.5mm cross-section) sizes:  5.0 
20 each of the following (1.6mm cross-section) sizes:  2.2, 3.1, 4.1, 7.1
20 each of the following (2.0 mm cross-section) sizes: 4.0, 6.0
15 each of the following (1.5mm cross-section) sizes: 13.0
15 each of the following (1.6mm cross-section) sizes: 9.1, 10.1, 13.1
15 each of the following (2.0mm cross-section) sizes: 8.0, 9.0, 10.0, 12.0
15 each of the following (2.4mm cross-section ) sizes: 4.3, 5.3, 5.6, 7.6, 8.3, 8.6
10 each of the following (1.5mm cross-section) sizes: 16
10 each of the following (2.0mm cross-section) sizes: 14, 16, 19, 20
10 each of the following (2.5mm )cross-section sizes: 10, 13, 14, 15, 17, 18, 19
10 each of the following (3.0mm cross-section) sizes:  9.0, 10, 11