o-rings and seals

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Problem Solving Products, Inc.

7108 S. Alton Way, Unit I
Centennial, Colorado 80112
(303) 758-2728

(303) 758-2728

Home > Glossary of Terms > E Definitions

Glossary - E's

Elastic limit (r) the greatest stress that a material is capable of sustaining without any permanent strain remaining upon complete release of the stress.

Elastomer (r) a viscoelastic macromolecular material that can respond to large deformations.

Electronegativity (sc) a material that has a tendency to attract electrons to itself.

Elongation (r) the extension of a uniform section of a specimen expressed as percentage of the original length.

Elongation, ultimate the elongation at the time of rupture.

Emulsifying agent (latex) (r) a surface-active substance used to facilitate the dispersion of an immiscible liquid compounding material in another liquid and to stabilize the emulsion thereby produced.

Epitaxial (sc) (Greek for “arranged upon”) the growth of a single-crystal semiconductor film upon a single-crystal substrate.

Erasable programmable read-only memory (EPROM) (sc) device that allows stored information to be erased; erasing is typically accomplished with ultraviolet light. Esters a compound formed by the elimination of water and the bonding of an alcohol and an organic acid. Characterized by “–C=C-O-“ bonding.

Etch (sc) a process for removing material in a specified area through a wet or dry chemical reaction or by physical removal, such as a sputter etch.

Ethers a compound characterized by “-O-“ bonding

Evaporation (sc) a process step that uses heat to change a material (metal or metal alloy) from its solid state to a gaseous state with a result of the source being deposited on wafers. Both electron beam and filament evaporation are common in semiconductor fabrication.

Exposure (sc) method of defining patterns by the interaction of light or other form of energy with photoresist that is sensitive to the energy source.

Extender (r) an organic material used to augment the polymer in a compound.

Extensometer (r) a device for determining elongation of a specimen as it is strained.

Extrudate (r) the material that issues from an extruder.

Extruder machine designed to force a rubber or rubber mix through an orifice, which is often shaped to the geometry of the desired product.

Extrusion (r) 1) the continuous shaping of a material during plastic passage through a die. 2) the displacement of a part of the seal into the clearance gap under action of fluid pressure or thermal expansion.

(sc) This term is generally associated with the semiconductor industry.
(r) This term is generally associated with the rubber industry.

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Our specialty is solving sealing problems for original equipment manufacturers. We carry o-rings, seals, custom molded rubber parts, wipers, diaphrams, valves and u-cups in all types of materials including Kalrez®, FKM fluorocarbon, Simriz®, nitrile (buna-n), silicone, rubber, neoprene, polyurethane, TFE and FEP encapsulated.



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