FFKM PERFLUOROELASTOMER

Ultimate Chemical Resistance FFKM O-Rings

When standard elastomers fail, FFKM delivers. Engineered for the most demanding chemical processing, pharmaceutical, and semiconductor applications where failure is not an option.

600°F+
Max Temperature
1900+
Chemical Resistance
99.9%
Purity Level
50+
Years Service Life
Get Technical Quote Cost Calculator

FFKM vs Standard Elastomers

Concentrated H₂SO₄
FFKM ✓ FKM ✗
Amines & Bases
FFKM ✓ FKM ✗
ETO Sterilization
FFKM ✓ FKM △

FFKM Grade Selection Matrix

Choose the optimal FFKM compound for your specific application requirements. Each grade offers unique advantages for different operating conditions.

Kalrez® 4079

General Purpose FFKM

Temperature
-15°F to 600°F
Hardness
75 Shore A

Best For:

  • • General chemical processing
  • • Broad chemical compatibility
  • • Cost-effective FFKM solution
  • • Aggressive acids and bases
$85-120/piece
Standard sizes

Kalrez® 6375

Plasma Resistant

POPULAR
Temperature
-15°F to 600°F
Hardness
75 Shore A

Best For:

  • • Semiconductor plasma chambers
  • • Atomic layer deposition
  • • CVD equipment sealing
  • • Aggressive plasma environments
$145-200/piece
Semiconductor grade

Chemraz® 505

Low Temperature FFKM

Temperature
-40°F to 500°F
Hardness
70 Shore A

Best For:

  • • Low temperature applications
  • • Cryogenic chemical exposure
  • • Dynamic sealing applications
  • • Enhanced flexibility needed
$95-140/piece
Low temp specialty

FFKM Chemical Resistance Database

Comprehensive chemical compatibility data for over 1900 chemicals. Our engineering team maintains the industry's most complete FFKM resistance database.

Sulfuric Acid Hydrofluoric Acid Ammonium Hydroxide Hydrogen Peroxide Ozone

Strong Acids

Concentrated acids that attack standard elastomers

Sulfuric Acid (98%) Excellent
Nitric Acid (70%) Excellent
Hydrofluoric Acid Excellent

Strong Bases

Caustic solutions & amines

Ammonium Hydroxide Excellent
Sodium Hydroxide (50%) Excellent
Potassium Hydroxide Excellent

Solvents

Aggressive organic solvents

Methylene Chloride Excellent
Toluene Excellent
Acetone Excellent

Oxidizers

Strong oxidizing agents

Hydrogen Peroxide Excellent
Ozone Excellent
Chlorine Dioxide Excellent

FFKM Total Cost of Ownership Calculator

Calculate the true value of FFKM seals including extended service life and reduced maintenance costs.

Application Parameters

200°F 400°F 600°F

5-Year TCO Analysis

Material Costs

Standard FKM $2,500
FFKM Premium $12,500

Maintenance Costs

FKM Replacements $45,000
FFKM Replacements $5,000

Downtime Costs

FKM Failures $200,000
FFKM Reliability $20,000
FFKM Savings: $210,000
ROI: 2,080% over 5 years
Get Detailed TCO Analysis

Critical Industry Applications

FFKM seals are essential in industries where chemical compatibility and reliability are non-negotiable.

Semiconductor

Plasma & Etch Chambers

FFKM seals withstand aggressive plasma environments and etching gases that destroy standard elastomers in semiconductor manufacturing.

Key Requirements:

  • • Plasma resistance (CF₄, CHF₃, NF₃)
  • • Ultra-high purity (10 ppb extractables)
  • • Thermal cycling stability
  • • Low particle generation
Typical Cost Savings $500K+ annually

Pharmaceutical

API Processing

FDA-compliant FFKM seals for pharmaceutical processing where product purity and regulatory compliance are critical.

Key Requirements:

  • • FDA 21 CFR 177.2600 compliance
  • • USP Class VI certification
  • • SIP/CIP sterilization resistance
  • • Low extractables & leachables
Contamination Prevention 99.99%

Chemical Processing

Extreme Conditions

Ultimate chemical resistance for the most aggressive processing environments where equipment reliability is paramount.

Key Requirements:

  • • Concentrated acid resistance
  • • High temperature stability
  • • Explosive decompression resistance
  • • Long-term aging resistance
Service Life Extension 10x improvement

FFKM Technical Specifications

Comprehensive technical data for FFKM materials to support your design and application engineering.

Property Test Method Kalrez 4079 Kalrez 6375 Chemraz 505
Hardness (Shore A) ASTM D2240 75 ± 5 75 ± 5 70 ± 5
Tensile Strength (psi) ASTM D412 1,450 1,600 1,200
Elongation (%) ASTM D412 200 180 250
Compression Set (%) ASTM D395B 15 20 18
Temperature Range Continuous Service -15°F to 600°F -15°F to 600°F -40°F to 500°F
Specific Gravity ASTM D792 2.05 2.10 2.00

Standard Size Availability

AS568 Standard Sizes 004-395 Available
Metric Sizes Common Sizes Stocked
Custom Sizes 2-3 Week Lead Time

Express Service: Critical sizes available with 48-hour emergency service for semiconductor and pharmaceutical applications.

Quality Certifications

ISO 9001:2015 Certified
Quality management system
FDA 21 CFR 177.2600
Pharmaceutical compliance
AS9100D Aerospace
Aerospace quality standard

Get Your FFKM Technical Quote

Our FFKM specialists will help you select the optimal compound and provide detailed technical and commercial proposals within 24 hours.

24-Hour Response

Technical specifications and commercial quote delivered within one business day.

Free Samples

Evaluation samples for qualified applications. Test before you commit.

Engineering Support

Our FFKM specialists provide application engineering and design recommendations.

Trusted by 500+ companies worldwide including Fortune 500 manufacturers

Intel Pfizer Applied Materials Merck Boeing

Frequently Asked Questions