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Home > KBS Direction Pages > XTC Primer Directions

XTC Primer Directions

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KBS RustSeal - Stop Rust

XTC FAQ‘s


XTC on the KBS Tech Support Forum


Buy XTC Primer

To achieve expert results, please take the time to carefully read and understand the following directions before you begin your restoration project. These directions are meant to be general guidelines only and do not cover every application or environmental situation. If you have remaining questions or concerns, please call us toll-free for technical assistance.

ALWAYS WEAR PROTECTIVE GLOVES AND SAFETY GLASSES. ALWAYS WORK IN A WELL-VENTILATED AREA. Please heed all labeled warning and caution notices on all products.

Description:

XTC Silicon Zinc Primer is a high temperature, corrosion resistant primer formulated from silicone resins and zinc dust. XTC Primer provides outstanding corrosion protection for metal surfaces operating at temperatures from 500°F (260°C) to 1000°F (538°C),with peaks to 1200°F (649°C).

XTC Primer Primer is a two-package system consisting of a base component and zinc that are mixed together before use. XTC and XTC Primer have excellent intercoat adhesion and are able to withstand severe thermal shock throughout the entire temperature range.

Surface Preparation:

To ensure optimum long-term coating system performance, surfaces must be clean, dry and free from dirt, oil, grease, salts, welding flux, mill scale, rust, oxides, old paint, corrosion products or other foreign matter.

Remove all surface imperfections that will induce premature coating system failure. Chip or scrape off weld splatter. Grind down sharp and rough edges.

Abrasive blast surface per specification SSPC-SP 10, “Near-White Blast Cleaning”, or per NACE Standard No. 2 to a profile depth of 1.5 - 2.0 mils maximum, with a 1.5 mil anchor pattern being ideal. Abrasive used in blasting should be selected carefully from materials of mesh size required to produce the desired anchor pattern.

If abrasive blasting is not permitted, prepare surface by power tool cleaning per SSPC-SP 11. Use 3M brand “Heavy Duty Roto Peen”, type C flap wheel cleaning system mounted on an air-driven motor. This method will provide a surface equivalent to that provided by commercial blast cleaning per SSPC-SP 6, including the desired surface profile.

Feather out all edges of adjacent painted surfaces after completion of surface preparation operations and prior to application of the first coat of paint.

Application Guidelines:

NOTE: Before applying observe safety precautions. Extinguish fires, flames and hot coals. DO NOT SMOKE. Turn off pilot lights, stoves, heaters, electric motors, and other sources of ignition during use and until vapors are gone. Make certain surfaces and contents of item to be painted have completely cooled down. Do not apply unless surface temperature is between 60-80° F (16-27°C).

Surface temperature must be at least 5°F (3°C) above dew point.

Aerosol Spary Can Application:

Shake can vigorously for one minute after mixing ball rattles freely to ensure proper mixing and to prevent sprayhead from clogging. Repeat shaking frequently during use. Hold can 12-15 inches from surface and apply using steady, even strokes. Apply two light coats, allowing 15 minutes drying time between coats. Clean sprayhead immediately after use by turning can upside down and spraying until no more paint appears. If clogging occurs, remove sprayhead and clean with a fine wire. Replace carefully, pointing can and sprayhead away from you. Allow primed surface to dry a minimum of 30 minutes before top coating with the KBS Xtreme Temperature Coating or KBS Motor Coater color of your choice.

Mixing:

XTC Primer Primer is a two-package system consisting of a base component and zinc that are mixed together before use. Sift zinc dust slowly into base with continuous mechanical agitation. Mix thoroughly until free of lumps. Pour mixture through 30-mesh screen. If a partial unit is needed, mix by weight 10 parts of the Base component with 3 parts Zinc Dust component. Do not open containers until ready to use. Re-disperse any settled-out pigments by stirring with a paint paddle or power mixer to a uniform consistency. Keep lid on container when not in use.

Application Equipment:

Conventional spray is the recommended method of application. However, XTC Primer may also be applied by airless spray, brush or roller. Do not apply XTC Primer in heavier films than specified since blistering may occur.

Brush:

Use only wooden-handled brush with short China bristles. Do not use synthetic-bristled brushes. Do not flood surface with coating. Brush out thoroughly, maintaining a continuous wet edge and uniform appearing paint film.

Roller:

Use only wooden-handled roller with phenolic shank and core, and 1/4-3/8” nap. Do not flood surface with coating. Roll out excess coating on a suitable, screened surface. Then roll out thoroughly, maintaining a continuous wet edge and uniform appearing paint film.

Thinning

Only thin XTC Primer with KBS #1 Thinner.

Note: Use of other thinners not approved by may hinder product performance.

Dry Time 70° (21°) 50% RH:

XTC Primer will air dry tack and thumb print free within 1/2-1 hour. Allow 8 hours dry time between coats. Allow 24 hours dry time prior to shipping and handling if coating is not heat cured. Surfaces coated with XTC Primer in the air dried state can be handled and shipped prior to a heat cure as long as shipping and handling procedures for thin filmed systems are followed.

Avoid mechanical abrasion during shipping and handling. Higher temperatures will reduce tack free, recoat and shipping times. Allow one hour solvent flash off period before heat curing or placing into service. Optimum film properties require a heat cure of 350°F (177°C) for 30 minutes. Equipment protected with the XTC Primer in the air dried state will heat cure when placed into service.

Clean Up:

Thoroughly flush spray equipment and hoses immediately after use with KBS #1 Thinner or lacquer thinner. Dismantle spray equipment and clean parts, brushes and rollers with KBS #1 Thinner or lacquer thinner.

Storage:

Store in a cool, dry place with temperatures between 50°F and 100°F (10°C and 38°C). Keep container closed when not in use.

Technical Data:

Characteristics XTC Silicon Zinc Primer
Generic Type Silicone Zinc Dust
Color Dark Grey
Temperature Resistance
Continuous
Intermittent

1000°F (538°C)
1200°F (648°C)
Percent Solids by Volume 33
Dry film thickness per coat 1.5 - 2.0 mils (37 - 50 microns)
Wet film thickness per coat 4.5 - 6.0 mils (112 - 150 microns)
Theoretical coverage 530 mil. sq. ft. (12.65 sq. m./liter @ 25 microns)
Drying time @ 50% RH
To Touch
To Recoat
To Ship
50°F (10°C)    70°F (21°C)
1 hour    30 minutes
12 hours    8 hours
48 hours    24 hours
Full cure @ 350°F (176°C)* 30 minutes
Weight per gallon 12.0 lb. (5.5 kg.)
Flash Point 45°F (7°C)
Pot life N/A
Shelf life 1 year
Volatile organic compounds 4.9 lb./gal. (583 g./l.)

*See Dry Time Section

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