Bellows Manufacturer
Beldam Crossley offer a comprehensive PTFE machined bellows design and manufacturing service.
Our Machined Bellows are used in many applications and prove effective in reducing vibration transmission, whilst accommodating expansion and contraction in various equipment.
Made in Britain
Machined PTFE Bellows for Demanding Processing Environments Precision-engineered performance for chemical, food & beverage, and pharmaceutical equipment
When your equipment runs in aggressive, hygienic or highly regulated environments, material choice isn’t optional — it decides whether your operation runs reliably, safely and compliantly.
Beldam Crossley’s machined PTFE bellows, formulated with our performance-enhancing fillers, deliver a level of stability, cleanliness and chemical resistance that standard rubber bellows simply cannot achieve. Designed for OEMs and production facilities that depend on uninterrupted performance, our bellows ensure long service life and total process integrity in the most critical manufacturing environments.
Why Choose a Beldam Crossley Machined PTFE Bellow?
Beldam Crossley has been moulding PTFE for over half a century. We have since developed a wide range of High Performance Crossflon® materials, each suited to a specific application.
Unmatched Chemical Resistance
Our filled PTFE is inert to virtually all solvents, acids, alkalis and cleaning agents. It maintains full performance during CIP/SIP cycles and high-intensity washdowns — without swelling, softening or degrading.
Zero Contamination Risk
PTFE is naturally non-tainting, non-reactive and non-absorbent. It will not leach additives, shed particles or absorb media, protecting your batch integrity and meeting stringent hygiene standards.
Superior Cleanability for Hygienic Production
With an ultra-smooth, non-porous surface, PTFE eliminates microbial harbourage and resists residue build-up. Perfect for environments governed by GMP, FDA, EU 10/2011 and global food safety compliance.
High Temperature & Pressure Stability
PTFE remains dimensionally stable from –200°C to +260°C, easily handling steam sterilisation, thermal cycling and demanding process conditions where rubber would fail.
Engineered Fatigue Life
Each bellow is precision-machined for repeatable flex and long cycle life. No ageing, no hard-set, no cracking — just consistent performance over millions of cycles.
Precision Tolerances for Modern Machinery
Machining allows tight, repeatable tolerances and bespoke geometries, ensuring reliable fitment into pumps, dosing equipment, automation assemblies and specialist processing lines.
Designed for Harsh, Continuous Duty
UV, ozone, steam, abrasive media and aggressive chemicals pose no threat. In environments where rubber degrades, PTFE remains stable for years, reducing downtime and lowering whole-life cost.
Industries That Depend on Our PTFE Bellows
Beldam Crossley supplies some of the world’s most demanding production sectors:
- Chemical processing and dosing equipment
- Pharmaceutical manufacturing machinery
- Food & beverage processing lines
- Filling, dispensing and metering systems
- Hygienic valves, pumps and isolation systems
- Automation and robotic assemblies
Where contamination isn’t acceptable and downtime isn’t an option — PTFE is the material of choice.
Get in Touch
Contact our expert engineers today to learn more about our PTFE Bellows
Which Bellow is Best for my Environment?
Crossflon 1000
If you want the absolute best for flexible dynamic bellows
2005 / 1025 / 3313
If you need tougher, chemically resistant, but slightly stiffer bellows
1965
If your environment is harsh (subsea/high pressure)
| Crossflon Material Ref | Flexibility | Chemical Resistance | Temp. Range | Ideal Bellow Type |
|---|---|---|---|---|
| 1000 |
|
|
| Ultra-Flexible, Cleanroom & Chemical |
| 2005 |
|
|
| Chemical Process & Petrochem |
| 1025 |
|
|
| Pump/Valve Actuation |
| 3313 |
|
|
| High-Temperature Steam |
| 213 |
|
|
| Pneumatic/Low-Pressure |
| 1965 |
|
|
| Subsea/High-Pressure |
| 140x |
|
|
| Chemical/Thermal Duty |
| 1504 |
|
|
| Wear-Critical |
| 1702 |
|
|
| Dosing Systems |
| 1702 |
|
|
| Plant Bellows |
Why Standard Rubber Bellows Fall Short
Chemical Vulnerability
Rubber swells, softens and cracks when exposed to solvents, cleaning fluids and many process chemicals.
Risk of Contamination
Rubber can leach plasticisers, absorb product, transfer odours and shed particles into sensitive batches.
Shortened Service Life
Aging, hardening and fatigue under heat or pressure significantly reduce operating lifespan.
Poor Hygiene Compatibility
Rubber develops surface crazing, holds residues and cannot tolerate rigorous sanitation cycles required in food and pharma plants.
Temperature Limitations
Most elastomers cannot withstand CIP, SIP, steam sterilisation or thermal shock. For high-value, regulatory-controlled production, rubber is often a process risk rather than a solution.
PTFE Bellow vs Rubber Bellow — What’s the Difference?
| Performance Attribute | Beldam Crossley Machined PTFE Bellow | Standard Rubber Bellow |
|---|---|---|
| Chemical resistance | Exceptional; inert to almost all chemicals, CIP/SIP agents | Moderate; many chemicals cause swelling, softening or cracking |
| Contamination risk | Zero; non-absorbent, non-tainting, no leaching | High; can leach additives, absorb product, harbour bacteria |
| Temperature range | –200°C to +260°C, steam-safe | Typically –20°C to +120–200°C depending on elastomer |
| Fatigue life | Long cycle life; no ageing or hard-set | Fatigues and cracks; ageing reduces elasticity |
| Cleanability | Ultra-smooth, hygienic, residue-resistant | Micro-porous; surface crazing traps contamination |
| Dimensional stability | High — precision-machined, tight tolerances | Variable — moulding shrinkage, inconsistent walls |
| Regulatory compliance | Supports hygienic, food-grade & GMP standards | Often requires additional verification; hygiene risk |
| Service life | Years in harsh, continuous operation | Significantly shorter in aggressive environments |
| Total cost of ownership | Low — long life & reduced downtime | High — frequent replacement & maintenance |
Looking to eliminate contamination risks, extend service life and improve process reliability?
Speak with our engineering team to specify a custom Beldam Crossley PTFE bellow for your equipment.
