For pre-refining a crude oil P, which P is fractionated into several fractions, typically hydrotreating, hydrocracking or hydroconverting some thereof, then re-composing said fractions and in general producing at least two pre-refined oils Pa, Pc, Pa being a high quality non-asphaltenic oil and Pc being a residual oil. The improved adhesion composition comprises a non-crosslinked resorcinol-formaldehyde andor resorcinol-furfural condensate, a rubber latex, and an aldehyde component such as 2-furfuraldehyde. The device comprises a fastening means arranged in the through-bore. The optical elements may guide the light onto corresponding portions of an image pixel array on the image sensor. The treatment plug also has at least one seal having a deformable metal member configured to radially deform into sealing engagement with the structure in response to longitudinal compression of the deformable metal member, and a seat that is sealingly receptive to a plug. Such extracts may include cakes with low residual oil and high levels of desirable constituents and oils that require little to no downstream processing upon extraction from the biomass.