APSOseal® Sealing Technology

Angst+Pfister – Innovative in Sealing Technology applications 

Our Sealing Technology Products

Angst+Pfister has been active in the field of sealing technology for over 100 years and has grown from a small local Swiss company into a leading international provider of sealing solutions. Our product range includes o-rings, shaft seals, hydraulic seals, pneumatic seals, flat gaskets, extruded profile seals and customized molded seals. As an engineering partner, we also support you along the entire value chain – from the evaluation of your application, the selection of the best material, prototyping, testing and series production to delivery. 

Browse through our assortment now!

We know sealings – and your needs

In addition to tightness, low coefficients of friction and a long service-life are often required to keep maintenance intervals as long as possible. In many industries, globally valid approvals are also required – whether for the food and beverage industry, the pharmaceutical industry and medical technology, the drinking water industry or in the oil and gas sector. In recent years, Angst+Pfister has invested heavily in the development of high-performance elastomers and currently has a wide range of materials available with many of the approvals required worldwide for the highest industry requirements. There, in the area of sealing technology, materials such as FFKM, FKM, EPDM, HNBR, VMQ but also PTFE play an important role. Other important industries we serve with customized solutions are the area of agriculture, the automotive industry and the general machine industry. 

Here you can find a material overview with a selection of high-performance materials!


We support you during development

Our application engineers are pleased to advise you on the materials best suited for your application, taking your individual requirements into account. We can also draw on our many years of specialist knowledge in the designing of seals and provide you with optimum support. In the design phase, you benefit not only from our comprehensive know-how in the field of compounding, but also from structured approaches such as Failure Mode and Effects Analysis (FMEA). We always take into account the possibility of cost-optimized production of the seals. 

In our download area below you can find further technical documentation on our various seals and materials and what has to be taken into account in the design and construction process.


Production in state-of-the-art production facilities

With own manufacturing plants in Turkey and Italy, Angst+Pfister covers the entire value-added chain in sealing technology, from compounding to processing and logistics. Our technical expertise in material development, as well as the efficient production of seals ultimately helps you to save time and money.

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