Shop sapphire crystal and case back gaskets for your Seiko mod here! Crystaltimes is generally known for their Sapphire Crystals, but has ventured into the Gasket category due to high demand from customers. As you are swapping out for a new sapphire crystal or case back it’s important to also update the gaskets. A massive amount of customers requested to have a range of crystal gaskets and case back gaskets, so Crystaltimes has done their best to suit the need. This category is an ever growing product line that we will expanded upon continually. Browse the Gasket items below to find a suitable match for your watch model. Can’t find your specs? Write us an email and we will add it to our Gasket production line!