Dairymaster Rubber Inline Filter Sock Retainer 3″ The Dairymaster Rubber Inline Filter Sock Retainer 3″ is a replacement sealing component designed for use within Dairymaster inline milk filter systems . This rubber retainer is used to hold the filter sock securely in place, ensuring correct positioning and an effective seal during milking and wash cycles. Inline filter sock retainers play a vital role in maintaining filtration efficiency. When a retainer becomes worn, split, or distorted, the filter sock may move or fail to seal correctly, leading to milk bypass, reduced filtration, or air ingress. Replacing the retainer helps restore proper filter performance and supports consistent milk quality. The Dairymaster Rubber Inline Filter Sock Retainer 3″ is manufactured to suit compatible Dairymaster inline filter housings and is specifically designed for 3-inch filter assemblies . The flexible rubber construction allows it to create a reliable seal while accommodating normal pressure changes and system movement during operation. This component is ideal for routine servicing, preventative maintenance, or targeted replacement when carrying out filter changes. Regular inspection and rep