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Kester 53-4001-0527 - TC-527 Hi-Temp Flexible Solder Mask 1 Pint
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Kester 53-4001-0527 is TC-527 Hi-Temp Flexible Solder Mask. It is a pink, high-temperature flexible solder masking compound formulated of natural latex rubber to protect delicate components.
The latex is heat stable and tacky enough to be applied to those areas of circuit boards that require masking during a wave soldering process. Can be applied by automatic dip, brush or flow methods, direct from applicator bottle or by automated dispensing machines. It can easily be peeled away without leaving a residue. This item comes in a 1 pt squeezable bottle.
Will not tarnish gold or phosphor bronze
Protects delicate components
Viscosity (typical): 11,500 cps
Brookfield viscometer @ 20rpm and 25ºC
Parts to be protected must be free from oil, grease and silicones to ensure proper adhesion. Kester TC-527 can be thinned with water and uncured mask left on equipment can be removed with water. A 15-mil thick coat of Kester TC-527 will cure in approximately 45 minutes at room temperature or 15 to 20 minutes at 66ºC (150ºF). Warming the surfaces prior to application will expedite cure. High relative humidity or greater coating thickness will necessitate longer cure times. Kester TC-527 may be exposed to oven temperatures of 82ºC (180ºF) and lower for up to 16 hours without degradation. At temperatuers of 82-120ºC (180-250ºF) exposure time should be limited to two hours, at 120-149ºC (250-300ºF), 30 minutes. Exceeding these exposure times will cause Kester TC-527 to soften and lose elasticity. Exposure of TC-527 to oven temperatures above 149ºC (300ºF) is not recommended.
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