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RA Flux
Rosin-activated flux.

Radiation Crosslinking
The act of crosslinking a material with ionizing radiation. (Most Raychem products are radiation crosslinked, with an electron beam as the form of ionizing radiation.) See also Crosslinking by Irradiation.

Rated Temperature
The maximum temperature at which a component can operate for extended periods with acceptable changes in its basic properties.

Rated Voltage
The maximum voltage at which an electric component can operate for extended periods without undue degradation.

Rear Release Contacts
Connector contacts designed to be released and removed from the rear (wire side) of the connector. The removal tool engages the contact from the rear and pulls the contact out of the connector contact retainer.

Receptacle
Usually the fixed or stationary half of a two-piece multiple contact connector. Also the connector half usually mounted on a panel and containing socket contacts.

Recover (Heat-shrinkable Components)
Activation of the elastic memory principle (usually with heat) to cause a tubing or molded part to return to its original size.

Recovered ID (RID)
In heat-shrink tubing, the guaranteed maximum internal diameter of tubing after being freely recovered.

Recovery Temperature
The minimum temperature required to fully shrink a product, that is, for the product to recover completely.

Removable Contact
A contact that can be mechanically joined to or removed from an insert. Usually special tools are required to lock the contact in place or remove it for repair or replacement.

Resistance
A measure of the difficulty in moving electrical current through a conductor or insulation when a voltage is applied. It is measured in ohms.

Ribbon Cable
Flat cable with conductors that have been individually insulated together. Its structure is usually characterized by individual colors of insulation for each conductor, although a single color may be used for all conductors.

RID
See Recovered ID.

RMA Flux
Rosin-mildly-activated flux.

Rope Lay
A type of conductor lay that uses stranded conductors as components to build a larger conductor.

RPN (Raychem Product Number)
A 10-digit number (such as 123456-4-001) assigned to every standard product and every product manufactured on a special manufacturing order (SMO). The first 6 digits represent the PCN (Product Control Number), followed by a 1-digit MOD Code, and finally a 3-digit suffix. See also MOD Code and SMO.

RT and RW specifications
Specification that describes standard product properties. Qualification and acceptance inspection criteria are incorporated into RT and RW specifications. RT and RW specifications are issued and controlled by the Specifications Group.