NBR,EPDM,FKM and SIL are all commonly used rubber materials,

Ningbo Yokey Precision Technology Co., LTD is a modernized enterprise

The most common kinds of silicone rubber products, can be divided into ordinary

Rubber O-ring sealing characteristics are very good, high service life

EPDM O-ring is generally used in the temperature scale of -50℃~150 ℃

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