The first one is Dark light measurement, simply said is to measure the O - ring shadow.

1.Interface leak Interface due to the gasket pressure is not enough,

There are many kinds of rubber products, such as rubber sealing ring, rubber gasket, oil seal,

Advantage: • Good heat resistance

1. O-rings should be kept away from direct sunlight, damp and

Coated rubber o-ring is a special rubber O-ring, which is made of rubber o-ring