Compression Springs

Compression Springs

Compression Springs are precision-engineered mechanical components used in glass coupling assemblies, PTFE bellows systems, and flexible process connections to provide controlled axial force, shock absorption, vibration damping, and dimensional stability.

In glassware installations—where components are fragile and sensitive to stress—compression springs play a critical safety and performance role by regulating mechanical loads and protecting glass from over-tightening or movement-induced damage.

Functional Role in Glassware Assemblies

Compression springs are integrated within or alongside:

• PTFE Bellows
• Vacuum Bellows Systems
• Backing & Bellows Flange Assemblies
• Distance Locking Bolt Systems
• Insert & Reinforcement Assemblies

Primary Functions

• Maintain consistent axial preload
  
• Absorb vibration and mechanical shock
  
• Compensate thermal expansion & contraction
  
• Prevent excessive force on glass joints
  
• Improve fatigue life of flexible assemblies

Design & Construction Features

• Precision-wound spring geometry
• Uniform pitch for consistent compression
• Controlled spring rate for predictable load response
• Smooth surface finish to avoid abrasion
• Designed for repetitive compression cycles

Material Options

Compression springs are manufactured in materials selected for strength, corrosion resistance, and fatigue life:

• Stainless Steel (SS 302 / SS 304 / SS 316)
• Spring Steel
• Special Alloy Steels (on request)

Material selection depends on process environment, temperature, and chemical exposure.

Thermal & Mechanical Performance

• Maintains elasticity under temperature cycling
• Supports controlled movement without permanent deformation
• Prevents load spikes during thermal expansion
• Suitable for vacuum and pressure glass systems

Vacuum & Bellows Applications

In PTFE Vacuum Bellows, compression springs:

• Support axial stability
• Assist movement control
• Reduce stress on convolutions
• Improve long-term vacuum integrity

They are especially recommended for DN ≥ 80 vacuum-rated assemblies.

Dimensional Compatibility

• Available across multiple DN sizes
• Designed to integrate with standard glass coupling geometries

Compatible with:

• Inserts & reinforcement rings
• Bellows flanges
• Adaptor flanges
• Distance locking bolt arrangements

Technical Data (Typical Range)

Parameter	Specification
Product Type	Compression Springs
Material Options	SS 302 / SS 304 / SS 316 / Spring Steel
Spring Type	Helical Compression Spring
Nominal Sizes	DN 25 – DN 300 (application dependent)
Operating Mode	Vacuum / Pressure
Function	Axial load control, vibration damping
Temperature Suitability	As per selected material
Fatigue Resistance	Designed for cyclic operation
Installation	Integrated into coupling or bellows assembly
Customization	Spring rate, length, wire diameter

Typical Applications

• PTFE vacuum bellows assemblies
• Glass-to-glass flexible connections
• Glass-to-metal transition joints
• Distillation columns & glass pipelines
• Pilot plant and R&D glass setups
• Vibration-sensitive process equipment

Industries Served

• Chemical Processing
• Pharmaceutical Manufacturing
• Research & Pilot Plants
• Specialty Chemicals
• Glass-lined & Hybrid Systems

Customization & Engineering Support

• DN-specific spring sizing
• Spring rate optimization
• Material selection for corrosive media
• Integration with existing coupling designs

Key Advantages

• Protects fragile glass components
  
• Improves system safety
  
• Extends bellows service life
  
• Reduces vibration transmission
  
• Ensures controlled mechanical loading