It depends on the application, the bushing assembly, the tip or tip assembly used, and in some cases, on the heater assembly used.
Gate Mate Lite assemblies are not to be used for processing filled thermoplastics, and are not recommended to be used in thermoplastics that require greater than 480°F (249°C) melt processing temperature. For the Mini Gate Mate, Medium Gate Mate/Gate Mate 4, and Jumbo Gate Mate, it may be possible to process filled thermoplastic depending on the tip used as well as the application. In general, standard point tips, standard super-sharp tips (standard super-sharp tips are available for the Medium Gate Mate/Gate Mate 4 only), and standard through-hole tips (not available for the Mini Gate Mate), are not to be used to process filled thermoplastics and are not to be used for processing thermoplastics that require greater than 480°F (249°C) melt processing temperature.
Depending on the application, wear-resistant point tips, wear-resistant super sharp tips (only available for the Medium Gate Mate/Gate Mate 4), and wear-resistant through-hole tips (not available for the Mini Gate Mate), may be used with filled thermoplastics (not recommended for thermoplastics that have greater than 30% filler including glass, mineral, talc, other), and are not recommended to be used in applications requiring greater than 635°F (335°C)melt processing temperature. Please note that even though wear-resistant tips may be used in select filled applications that do not exceed 635°F (335°C) melt processing temperature, only the Mini Gate Mate has a CIH heater option at this time. The Medium Gate Mate/Gate Mate 4 and Jumbo Gate Mate assemblies do not have a CIH heater option. In general it is not recommended to use the SCH coil heaters in applications that exceed 525°F (274°C) melt processing temperature. Some customers have had success using SCH heaters in applications that require greater melt processing temperatures that exceed 525°F (274°C), however this success largely depends on the molding application. If you are unfamiliar with using Gate Mate bushing assemblies for applications that require greater than 525°F (274°C) melt processing temperature, it is recommended that you consider using a D-Max Hot Sprue Bushing assembly with heated head. Similarly if you are building a multi-nozzle, thermally gated manifold system yourself and you expect to exceed 525°F (274°C) melt processing temperature, it is recommended that you consider using Stellar or Hot One nozzle assemblies depending on the part weight. If you have questions, please call your DME Customer Service Representative who will put you in contact with a DME Technical Service Representative to review your application. In general, Gate Mate nozzles and bushings should be used to process commodity grade resins only. Only the Mini Gate Mate with CIH heater can be used to process engineered grade resins.