TYPICAL PROPERTIES

UncuredFlow sag or slump....................................................NIL

Skin time............................................................. 50-60 minutes

Cured

Durometer Shore A Hardness ............................... 30±5 points

Specific Gravity ....................................................................1.53

Tensile Strength...............................................................165 PSI

Elongation........................................................................>800%

Modulus..............................................................................85 PSI

Shrinkage ................................................................................NIL

Service Temperature............................................-22°F to 194°F

Application Temperature ....................................... 41°F to 86°F

LIMITATIONS• Does not adhere to glass, PE, PP, or PTFE. It is the sole responsibility of the user to test the adhesion to the substrate for suitability.

• Do not apply in the presence of uncured silicone sealants, alcohol, or other solvent cleaners.

• Contact with bitumen, tar, or other plasticizer releasing materials such as EPDM, neoprene, butyl, etc., is to be avoided since it can give rise to discoloration and loss of adhesion.

CAUTION

DIRECT CONTACT OF UNCURED SEALANT IRRITATES EYES AND MAY IRRITATE SKIN. OVEREXPOSURETO VAPOR MAY IRRITATE EYES, NOSE AND THROAT. Avoid eye and skin contact. Use only outdoors or in a well ventilated area. Do not handle contact lenses with sealant on hands. IN CASE OF EYE CONTACT, flush eyes with water for 15 minutes. Obtain medical attention. IN CASE OF SKIN CONTACT, remove from skin and flush with water. KEEP OUT OF THE REACH OF CHILDREN. For safe handling information on this product, consult the Safety Data Sheet (SDS).

BOSS 535 Polyurethane Sealant conforms to the requirements of LEED. Low-emitting materials: Adhesives and Sealants. SCAQMD rule 1168. Complies with USGBC LEED2009 4.1: Low-Emitting Materials -- Adhesives and Sealants concerning the VOC Content. BOSS 535 Polyurethane Sealant also meets ASTM C920 Class 35, TT-S-00230C, and CAN/CGSB 19.13-M87.APPLICATIONSBOSS 535 Polyurethane Sealant is designed to produce a flexible joint sealant with excellent adhesion to various substrates.

BOSS 535 is suited to all building joints with high movement, including construction joints between window frames, door frames, and walls. It is formatted for joints with large movement, but can also seal shrinking joints in concrete floors, as well as other floor joints. BOSS 535 Polyurethane Sealant has excellent adhesion to many building materials including Kynar 500, coated metals, glass, EIFS, galvanized steel, residential/commercial roofing, flashings, vents, downspouts, gutters, tiles, concrete and wood.

HOW TO USE Make sure the joint design is correct. Proper joint design minimizes stresses on the sealant. The minimum width for joints is 3/16” and the maximum width is 1 3/16.”The minimum depth of joints is 3/16.” The recommended joint width is 2 x the depth. Clean the joint surface on both new and old jobs. Surfaces must be clean, dry, and sound. Since new material is often covered with a protective film, solvent-wash all surface materials with a wet brush and an oil-free solvent. Ensure that surfaces are dust free. Use masking tape where bead lines of exact shapes are required. Masking tape should be removed immediately after a bead is completed before a skin begins to form. Apply sealant to dry, clean surfaces. A manual- or pneumatic caulking gun may be used. Surfaces should be dry before the sealant is applied. Ensure that surfaces to receive the sealant are dust free. Uncured sealant may be cleaned from tools using commercial solvent. Tool joint, if necessary, and remove masking tape. Tooling should be completed in one continuous stroke. Tool immediately after sealant is applied and before a skin begins to form. Do not use soap or oil as a tool aid. Remove masking tape immediately after tooling is completed. CLEAN UP Before curing, use White Spirit or Soudal Surface Cleaner immediately after use.

COLORSBOSS 535 is available in white and concrete gray. PACKAGINGBOSS 535 Multi-Seal® is available in standard caulking cartridges. SHIPPING LIMITATIONS None. Reactive VOC 10 g/l (<1% wt) (Colors)Reactive VOC 29 g/l (<3% wt) (Translucent)

STORAGE AND SHELF LIFE

When stored in the original unopened containers, in a cool dry place, between41°F and 77°F, BOSS® 535 Polyurethane Sealant has a shelf life of 15 months from date of shipment. In countries where high heat and humidity are a factor, special precautions must be taken. Store product in a covered, well-ventilated warehouse and avoid excessive heat conditions. Storage in high heat, high humidity conditions may reduce shelf life by up to 30%. Rotation of stock is an absolute necessity. Cartons should always be stacked upright with the nozzle tip pointed upwards. DO NOT stack cartons on their side. NEVER stack cartons more than 8 high. DO NOT store within 1 meter (4 feet) of roofline of the warehouse or storage building.