Ram liner

A liner for a ram configured to press a viscous material, the ram including a ram plate including a ram surface and having a plurality of apertures extending through the ram plate and a circumferential surface, the liner comprising:

• a liner wall configured to abut the ram plate, the liner wall having a plurality of knock-out tabs configured to be removed to form a plurality of apertures configured to align with the plurality of apertures of the ram plate,
• the knock-out tabs including a first set of knock-out tabs having a first size, a second set of knock-out tabs having a second size, and a central knock-out tab having a third size, so that the plurality of apertures have different sizes depending on whether the first set of knock-out tabs, the second set of knock-out tabs, or the central knock-out tab is removed,
• the first set of knock-out tabs including four knock-out tabs equally spaced around a center of the liner, the second set of knock-out tabs being equally spaced around the center of the liner between the first set of knock-out tabs;
• and
• a circumferential lip extending vertically from the liner wall,
• the liner wall being configured to prevent the viscous material from contacting the ram surface,
• the circumferential lip being configured to prevent material from contacting the circumferential surface.