Check the listing for details. Black Rubber Toughened CA Super Glue Medium Thick 2oz Kit Speaker Repair. Condition: New. Listed at 19.00 USD. 2oz Black Medium Thick Rubber Toughened CA Glue Kit High performance industrial grade adhesive. Black CA is used to bond parts, with focus on impact and shock absorbance qualities.. Some of the key advantages of using this adhesives are:Easy to useFormulated for LoudspeakersFast cure speed4 times stronger than regular CA Formulated for high vibration application, shock and impact resistantHumidity and heat resistantLab tested for optimal performanceOur Medium Thick Black Rubber Toughened CA speaker repair glue is recommended for for spider to voice coil, spider to frame , cone to coil, surround to basket and some dust caps. Also used for hobby RC car tires, woodturning inlays, burl, and spalted wood. heavy duty bonding, and filling voids.It is important to keep in mind that black rubber toughened CA glues have an extended bonding time due to the added rubber compound. It can take as much as 24 hours to fully cure when larger volumes of the adhesive is applied. For these instances, use of accelerator is highly recommended.When well kept, our product can last a longer shelf life when stored in a cold environment. Just make sure to store the bottle under 40°F before and after use.Viscosity rating is 2400 CPSPlease be advised that the higher the CPS of the glue is the shorter the shelf life is on the glue.If you don't plan on using the glue within 1-2 weeks after receiving it, we recommend that you to store in the refrigerator.