The advantage is
* Higher purity raw rubber material: no recycle materials ,our raw materials make sure the o-rings have better elasticity and more softer performance.
* More convenience for installing:everysize has their position that help worker save much time and save you labor cost.
*With sponge protect.The sponge can help o-rings resist oxidation ,it can keep longer time.
*Accurate size ;if the size is not correct or non -complete,you can return your goods to company and we pay it.
*Tt's is a new special design that can help you get more profit.