As the global space race accelerates and the UK’s aerospace sector gains momentum, Beldam Crossley has revealed that one of its advanced engineering materials has already been quietly supporting components destined for orbit.
The material, Crossflon® 905, is a high-strength PTFE-based compound engineered to deliver exceptional wear resistance, dimensional stability and ultra-low friction in demanding mechanical environments.
Long trusted across critical industrial applications, it has remained largely undisclosed — until now — that Crossflon® 905 has also been used in satellite bearing applications, where it maintains low friction and structural integrity in cryogenic temperatures and vacuum conditions. In these environments, reliability is measured not just in years, but in orbital lifetimes.
With its distinctive space-grey finish, Crossflon® 905 has become a quiet performer in systems operating under some of the harshest conditions known to engineering.
Engineered for Extremes — From Cryogenics to Orbit
Crossflon® 905 was originally developed to solve a fundamental engineering challenge: maintaining strength, dimensional stability and low friction under continuous mechanical load.
Unlike conventional PTFE materials, it delivers enhanced structural performance while retaining the low-friction characteristics essential to moving mechanical systems.
Operating across an exceptional temperature range of –200°C to +280°C, it performs reliably in environments spanning cryogenic systems through to high-temperature industrial machinery. This capability makes it ideally suited to aerospace environments, where components must endure rapid temperature fluctuations, vacuum exposure and extended operational lifetimes without lubrication.
Put simply, it is a material that continues performing when others begin to fail.
A Material Designed to Carry the Load
Crossflon® 905 is engineered for mechanically demanding applications, offering high strength and wear resistance across components including bearings, wear pads, guide elements, sliding surfaces, and pump and compressor components.
These are applications where friction, load and dimensional precision intersect.
In satellite systems — where maintenance is impossible and failure is not an option — these properties become even more critical. This is where Crossflon® 905 has proven its value.
Precision Manufacturing on Earth — Performance Beyond It
Crossflon® 905 also offers excellent machinability, enabling precision manufacturing of complex components with tight tolerances and high-quality surface finishes.
Typical capabilities include tolerances of ±0.05–0.10 mm, alongside controlled surface finishes optimised for low-friction interfaces.
For aerospace engineers, this combination of material stability and machining precision supports the development of highly reliable, performance-critical assemblies.
A Hidden Aerospace Pedigree
While Beldam Crossley has long been recognised for its polymer engineering expertise, the use of Crossflon® 905 in space-related applications has remained largely behind the scenes — reflecting the aerospace sector’s focus on proven reliability over publicity.
However, with the UK space industry expanding rapidly and new satellite programmes emerging, the company believes the time is right to bring this capability into the spotlight.
The View from the Engineer’s Bench
Few understand the material better than Beldam Crossley’s engineering team, which brings together over a century of combined experience in advanced polymer engineering.
“When you design materials for extreme environments, you quickly learn that reliability is everything. Crossflon® 905 was developed to deliver strength, stability and low friction where conventional PTFE materials struggle. Seeing it perform in satellite bearing applications is incredibly rewarding — it proves the material can operate not just in challenging conditions, but in the most demanding environment of all.”
Ready for the Next Phase of the Space Race
The UK’s space economy is entering a new phase of growth, driven by investment in satellite manufacturing, launch capability and advanced aerospace engineering.
This demands materials that can perform in environments with zero margin for error.
Crossflon® 905 delivers high load capability, ultra-low friction, cryogenic performance and dry-running operation without lubrication.
It is a material engineered for extremes — from industrial systems to the vacuum of space.
And while its role in satellite applications may have been one of Beldam Crossley’s best-kept secrets, it now stands as a powerful demonstration of the UK’s advanced manufacturing capability.
Because at Beldam Crossley, the team hasn’t just walked the walk — they’ve already done the space walk.
