1. TM Proper Elastomeric Seal Selection for Process Analyzer Sample Systems Steve Doe Parker Hannifin Corporation

2. TM Topics Elastomeric Seals & NeSSI Compounding O-Ring Design Chemical Compatibility Proper Elastomeric Seal Selection for Process Analyzer Sample Systems

3. TM No Matter Which System... Elastomeric Seals & NeSSI

4. TM Elastomeric Seals & NeSSI …Elastomeric Seals Are In The Picture!

5. TM Elastomeric Seals & NeSSI Seal Do’s & Don’ts Do: “Capture” IntraFlow Pressure Connector R-Max Surface Mount Interface (not SP76) SP76 Interface Don’t: Expose Seal ID to Fluid Flow

6. TM Metal and plastic retained elastomeric composite seals Polymeric and plastic seals Homogeneous and inserted elastomeric shapes Elastomeric O-Rings Rubber and plastic boots/bellows Extruded and precision-cut and fabricated elastomeric seals Thermoplastic engineered seals EMI shielding and thermal management products Seal Group Products

7. TM Elastomeric Seals & NeSSI Alternatives: Special Geometry O-Ring Seal Special Geometry O-Ring Seal Mold Onto Stainless Wafer Mold Onto Stainless Wafer Stick With 2-007 in Couterbore (what we have) Stick With 2-007 in Couterbore (what we have)

8. TM “… designs and manufactures engineered elastomeric o-ring seals.” Parker O-Ring Division

9. TM Extrusion & Nibbling Failure Modes Spiral Failure Explosive Decompression Cutting

10. TM The seal swells, shrinks, loses physical properties, or gets brittle. Excessive swell, brittleness, and dramatic loss in physical properties Shrinkage: the fluid is extracting something from the rubber (changing the base polymer usually isn’t required.) Failure Modes Chemical Attack

11. TM Butyl (IIR) Neoprene (CR) Ethylene-Propylene (EPR, EPDM) Fluorosilicone (FVMQ) Nitrile (NBR) Polyacrylate (ACM) Hydrogenated Nitrile (HNBR) Polyurethane (AU, EU) Silicone (VMQ) Fluorocarbon (FKM) Tetrafluoroethylene- Propylene (TFE/P) Perfluoroelastomer (FFKM) O-Ring Polymers

12. TM GLT V0835-75 A V1164-75 B V0834-75 GF V0965-80 GFLT V1163-75 Extreme V1260-75 Hifluor V3819-75 Parofluor TM V8545-75 NEW V1263-75 Performance of Fluorocarbon

13. TM Performance of Fluorocarbon

14. TM Parofluor is a true Perfluoroelastomer polymer The Parofluor base polymer is a composition of 3 or more monomers A & B represent different fillers and curatives used to enhance physical & thermal properties Parofluor™ Ultra

15. TM to 550to 6005 to 4465 to 6085 to 525Temperature Range, F 3525 1619 Compression Set, 70 hrs at 400F, % (2-214 O-rings) --+5 +6TR – 10, F 125150140124135Elongation, % 18001050115011311262Modulus at 100%, psi 27002450175017402045Tensile Strength, psi 8075 Durometer, Shore A Kalrez 1050 Kalrez 4079 Chemraz 505 FF200-75FF500-75Physical Properties to 527 30 - 160 1050 2200 75 Kalrez 6375 Parofluor™ Ultra

16. TM Parofluor™ Ultra

17. TM Base polymer determines chemical resistance, rough temperature limits, and rebound resilience In some materials, the high and low temp limits can be modified by other compounding ingredients. Provides “baseline” for abrasion resistance, compression set resistance, permeability These can (and almost always are) modified – up or down – by other compounding ingredients. Compounding: Polymer Selection

18. TM Polymer chains must be cross-linked to achieve resilience and elasticity. Sulfur Organic Peroxides Bisphenol Others: specialty materials have special cure chemistry Compounding: Cure Systems

19. TM Reinforcing agents add mechanical strength and resistance to abrasion & permeation Carbon black: standard for black compounds Silica: standard for non-black compounds Fillers lower the cost of a compound but reduce compression set resistance and elongation Compounding: Fillers

20. TM Oils and / or polymers to lower the low temp limits and make the material flow better Reduce resistance to compression set In “generic” materials, they are used to offset the hardening influence of high levels of filler Can extract into process fluids, resulting in seal shrinkage & hardening Compounding: Plasticizers

21. TM H I = Original Height H D = Compressed Height H F = Recovered Height HIHI HDHD HFHF Compression Set records the amount of permanent deformation of a compressed sample over time. The Lower the Number, the Better Sealing Ability. Compression Set

22. TM High Temp Compression Set

23. TM F S = “Spring Force” FSFS Compressive Stress Relaxation records drop in “Spring Force” over time generated by a compressed rubber sample. The Higher the Number, the Better Sealing Ability. Compressive Set Relaxation

24. TM Compressive Set Relaxation

25. TM O-Ring Design Is Easy! It’s the O-Ring groove that needs special attention

26. TM What makes a reliable O-ring design? Squeeze,Seal deforms significantly (~25%),Rubber does not compress or lose volume Stretch Gland fill,Volume-to-void ratio Surface finish,Balance of machining costs with application & testing needs Installation,Protect seal from sharp edges,Provide lead-in chamfers O-Ring Design

27. TM Compression expressed as a percentage of the free-state cross-sectional thickness of the O-ring. (O-Ring C/S) - Gland Depth (O-Ring C/S) Face Seal:20-30% Static Male/Female:18-25% Reciprocating:10-20% Rotary:0-10% O-Ring Squeeze

28. TM O-Ring volume as a percentage of Gland volume. (O-Ring Volume) (Gland Volume) About 25% void space or 75% nominal fill Need space in groove to allow for volume swell, thermal expansion, and increasing width due to squeeze O-Ring Gland Fill

29. TM O-Ring Gland Fill

30. TM www.parkerorings.com www.parofluor.com Website Resources

34. TM Acknowledgements Dan Ewing, Seal Application Engineering Manager Natalie Hicks, Seal Application Engineering Manager

35. TM Patent Pending Parker IntraFlow ™ Thank You!