Face Seal
A sealing system in which the sealing occurs in the axial direction of the seal. If the seal ring were to be placed flat upon a desktop, the seal compression would occur between the top and bottom of the seal
Family Mold
A multi-cavity mold where each of the cavities forms one of the component parts of the assembled finished part
Fan Gate
This gate is used to help reduce stress concentrations in the gate area by spreading the opening over a wider area. Less warpage of parts can usually be expected by the use of this gate type
FDA
Food & Drug administration
Feather Edge
The sharp, thin edge on parts such as wiper seals. Also called a "knife edge"
Feed
The area or orifice where rubber is injected or transferred into a mold cavity
File Transfer Protocol (FTP)
A safe and secure way to send a file from one data port to another. By using this method of data transferring, it allows both the sender and the receiver to acknowledge the transfer. It is like a cyberspace handshake
Filler
A finely divided material used to reinforce or modify elastomer physical properties, impart certain processing properties, or reduce cost. Typical examples are carbon black, clays, calcium carbonates and silicas
Fillet
A rounded filling of the internal angle between two surfaces of a part
Fin
The web of material remaining in holes or openings in a molded part which must be removed for final assembly
Flash
Extraneous material protruding from the surface of a molded part. Flash is generally found on a molded part at the parting line locations
Flexural strength
The ability of a material to flex without permanent distortion or breaking
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