PSI-601TDS(7000-0808)
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PSI-601 and PSI-601 FG Food Grade Acetoxy Silicone Sealant Product description PSI-601 is a one-part, RTV silicone sealant that cures by atmospheric moisture to a durable, flexible rubber with excellent adhesion to most non-porous surfaces, including glass, metal, ceramic, porcelain, rubber and some plastics. PSI-601 may be factory or field applied to form a long-lasting seal resistant to the effects of rain, snow, ultraviolet radiation, ozone, sunlight and temperature extremes. Basic uses PSI-601’s excellent adhesion to non-porous substrates makes it extremely useful for butt and lap shear joints; curtain wall joints; glass block and glass partitions; non-structural glazing; cap, head and toe bead in conventional glazing; skylights and mullions; perimeter caulking of metal and most plastic frames; solar panels, duct work, vents and air conditioning units. Benefits • Highly flexible over a wide temperature range. • UV and ozone-resistant. • Excellent adhesion and superior durability on most non-porous surfaces. • Capable of compensating for joint movement of ±25% of the original joint geometry. • Contains no solvents; low VOCs (37 gms/L) Application limitations • Not for use in structural or butt glazing, nor in expansion joints less than 1/4” in width or depth. • Should not be applied to areas totally confined during cure as atmospheric moisture triggers the sealant’s reactive curing mechanism. • Must be fully cured before exposure to temperatures above 217°F (103°C). • Not recommended for application to materials that might bleed oils or solvents. • Evolves acetic acid during cure; should not be applied to concrete, marble, limestone, lead or lead-coated surfaces, zinc coated metal (galvanized) or copper. • Not recommended for applications that will be painted or surfaces with reflective or protective coatings without prior testing. • Not recommended for submerged joints on porous surfaces or for fuel immersion. Color Clear, White, Black, Aluminum and Yellow. Custom colors available; minimum order 100 gallons. Packaging Available in 10.3 fl. oz. (305 ml) polyethylene cartridges, 12 cartridges per carton. Also available in 2-gallon pails, 5-gallon pails and 55-gallon drums on special order. Applicable standards Both PSI-601 and PSI-601 FG comply with MIL-A-46106. PSI-601 FG (colors Aluminum, Black, White and Clear) complies with FDA 177.2600. PSI-601 FG is also certified by National Sanitation Foundation International (NSF) to Standard 51. Installation Joint design: The width of the bead should be a minimum of 4 times the calculated movement. A thin bead of sealant will accommodate more movement than a thick bead. PSI-601 should be installed no thicker than 1/2” and no thinner than 1/4”. Ideally, the ratio of the joint width to depth should be 2:1 with the depth never exceeding 1/2”. Closed cell polyethylene or polyurethane foam backer rod is recommended to control the depth in deep joint installations. Bond breaker tape is recommended for joints too shallow for backer rod insertion. These materials permit the application of a thin bead while providing a non-stick surface, precluding a three-sided joint. Glazing rabbets and joints should be designed to allow insertion

and retention of these bond-breaking materials during application and curing of the sealant. Surface preparation: Clean all joints and glazing areas of foreign matter and contaminants such as moisture, frost, dirt, dust, oil, grease, protective coatings, previously applied sealants Priming: PSI-601 adheres strongly to glass and ceramic surfaces and many common metals. For stronger, more uniform bonds, primers are To determine if a primer is required, apply a thin bead of sealant to the substrate, let fully cure and then pull up one end of the bead. For non- porous substrates PSI-690 Primer...

Health precautions • During application and cure, product forms and releases acetic acid, a skin, eye and respiratorytract irritant. Avoid inhalation of vapors. Use only in well-ventilated areas. For exposure limits, see MSDS. If affected, remove to fresh air. • Avoid skin and eye contact. Wear protective gloves and eye protection. • Remove contact lenses before using product. After use, do not handle contact lenses until all product is cleaned from fingertips, nails, and cuticles. Residual product can remain on fingers for several days, transfer to contact lenses, and cause eye irritation....