GREASE OR WASHING SEAL FOR BALL JOINT
In food and pharmaceutical packaging lines product’s contamination represents one of the most common problems
Especially in case of joint’s continuous accelerations (which sometimes are up to 5 G) grease can escape, creating problems to packaging.
An important customer, world leader in the packaging industry, asked us to solve this this problem on its bouillon cubes’ packages machinery , using a EU 1935/2004 and FDA certificated material. The initial request was to design a grease seal that would work on a spherical surface.
After a careful analysis of the machinery our technical department determined that the working angle of the seal varied from +/- 2.5 ° and that this was subjected to an acceleration of 5G.
The seal was also subjected to washing with hot water at temperatures between 80 ° and 85 ° C.
In view of this data our designers proposed to create a SINTEK H-TPU seal with 2 independent lips, one for the grease and one for the external environment.
Once assembled the lips have a controlled compression on the ball which guarantees both grease and the dust /wash seal.
SINTEK H-TPU guarantees resistance to wear and it is a certificated material, as it was requested by the customer.
“After installation, we no longer had any leaks or contamination problems; we are fully satisfied”