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Figure 2. The rigid portion, 11, prevents deformation. about 45". A narrow passage, 19. allows air to pass, but grease is scooped up by the rake face.
The strength of the core metal, 11, within the extension, 16, prevents deformation under centrifugal forces at high speeds, and the leakage of grease is prevented almost completely.
๐ SIMILAR VOLUMES
A blow moulding apparatus, comprising: a number of mould shells that has a seal around the periphery in the gap between the mould shells to prevent ingress of air to mould.
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