Kastas rod seals, piston seals, wipers, guide rings and static seals for the clamping unit and injection unit of plastic injection molding machines.
Plastic injection molding machines run for long, continuous hours, and their sealing components are exposed to high pressure and temperature. These conditions make seals wear out sooner than usual and need replacing.
Kastas has worked on sealing this type of machine for years, and that experience is built into the design of every code.
Plastic injection molding machine: injection unit and clamping unit.
The packings below apply to these main machine cylinders:
These machines work with a combination of several different hydraulic cylinders, and each cylinder needs several types of seal at once.
For each cylinder, Kastas designs the sealing code that suits that specific application:
K84The K84 is a double-acting seal for static applications, designed specifically for external sealing.
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K17The K17 is a two-piece, double-acting piston seal made of a sealing ring of a special PTFE compound and an O-ring as the energizing element.
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K49The K49 is a double-acting piston seal for heavy-duty applications, consisting of a sealing ring with a reinforced structure and a nitrile ring to absorb pressure. Its design is for harsh working conditions…
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K22The K22 is a single-acting rod seal designed with an inner lip shorter than the outer lip for optimal performance in rod applications.
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K35The K35 is a single-acting, two-piece rod seal made of a special PTFE profile ring and an O-ring to create the initial preload.
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K704The K704 is a single-acting, two-piece rod seal consisting of a special PTFE profile ring and an NBR O-ring as the energizing element.
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K73The K73 is a piston/rod guide ring designed for use in heavy-duty hydraulic and pneumatic systems.
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KBTThe KBT is a piston guide strip designed for use in hydraulic and pneumatic systems at medium pressure.
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K703The K703 is a two-piece, single-acting wiper consisting of a specialized PTFE profile ring and an O-ring as the energizing element. This wiper keeps foreign partic…
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K705The K705 is a three-piece, single-acting wiper consisting of a special PTFE profile ring and two O-rings that energize it. This product keeps foreign…
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K716The K716 is a three-piece, single-acting wiper made of a special PTFE profile ring and two O-rings as energizing components. The K716 keeps foreign particles out of…
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