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The white size is only 3CM
The following two sizes in black are 3.5CM, 4.3CM
Rubber O-ring: ◆Features: good sealing effect, easy to install, and affordable;
◆Material: Rubber(NBR);
◆Temperature resistance: ≥-30°, ≤100°;
Silicone O-ring: ◆Features: soft material, good sealing effect, easy to install;
◆Material: Silicone(Industrial supplies);
◆Performance: high temperature resistance, oil resistance; can effectively prevent oil and air leakage, and play a very good sealing effect.
Fluorine rubber O-ring: ◆Features: hard material, high strength, not easy to damage, not easy to age;
◆Usage: Used to fix SIGMA code table holders, sensors, and lamp products