CA
Cellulose acetate
CAB
Cellulose acetate-butyrate
CAP
Cellulose acetate-propionate
Carbon Black
A black material used as a filler in rubber. It gives the rubber its black color and the hardness characteristics
Cavity
The features of a mold which are directly responsible for forming the final shape of a molded part
Charge
The measurement or weight of material used to load a mold at one time or during one cycle
Chemical bonding
A method for bonding rubber to secondary parts by applying special adhesives to the part prior to molding
Chipping
A defect normally created in the after molding flash removal process where fragile part surfaces and edges are chipped
Circularity
the form tolerance of the surface of a molded or ground ball in reference to a perfect sphere. Also referred to as "roundness"
Clamping Plate
A plate fitted to a mold and used to fasten the mold to a plate
Clamping Pressure
The pressure applied to the mold to keep it closed during a cycle
Clearance (in a sealing system)
The space between components in a mechanical system which is present to allow for manufacturing, thermal, and dynamic variations in the size and position of the components. As measured, it is equal to the distance between the sealing surface and the entrance to the seal groove. In a radial sealing system, this will be the space between the O.D. of the shaft or piston and the I.D. of the bore. As the clearance in a system increases, the tendency of the seal to dislodge from the grove and enter into the clearance space also increase, especially in applications where pressure is present. Care should be taken in radial applications to note whether clearances are being stated as radial clearances or as diametral clearances
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