What is sealing in manufacturing?

This is also the situation in a compression mould as used in the rubber industry. If, like with the toaster, we make only 1 product each cycle, we speak of a (pilot) mould with 1 cavity. Such a mould is well suited for the production of small numbers of products or for use in a R&D project in order to make simple and lower-cost modifications to a product, which, once approved, can be transferred 1:1 to a series mould with multiple cavities.

Series moulds are necessary if larger numbers must be produced in series under economically most favorable production conditions. In series moulds, we have compression, transfer and injection moulds.

The vulcanization process can be realised entirely in the mould, but for economic reasons, it is usually carried out in two stages.

• In the mould, till the product is completely dimensionally stable.
• In the process of “post curing” in the oven until complete vulcanization is reached.

In this way, the cycle time of an article is severely reduced, which results into lower costs.

Other production methods that we apply are: 

• Extrusion technique: Production of profiles, O-ring cords and hoses delivered per length on reels with an extruder and an extruding die as production machine/tool. If the connection in the material also has to be elastic and of the same material, this “vulcanized joint” is realized using a welding mould.
• Die-cutting technique: Production of flat rings / gaskets from solid rubber as well as cellular and sponge rubber using a die-cutting press and a die as production machine/tool. Small series can often be produced using the “water cutting” production method. This does not require investment in a die but does results into slightly higher production costs.
• Prototyping TPE’ s: Production of samples in TPE materials by using a 3D printer to determine the functionality of the geometry of an intended seal in the construction without investing in a pilot mould.

Device to prevent fluid leaks in mechanisms

A mechanical seal is a device that helps join systems and mechanisms together by preventing leakage (e.g. in a pumping system), containing pressure, or excluding contamination. The effectiveness of a seal is dependent on adhesion in the case of sealants and compression in the case of gaskets. The seals are installed in pumps in a wide range of industries including chemicals, water supply, paper production, food processing and many other applications.[1]

A stationary seal may also be referred to as a 'packing'.

Seal types:

See also

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References

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