Knowledge Base Glossary
Glossary is usually defined as an alphabetical list of technical terms in some specialized field of knowledge. This knowledge base glossary provides a collection of knowledge base documents that define many technical terms. These terms are arranged alphabetically, but you can quickly jump to a specific term by selecting its first letter from the index of the knowledge base glossary below.
26 Glossary Terms Found
P X T Value
A numerical value resulting from the multiplication of the internal pressure and the temperature of the fluid involved. In English system, usually psi x °F = PTValue.
Pan-Based Carbon
A carbon fiber derived from the carbonization process of a poly acrylonitrile fiber in an inert gas.
Permeability
The quality or condition of allowing passage of fluid/gases/air through a material such as rubber.
pH
The measure of the strength of an acid or base. On the pH scale, a neutral solution (neither acidic or basic) has a pH of 7. Solutions with a pH below 7 are acidic; the smaller the pH value, the more acidic the solution. Solutions with a pH above 7 are basic.
Piston
A cylindrically-shaped part which fits within a cylinder and transmits or receives motion by means of a connecting rod (Cylinder Rod).
Pitting
Surface cavities that occur on a metal as a result of galvanic corrosion or mechanical erosion.
Plasticizer
A compounding ingredient which can change the hardness, flexibility or plasticity of an elastomer.
Plate Finish
A commercially smooth surface, resulting from vulcanization between press plates (platens).
PLC
Abbreviation for: Programmable Logic Controller
PMI/VMI
Acronym for Partner Managed Inventory (also known as Vendor Managed Inventory), PMI is a streamlined approach to inventory management and order fulfillment. VMI involves collaboration between suppliers and their customers that changes the traditional ordering process. In BDI terms, Sourcing does not control, but influences, the inventory levels on PMI brands at D99. Check with Sourcing for active suppliers.
Point Surface Origin
Spalling from debris or raised metal exceeding the lubricant film thickness.
Polyurethane
A synthetic elastomeric material made by chemically reacting a polyol and a diisocyanate in such a manner that a high molecular weight polymer is formed.
Press Cure
A method of vulcanizing rubber by the use of heated platens, which can be brought together and separated by hydraulic pressure or mechanical action, to cure rubber sheet under pressure.
Press Length
The length of a product that can be vulcanized at one time in a press, limited by the length measurement of the press.
Pressure Absolute
The pressure above zero absolute. (i.e the sum of atmospheric and gage pressure)
Pressure Cycling
The variation of pressure in a system.
Pressure, Absolute (PSIA)
The pressure above zero absolute, i.e., the sum of atmospheric and gage pressure.
Pressure, Atmospheric
Pressure exerted by the atmosphere at any specific location. Sea level pressure is approximately 14.7 lbs./sq.in. absolute.
Pressure, Gauge (PSIG)
Pressure differential above or below atmospheric pressure, expressed as lbs./sq.in. or psig.
PSI
Abbreviation for "Pounds per Square Inch", a unit of pressure.
Pulley
A wheel, usually cylindrical, but polygonal in cross-section with its center bored for mounting on a shaft.
Pulp
In the papermaking industry, pulp is the primary raw material from which paper is made. It is a cellulose fiber product produced by the mechanical and/or chemical processing of wood.
Pump Shaft
The metal rod connecting the impeller of a pump to the motor.
Purge Fluid
A clean liquid (usually water) which is injected through a flush port to flush solid particles from the stuffing box area to minimize abrasive wear.
Purge Port
A hole in the side of a stuffing box through which a flushing fluid is injected.
PWM
Abbreviation for: Pulse Width Modulated