Ultraliner GM74U (Pack of 4) The Ultraliner GM74U is a high-quality milking liner designed to deliver dependable performance in milking systems using Gascoigne type liners. Manufactured to precise specifications, these liners help maintain stable vacuum levels, smooth pulsation, and efficient milk flow throughout the milking process. The Ultraliner GM74U features an orifice diameter of 20.0mm and a total length of 315.5mm , ensuring a secure and accurate fit within compatible cluster shells. Correct liner sizing is essential for maintaining proper liner movement and effective teat massage, helping promote efficient milk extraction while supporting cow comfort during milking. Designed as an unvented liner , the Ultraliner GM74U operates without an air vent, making it suitable for milking systems where controlled air admission is not required. Maintaining balanced vacuum conditions within the cluster helps ensure smooth liner operation and consistent milking performance throughout each milking cycle. Manufactured from durable materials that conform to BfR and RAL guidelines , these liners meet recognised standards for materials used in food-contact dairy environments. Their robust co
