BM40F Liner Unvented (Pack of 4) The BM40F Liner Unvented (Pack of 4) is a precision-manufactured milking liner designed to deliver consistent performance in compatible milking systems. Built to exact specifications, these liners support stable vacuum conditions, smooth pulsation, and efficient milk flow during the milking process. Featuring an unvented design , the BM40F Liner Unvented (Pack of 4) operates without an air vent, making it suitable for milking systems where controlled air admission is not required. This configuration helps maintain steady vacuum levels within the cluster, supporting consistent liner movement and reliable milk extraction. The BM40F Liner Unvented (Pack of 4) has an orifice diameter of 23.0mm and a total length of 301mm , ensuring a secure fit within compatible cluster shells. Accurate liner dimensions are essential for maintaining proper liner action, supporting effective teat massage and promoting comfortable milking conditions for the animal. Manufactured from durable materials designed for demanding dairy environments, the BM40F Liner Unvented (Pack of 4) is built to withstand daily milking routines and repeated wash cycles. The resilient construct
