sales@adtech.co.uk
Application
Free issue parallel springs fully encapsulated in PTFE for use in a chemically aggressive environment.
The Challenge
The customer supplied precision springs that required full chemical protection without compromising performance.
Key constraints:
- Maintain spring flexibility and function
- Achieve complete sealing to prevent ingress
- Ensure long-term reliability in harsh conditions
- Work with customer free-issue components without damage or distortion
The Solution
Each spring was fully encapsulated in a thin PTFE layer, forming a continuous barrier between the metal component and its operating environment.
Specification:
- Spring OD: 37mm
- Spring length: 50mm nominal
- PTFE wall thickness: 0.15mm
- Fully sealed at both ends
Post-processing included spark testing to verify seal integrity and eliminate risk of pinholes or weak points.
Process Highlights
- Controlled encapsulation to maintain spring geometry
- Precision sealing at both ends to create a complete barrier
- Thin-wall PTFE application to balance protection with flexibility
- 100% spark testing for validation of sealing performance
The Outcome
A fully protected spring assembly capable of operating in chemically aggressive environments without corrosion or degradation.
- Extended component lifespan
- Maintained mechanical performance
- Eliminated risk of chemical ingress
- Ready-to-use assemblies supplied to customer specification
Wider Capability
This approach is not limited to this spring geometry. Encapsulation can be applied to a wide range of free-issue components where protection, isolation, or compliance is required.
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