Manufacturer: Saint-Gobain Performance Plastics (CHRTape)
Product Family: CHR R Series
Backing: Calendared resintered skived PTFE film
Adhesive Options: Silicone PSA (R253) or Acrylic PSA (R233)
Operating Temperature:
- R253: −73°C to +260°C
- R233: −40°C to +177°C
Overview
The Saint-Gobain CHR R Series is a high-performance skived PTFE pressure sensitive adhesive tape designed for demanding aerospace and industrial process environments.
The series is available in two variants:
- R253 — silicone adhesive system
- R233 — acrylic adhesive system
Both products use a skived PTFE film backing combined with a high-temperature adhesive layer.
PTFE provides:
- Non-stick surface properties
- Chemical resistance
- Thermal stability
- Abrasion resistance
- Moisture resistance
- Low friction performance
The CHR R Series is widely used in:
- Composite tooling
- Aerospace masking
- Process equipment protection
- High-temperature release applications
- Surface treatment operations
The material is engineered for clean application and residue-free removal in environments where contamination or dimensional instability could affect downstream manufacturing quality.
Product Overview
The CHR R Series uses a calendared and resintered skived PTFE film backing.
Skived PTFE film is manufactured by shaving thin layers from a solid PTFE billet, producing a highly uniform film with consistent surface characteristics and density.
Saint-Gobain applies proprietary modifications during manufacturing to improve:
- Abrasion resistance
- Mechanical durability
- Surface stability
- Resistance to curling and wrinkling
The result is a PTFE tape designed for stable long-term process use.
R253 — Silicone Adhesive Variant
The R253 version uses a silicone pressure-sensitive adhesive system rated to:
- +260°C continuous service
This makes it suitable for:
- Aerospace autoclave processes
- Composite cure cycles
- High-temperature tooling
- Elevated thermal process environments
R233 — Acrylic Adhesive Variant
The R233 version uses an acrylic pressure-sensitive adhesive rated to:
- +177°C continuous service
This variant is typically used for:
- Moderate-temperature masking
- Process protection
- Industrial release applications
Both variants share the same total thickness:
- 0.127mm total construction
- 0.076mm PTFE backing
- 0.051mm adhesive layer
Aerospace-Relevant Applications
Composite Tooling and Release Surfaces
PTFE tapes are widely used during aerospace composite manufacturing.
The CHR R Series provides:
- Non-stick release performance
- Surface protection
- Clean part separation
- Thermal stability during cure cycles
R253 is particularly suited to autoclave composite environments due to its higher temperature capability.
Aerospace Surface Treatment Masking
Aerospace manufacturing often involves:
- Anodising
- Chemical milling
- Electroplating
- Surface conversion treatments
PTFE tapes provide chemical resistance and clean removal performance during these processes.
Process Equipment Protection
The CHR R Series can be applied to:
- Rollers
- Platens
- Jig faces
- Laminating equipment
- Coating systems
to reduce contamination and material build-up.
High-Temperature Masking
During paint stoving and elevated-temperature coating processes, PTFE tapes maintain:
- Edge definition
- Dimensional stability
- Clean removal properties
Electrical Isolation Applications
The dielectric strength of the R Series exceeds:
- 11,000 volts
This provides electrical isolation capability in process environments where contact with electrical systems may occur.
Important Aerospace Clarification
The CHR R Series is primarily a process and release tape system.
It is generally used within:
- Aerospace manufacturing
- Composite processing
- Tooling environments
- Industrial process systems
It is not a certified flight-surface repair tape or structural aerospace tape.
Always verify suitability against:
- Programme requirements
- OEM process documentation
- Engineering authority approval
- Current manufacturer documentation
before specification or aerospace application use.
Performance Characteristics
Temperature Capability
R253 Silicone Adhesive
- −73°C to +260°C continuous service
R233 Acrylic Adhesive
- −40°C to +177°C continuous service
The R253 silicone system provides significantly higher thermal capability for elevated-temperature environments.
Adhesion Performance
R253
- 3.8 N/cm adhesion to steel
R233
- 2.7 N/cm adhesion to steel
These are moderate adhesion levels engineered for clean removal rather than permanent bonding.
Tensile Strength
Both variants provide:
- 70 N/cm tensile strength
This supports durability during handling and process use.
Elongation
Both variants exceed:
- 150% elongation at break
This improves conformability around curves and irregular surfaces.
Dielectric Strength
Both variants exceed:
- 11,000 volts dielectric strength
Chemical Resistance
PTFE provides strong resistance to:
- Acids
- Solvents
- Alkalis
- Hydraulic fluids
- Aerospace chemicals
Moisture Resistance
PTFE does not absorb moisture and performs well in humid process environments.
UV Resistance
PTFE film provides strong UV stability for industrial and manufacturing exposure conditions.
Technical Data Snapshot
| Property | R253 | R233 |
|---|---|---|
| Backing Material | Skived PTFE Film | Skived PTFE Film |
| Adhesive System | Silicone PSA | Acrylic PSA |
| Total Thickness | 0.127 mm | 0.127 mm |
| Backing Thickness | 0.076 mm | 0.076 mm |
| Adhesive Thickness | 0.051 mm | 0.051 mm |
| Adhesion to Steel | 3.8 N/cm | 2.7 N/cm |
| Tensile Strength | 70 N/cm | 70 N/cm |
| Elongation | 150%+ | 150%+ |
| Dielectric Strength | >11,000 volts | >11,000 volts |
| Operating Temperature | −73°C to +260°C | −40°C to +177°C |
| Available Widths | 6.35mm to 381mm | 6.35mm to 381mm |
| Master Roll Size | 33m × 381mm | 33m × 381mm |
Values are typical figures from manufacturer technical documentation and should not be used for specification purposes without verification.
Specifications and Qualification Context
The CHR R Series technical documentation does not directly reference:
- AMS specifications
- MIL specifications
- OEM aerospace approvals
However, PTFE process tapes are commonly used within aerospace environments involving:
- Composite manufacturing
- Surface treatment masking
- Process tooling
- Aerospace production systems
Engineers and procurement teams should verify:
- Qualification requirements
- Approved materials status
- OEM process approvals
- Batch traceability requirements
before programme use.
Manufacturer — Saint-Gobain Performance Plastics
Saint-Gobain Performance Plastics is a global manufacturer of engineered polymer materials and high-performance tape systems.
The CHRTape product family includes:
- PTFE tapes
- Silicone tapes
- Coated fabric tapes
- High-temperature process tapes
- Aerospace masking materials
The company supports aerospace, industrial, and advanced manufacturing sectors worldwide.
How SpeedTapes Helps
SpeedTapes.com is a structured aerospace tape reference platform designed for:
- Aerospace engineers
- Procurement teams
- MRO specialists
- Manufacturing engineers
- Technical sourcing professionals
For products like the CHR R Series, SpeedTapes provides:
- Structured technical data
- PTFE tape comparisons
- Application guidance
- Aerospace process context
- Manufacturer references
- RFQ support
SpeedTapes does not directly supply tape products.
The platform helps connect aerospace requirements with qualified manufacturers and approved distributors.
Request Technical Guidance
Need help selecting the correct PTFE process tape for your application?
SpeedTapes can assist with:
- R253 vs R233 selection
- Temperature capability guidance
- Aerospace masking support
- Composite tooling recommendations
- Alternative PTFE tape comparisons
- Technical sourcing assistance
Submit an RFQ or technical enquiry today.
Frequently Asked Questions
What is the Saint-Gobain CHR R Series?
The CHR R Series is a skived PTFE pressure sensitive adhesive tape available with silicone or acrylic adhesive systems for aerospace and industrial process applications.
What is the difference between R253 and R233?
R253 uses a silicone adhesive rated to +260°C, while R233 uses an acrylic adhesive rated to +177°C.
What is skived PTFE?
Skived PTFE film is produced by shaving thin layers from a solid PTFE billet to create a uniform, high-performance film material.
Can the CHR R Series be used in aerospace composite manufacturing?
Yes. The R253 silicone adhesive variant is commonly used in aerospace composite tooling and autoclave process environments.
Does the CHR R Series leave adhesive residue?
The tape is designed for clean removal without significant adhesive residue on the mating surface.
Is the CHR R Series chemically resistant?
Yes. PTFE provides strong resistance to many aerospace and industrial process chemicals.
What widths are available?
The material can be slit from 6.35mm to 381mm widths depending on application requirements.
Is the CHR R Series a certified aircraft repair tape?
No. The CHR R Series is a process and release tape used in manufacturing and industrial process environments rather than aircraft structural repair applications.