The field of hydraulic gaskets appears to be stable and devoid of innovation, but is this really the case? As those within the sector know all too well, the majority of hydraulic gaskets are developed in rubber. Furthermore, in terms of application, gaskets – for example for hydraulic cylinders – are standardised, and so in terms of dimension, there are no particular signs of innovation.

One thing that is, however, evolving, is the innovative approach to materials.

Hydraulic gaskets: rubberised fabric or new materials?

As previously said, the hydraulic seal market is in general covered by rubber and rubberised fabrics. However, rubberised fabric is relatively expensive and may not be suitable for all projects or uses. At GBL, in response to market indications and with the aim of providing a solution that optimises production costs, we have been studying the application of alternative materials based on tailor-made polymers.

Can new-generation elastomers and polymers always be a substitute for rubberised fabric? Obviously not. Although some innovative materials guarantee extreme efficiency – providing the same performance as rubberised fabric at a significantly lower cost – they are not suitable in all cases.

At the very beginning of a project, our technicians, in collaboration with the Client, assess the possibility of using new materials.

 

The best materials for hydraulic gaskets

The hydraulic seal sector is therefore not as static as in the past, at least in terms of materials and the possibility to create fully tailor-made materials to design. At GBL, we have access to thermoplastic materials, polymers and rubberised fabrics to cover a wide range of demands.

In choosing the correct material, we need to take into account a series of parameters that concern the actual use of the gasket. In particular, we examine:

• mechanical properties
• resistance to deformation
• resistance to abrasion
• resistance to tearing
• elastic performance
• impermeability to air and gas
• resistance to UV radiation
• resistance to fire
• dielectric properties
• chemical compatibility 

 

Choosing the right material is one of the most important factors in designing an efficient and durable hydraulic gasket that will not cause damage of cylinders or pistons. With extremely high pressures, for example, a traditional rubberised fabric might be the best choice.

There are three rubberised fabrics that we at GBL handle:

• Black NBR reinforced with cotton
• Black NBR reinforced with aramid fibre
• Green FKM reinforced with aramid fibre

 

In addition to this type of material, we also offer 12 polymers and 9 thermoplastics. In addition, new materials can be developed thanks to our collaboration with external Research & Development laboratories.

Hydraulic seals and piston seals: GBL products

The range of gaskets that we produce cover all the demands of the hydraulic sector, with products readily available from the catalogue or made to measure.

• Items by design
  Made-to-measure solutions in response to new demands
• Special membranes and O-Rings
• Seals for hydraulic pistons
• Seals for water pumps-pistons

Special seals for high pressures of up to 600 bar and low-pressure seals for hot and cold water that can run dry for up to 45 minutes.

• Collars and scrapers

 

Do you want to guarantee the utmost quality and durability, with a choice of materials for maximising efficiency and optimising costs? Contact us!

GBL for innovation in the field of hydraulic seals

At GBL, you can count on a constant focus on new materials and high-efficiency solutions for the production of your hydraulic seals for cylinders and pistons.

Our plant in Livorno offers you full management of your project, from confirmation of the design to the selection of materials, right up to production.

The quality of our hydraulic seals is guaranteed by UNI EN ISO 9001 and IATF 16949 certification.

Are you looking for a reliable partner for your gaskets? Contact us and tell us about your product needs!