546-5900 Optiseal 275 Pre-Cat Clear Sealer

Optiseal 275 is recommended for office and household furniture, kitchen cabinets, as well as many other interior wood applications.

Substrate must be sanded using 120, 150 or 180 grit stearated paper prior to staining or coating. The sealer should be sanded and the next coat applied within eight hours of being sanded. Optiseal 275 cannot be used on metal, old oil or cellulose lacquers. Stain systems used under acid catalyzed systems should be acid stable. Optiseal 275 may be topcoated with pre-catalyzed RAC topcoats such as Opticlear 275 topcoat 431 39XX or E-Var 275 421-84XX (546-5900 must be catalyzed prior to use).  AkzoNobel recommends using 825-39XX series stains or 824-50XX series waterborne stains.

Agitate material before use. Optiseal 275 must be agitated thoroughly at all times to ensure product consistency. Always mix Optiseal 275 while adding hardener and reducers in the recommended mixing ratios.

Apply at 3-5 mils wet on sanded substrate. Further coats may be applied after complete drying followed by sanding with 280/320 grit stearated paper. The second and subsequent coats must be applied the same day as the previous coat is sanded.

Maximum film build of Optiseal 275 should not exceed 2 mils dry. Maximum film build of total coating system must not exceed 3 mils dry. Contact with metal surfaces should be avoided.

Optiseal 275 may be catalyzed to further enhance its durability. Optiseal 275 must not be polluted with oil, varnish or the like and must not be sanded with steel wool between the coats. Optiseal 275 must not be used and dried at temperatures below 64°F or relative humidity above 65%. During hardening the coating must not be exposed to ammonia vapors. Ammonia cleaners should not be used for cleaning the finished surface. This may accelerate discoloration.

Natural ambering or discoloring in the can may occur over time. Although there may be changes of color in the can as the product ages, this will have little to no effect on the product during application. Storing in locations above recommended room temperatures could accelerate ambering.

Please note that, as with any other pre-catalyzed product, this material contains, and has the potential to emit, formaldehyde (CAS# 50-00-0). As per the US Department of Labor Standard 29 CFR 1910.1048 covering formaldehyde, section (d)(1)(i) states that “Each employer who has a workplace covered by this standard shall monitor employees to determine their exposure to formaldehyde.” Please refer to the OSHA web site at www.osha.gov for further information.