Product Specifications

Viscosity: Flash Point: Density (lb/gal): Solid (% by weight): Solid (% by volume): Shelf Life (months):

Zahn #2 signature cup 18 sec at 77°F

-4° F (-20°C) 7.3 24% 17% 6

Product Description

Optiseal 550 is a one-component high solids pre-catalyzed Reactive Amino Coating (RAC) sealer that provides excellent sealing properties and very rapid dry.  Optiseal 550 is an easy sanding sealer designed for the professional applicator that requires a rapid dry and an easy sanding material. Labor saving through the elimination of a coating step or two is generally realized due to the high solids in the product.  Optiseal 550 may be catalyzed to further enhance its durability.

Recommended:  Architectural Woodwork Institute Precatalyzed Lacquer System (8th Ed).

Uses

Optiseal 550 is recommended for office and household furniture, kitchen cabinets, as well as many other interior wood applications.

Environmental Data (as supplied)

VOC less exempt lb/gal: VOC lb/gal: VOC less exempt g/l: VOC g/l: VOC lb/lb Solid: VHAPs lb/lb Solid:
<4.58 <2.30 <550 <275 <1.3 <0.02

Note:

N/A

Application Data

Suggested Uses: Mixing Ratio: Pot Life: Application Viscosity: Reducer: Retarder: Clean-up Solvent: Recommended Wet Film: Coverage:

Wood Finish

100 parts 431-1961 to 1 part 873-1205

8 hours (catalyzed)

Zahn #2 signature cup 18 seconds

800-5500 800-5328 800-5500 3 – 5 mils

Coverage is 250 sq. ft/gal at 1 mil dry and at 100% transfer efficiency. Coverage will vary depending on method of application or coating thickness.

Note:

N/A

Surface Preparation

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 550 cannot be used on metal, old oil or cellulose lacquers. Stain systems used under acid catalyzed systems should be acid stable. Optiseal 550 may be topcoated with pre-catalyzed RAC topcoats such as Opticlear 550 topcoat 431 85XX. AkzoNobel recommends using 825-00XX or 825-09XX series stains or 824-50XX series waterborne stains.

General Information

Agitate material before use.  Optiseal 550 must be agitated thoroughly at all times to ensure product consistency and consistent gloss.  Always mix Optiseal 550 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 550 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.

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.

Optiseal 550 must not be polluted with oil, varnish or the like and must not be sanded with steel wool between the coats.  Optiseal 550 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.

THE CUSTOMER IS RESPONSIBLE FOR FOLLOWING THE RECOMMENDED APPLICATION PROCEDURES. FAILURE TO ADHERE TO THE RECOMMENDATIONS GIVEN IN THIS DATA SHEET WILL LIKELY RESULT IN UNSATISFACTORY FILM APPEARANCE OR FILM FAILURE. THE COMPLETE COATING SYSTEM SHOULD BE CHECKED FOR REQUIRED PROPERTIES PRIOR TO THE START-UP OF PRODUCTION.

Drying Times

Room Temperature (68°F)

Tack Free Time: Dry to Sand: Dry to Stack:
20 minutes 1 – 1.5 hours 2 - 3 hours

Forced Drying Schedule (122°F)

Tack Free Time: Dry to Sand: Dry to Stack:
Flash off before entering oven 30 – 45 minutes 60 – 90 minutes

Note:

N/A


Dry times are greatly affected by film build, porosity of substrate, air movement as well as heat and humidity. Temperatures are based on actual board temperature. This may vary depending on length of time for boards to reach these temperatures. Minimum curing temperatures of 64°F/18°C must be maintained throughout the curing cycle to achieve the film integrity as stated in product features.

These products are designed for industrial use only. AkzoNobel views safety as a top priority. Please refer to Material Safety Data Sheet for information on the safe use of this product.

Values shown are calculated estimates and should not be construed as product specifications. We cannot anticipate all conditions under which this information and our products or the products of other manufacturers in combination with our products may be used. We accept no responsibility for results obtained by the application of this information or the safety and suitability of each such product or product combination for their own purposes. Unless otherwise agreed in writing, we sell the products without warranty, and users assume all responsibility and liability for loss or damage arising from the use of our products whether used alone or a combination with other products. Use of unapproved or reclaimed solvent blends may reduce film properties and is not recommended.