Bonded seals alternatives

[bk2]

Hello all,
Anyone have suggestions on elastomers to use in place of bonded seals (elastomers such as Viton, Nitrile bonded to SS). I am looking for alternatives to reduce the cost substantially. The bonded seals I am using make up a huge chunk of the overall cost.
Requirements for the elastomer:
Cheap
Dynamic sealing
Unloading to 3,000 psi
Static sealing up to 10,000 psi
Temperauture domain - 20 to 250 deg F

Does anyone have any experience using PIP profile from Parker seals?

Thanks for your responses.
-bk


Development Engineer
Oilfield Industry

 

[flexibox]

Hi There

Hypalon (Black) resistant to heat, ozone, weathering and oxidizing chemicals. Good with strong acids and bases at room temperature. Has excellent impermeability to gases. Good to fair abrasion resistance. Hardness 65 Durometer (ShoreA temperature limit 250F. Used in Chemical and industrial applications that are driven primarily by chemical resistance criteria.

Neoprene (Black) Processed with a lead cure giving excellent resistance to water swelling. Has good oil, chemical and temperature resistance and excellent wear resistance. High Modulus material has tear strength capable of sustaining impeller tip speeds up to 6500fpm. Hardness 55 Durometer (Shore A) Temperature limit 250F. Used in floatation and moly circuits with success. Has shown excellent balance between abrasion and oil resistance in tar sands and oil shale duty. Excellent for pulp and paper applications where oils are used as flotation agents.

Butyl (Black) High resistance to environmental attack and low permeability to gases. Moderate wear resistance. Attacked by petroleum solvents, coal tar solvents and aromatic hydrocarbons. Fair to poor abbrasion resistance. hardness 60 Durometer (Shore A) Temperature limit 250F. Used in chemical, power utility, puklp & paper and industrial applications that are driven primarily by chemical resistance criteria.

 

[bk2]

Hello,
Thanks for the info. I do have choices for materials. Are you suggesting just using O-rings with back ups?
I am looking for a different methodology of sealing rather than looking out for different materials.

Development Engineer
Oilfield Industry

 

[diskullman]

Almost sounds like you really WANT to use bonded seals, but don't like the price. My mama told me, you better shop around! Try

http://www.dichtomatik.us/Products/Bonded-Seals.aspx

Russell Giuliano