Sigma Scientific Glass Pvt. Ltd manufactures Inserts. Sigma Scientific Glass Pvt. Ltd is an ISO 9001:2000 certified company. Inserts are fitted to avoid direct contact between backing flange and glass buttress end. They also compensate for any unevenness from manufacturing tolerances. Inserts should ideally be replaced when the joint is reassembled. They are used in chemical, pharmaceutical, dyes and allied industries.
