Proper Elastomeric Seal Selection for Process Analyzer Sample Systems

1. Medium Pressure �Cone & Thread� Fittings: Are labor intensive costing approximately $16.00 per connection in labor costs necessary to perform cutting, de-burring, coning threading and installation processes. Additionally, Cone and Thread style fittings require costly and specialized equipment and the technicians who work with these fittings must be highly skilled. Finally, Cone & Thread fittings are recognized to be prone to re-work in vibration areas and from shipping, requiring full inspection prior to equipment start-up. Parker MPI� Fittings From Parker Hannifin: Cut initial installation labor by 50%, requiring less than $4.00 in labor cost per connection. Since they are a compression style fitting, MPI� fittings utilize no special tools, equipment, or require no specialized training. Finally, Parker MPI� provides for exceptional vibration performance. They do not require any re-work or a need to have a lengthy inspection process prior to equipment start-up.Medium Pressure �Cone & Thread� Fittings: Are labor intensive costing approximately $16.00 per connection in labor costs necessary to perform cutting, de-burring, coning threading and installation processes. Additionally, Cone and Thread style fittings require costly and specialized equipment and the technicians who work with these fittings must be highly skilled. Finally, Cone & Thread fittings are recognized to be prone to re-work in vibration areas and from shipping, requiring full inspection prior to equipment start-up. Parker MPI� Fittings From Parker Hannifin: Cut initial installation labor by 50%, requiring less than $4.00 in labor cost per connection. Since they are a compression style fitting, MPI� fittings utilize no special tools, equipment, or require no specialized training. Finally, Parker MPI� provides for exceptional vibration performance. They do not require any re-work or a need to have a lengthy inspection process prior to equipment start-up.

2. Topics Elastomeric Seals & NeSSI Compounding O-Ring Design Chemical Compatibility

3. Elastomeric Seals & NeSSI

4. Elastomeric Seals & NeSSI

5. Elastomeric Seals & NeSSI

6. 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 Here are some general descriptions of the products we make.Here are some general descriptions of the products we make.

7. Elastomeric Seals & NeSSI

8. �� designs and manufactures engineered elastomeric o-ring seals.�

9. Extrusion & Nibbling Failure Modes

10. 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.)

11. 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)

17. 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.

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

19. 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

20. 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

26. 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

27. 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%

28. 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

34. Acknowledgements

35. Welcome to ISA 2003 and the unveiling of Parker IntraFlow�. This revolutionary solution to analyzer problems will reduce your process analyzer sample system cost of ownership by up to 50%. Welcome to ISA 2003 and the unveiling of Parker IntraFlow�. This revolutionary solution to analyzer problems will reduce your process analyzer sample system cost of ownership by up to 50%.