[NBR Rubber 90° Hardness (3 pieces)]

[Low sliding fluorine rubber (1 piece)]

[NBR Rubber 70° Hardness (5 pieces)]

This is an O-ring for electric guns.

The 0.1 inch (2.62 mm) wire diameter is the same size as the Tokyo Marui genuine products, and is compatible with heads without intake holes. Built in contact with common inner cylinders for initial speed stability.

Can also be used with perforated heads.

70 hardness is normal and contains 5 pieces. Use for repairs.

90 hardness is for softening and abrasion resistance at high temperatures. This is a pack of 3.

Fluorine rubber materials are designed to prevent sticking during grease less assembly.

Please use a hardness of 70°. 90% hardness, fluorine rubber for advanced users.