A Lande Group brand  |  Production (series, tailor-made)  |  Design + Development  |  Spares + Service  |  Manufacturer for 40 years


  Do you really sit in an ergonomic way
– do you sit comfortable?

Many hours at the helm –
pain in the back in the evening ...

Comfortable sitting starts with ergonomically correct positioning of the pelvis.The cushion takes the impact from the body weight and spreads the pressure.Beware of smooth "sofa" foam: You will sitting or relaxing in a way that your muscles expand a lot and you will find you get tired after a short time. In contrast stabilization of the body while sitting upright on a quality foam will maximizeyour alertness and fitness.

  Mounting of pedestals

• Preferably bases of pedestals are fastened with stainless steel screws
• thread M6 or ¼ inch
• Whenever possible use existing threads on the floor
• In case the pitch is different take an adapterplate of aluminium f.e.
• and drill holes (if necessary countersunk) for the old pitch and threads for the new base in it.

Stainless steel screws have a tendency to seize. A small amount of grease applied to the screws before they are fixed will help prevent this happening.

To avoid electrolytical effects (ss screws on casted aluminium + saltwater) we recommend Tef-Gel.


Aluminium is treated with an electrolyte process which provides a tough oxydized coating protecting the aluminium from influences by salt- and freshwater.


Powder is spread on polished cast aluminium and stoved afterward for protection against aggressive atmospheres.

  Stainless steel

Stainless steel is a high-chrome steel with superior corrosion resistance. The main stainless steel grades are AISI 304 with good corrosion resistance and AISI316 with excellent corrosion resistance.

About us

Originally specialized in manufacturing car seat covers, Pörtner Seats built the first complete seats for marine leisure boats in 1974. Additionally followed by a special range of products for arcades and casinos in 1984. The continuing success required the 1990 move to the new 1,000 square meter production hall in Bielefeld. In 1994, a further diversification with a technically advanced helm seat program for commercial shipping followed. In 2017, the company moved to Spenge (Eastern Westphalia) into an even more efficient production hall.

Quality, durable and ergonomic design always has been highest priority at Pörtner Seats. Mostly producing in short and medium runs, the Spenge-based company handles also individual orders for ambitious customers with high demands and attention to detail. To ensure the highest level of quality we have qualified and skilled employees working with us. All of them with many decades of experience in the high-end upholstery industry. We can also offer a repair and spare parts service to all our customer needs.

After a long-term cooperation with Zwaardvis BV, the Dutch manufacturer of seat and table pedestals has taken over Pörtner Seats in 2012. Pörtner Seats is responsible for the distribution of Zwaardvis products in Germany.

Pörtner Seats is a licensed Recaro dealer.

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