Description
This spring is a key part inside Leybold Trivac vacuum pumps. It is built to store mechanical energy and release it at the right moment. This helps the pump work efficiently and stay consistent during use.
It fits perfectly in the Leybold Trivac D40BCS and D65BCS models. You will often find it in the pump’s mechanism or repair kits, like the oil filter service kit. The spring makes sure moving parts get the right amount of force so the pump does not lose performance.
Many workshops and labs keep this part on hand for quick repairs. It helps your vacuum system run quietly and effectively for a long time.

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