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O-Rings

Novotema engineers have been advising, designing and manufacturing pneumatic elastomer seals for over 40 years. With pneumatic seals designed and manufactured to the highest quality standards, you can ensure that our sealing solutions will improve equipment reliability and performance, reduce downtime and lower the cost of ownership for your application.

What are pneumatics?

Pneumatic system technologies are operated by compressed air and are referred to as a type of automation control. The pressurised gas is used to actuate an end effector to complete the movement type and can range from common cylinders to more specific application types, such as grippers.

Pneumatics are commonly used in many industries including, automotive, medical, packaging, material handling, and robotics. Typically, pneumatics are most effective in hazardous environments where a spark could cause disastrous implications.

More innovative and creative uses of pneumatics are being introduced to many industries, providing greater efficiencies through robotics and showcasing the talent of engineering.

Due to the demanding requirements in these applications, pneumatic seals must have:

  • Long life
  • Withstand friction
  • Liquid resistance (in some applications)
  • Wide temperature capabilities

Where traditional o-rings, diaphragms and membranes are not suitable, we offer a specialist custom parts service, where one of our expert engineers will work with you to produce the required sealing solution.

Anti-wear gaskets

Anti-wear gaskets (also known as wear gaskets) for pneumatic cylinders are used to keep the piston centred, allowing for an even pressure distribution on the seals. These wear gaskets are typically operate in harsh temperatures often found in pneumatic applications due to the heat generation from the friction, but also the operation of the cylinder itself.

When selecting the correct wear gasket for pneumatic cylinders, these considerations must be taken into account and for the selection of the elastomer material.

Lip seals for pneumatics

Lip seals are ideal for rotary applications due to the seals nature to maintain friction. An effective lip seal for pneumatics requires constant contact with its rotating counterpart in order for sealing to occur. If further reduction in friction and wear is required, we offer specialist surface treatments to enhance the performance.

Pneumatic O-rings

Novotema manufactures high-quality o-rings for many different pneumatic and actuator sealing applications in both standard and custom sizes, from 1mm to 450mm internal diameter and 0.6mm to 12mm cross-section.

Diaphragms and membranes

With an infinite amount of sizes available, membranes and diaphragms are typically used in pneumatic control valves and actuators. They are manufactured to very tight tolerances with the appropriate materials to withstand a homogeneous compounding process with considerations such as chemical media, pressure/ vacuum, mechanical requirements and lifetime parameters.

Elastomer materials for pneumatic applications

Novotema’s access to a wide range of elastomer compounds ensures that the finished product meets the application requirements, including conformance to industry-specific standards.

What industries use pneumatics and actuators?

Novotema has a wealth of experience delivering sealing solutions to a diverse range of industries. With experts involved with many industries and a deep understanding of the unique challenges involved, Novotema can advise and supply pneumatic sealing solutions for the following industries:

  • Automotive
  • Chemical Processing
  • Domestic
  • Food & Dairy
  • Industrial
  • Medical
  • Oil & Gas

Looking for more information around choosing the right pneumatic sealing solution for your industry? We’ve put together a blog that provides an insight into pneumatic sealing.

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