O'Brill Company

Construction Specialty Suppliers

       6626 N. Milwaukee Ave.

Niles, IL 60714

773-775-1122 or 847-647-0005

FAX 847-647-7819

Since 1967

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Sealtight CR-90

 

 

 

NO. 02575-15R

SEALTIGHT® CR-90

CRACK FILLER

Technical Description
SEALTIGHT CR-90 Crack Filler is an economical, single-component, hot-applied sealant for use in sealing cracks and joints in asphalt and Portland Cement concrete pavements. It is composed of a blend of asphalt, granulated tire rubber, virgin polymers and inert fillers.

Specification
ASTM D 5078-90

PHYSICAL PROPERTIES
TEST ASTM D 5078
Penetration, 200g, 60 sec.
39.2 ±0.2F,dmm
Penetration, dmm (ASTM D 3407)
Resilience, % (ASTM D 3407)
Flow, cm (ASTM D 3407)
Ductility, cm (ASTM D 113)
Softening point, ºF (ASTM D 36)
Tensile adhesion, % (ASTM D 3583)
Asphalt compatibility (ASTM D 3407)
Bitumen content, % (ASTM D 4)
Flexibility @ 30ºF
Wt. per gallon, lbs.
Viscosity, CPS (380ºF) (ASTM D 3236)		 RESULTS

30
42
50
0.1
33
205
500+
Pass
60+
Pass
9.8
5,000		 SPEC. LIMITS

15 min.
70 max.
30 min.
–
–
150 min.
–
–
–

Recommended pouring temperature: 380ºF
Maximum safe heating temperature: 400ºF
*Typical results should not be used as specification limits.

Application
This material is quite thick at applicating temperatures. An oil-jacketed melter-applicator equipped with a pump and wand is needed to apply this product. The melter should also be equipped with an agitator and separate, properly functioning temperature gauges for the oil bath and melting vat. Material may be added as sealant is drawn off. Small amounts of material remaining in the kettle may be reheated.

bulletAir and surface temperatures should be above 40ºF when sealing.
bulletCracks and joints should be free of dirt, dust, moisture and be frost-free. They should be cleaned by wire brushing or compressed air and a heat lance may be used to dry the interfaces.
bulletA minimum 3/8" width is needed for proper installation of this material. A carbide-tipped router or saw should be used to obtain this minimum width.
bulletFill cracks from the bottom up. Recommended procedure for asphalt pavement is to overfill and then wipe with a U-shaped squeegee to form a thin overband (1/8" maximum thickness) 3" to 5" wide. Flush fill in Portland Cement concrete pavement.

Packaging
50 lb. cartons containing two 25 lb. blocks in poly liners.

Precautions
Do not heat material over 400ºF or polymer degradation may occur. Prolonged heating over 6 hours without the addition of fresh material is not recommended.



W. R. MEADOWS, INC. warrants that, at the time and place we make shipment, our materials will be of good quality and will conform with our published specifications in force on the date of acceptance of the order. THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY, EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES OTHERWISE ARISING BY OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR OTHERWISE. As the exclusive remedy for breach of this Warranty, we will replace defective materials, provided, however, that the buyer examine the materials when received and promptly notify us in writing of any defect before the materials are used or incorporated into a structure. Three (3) months after W. R. MEADOWS, INC. has shipped the materials, all our Warranty and other duties with respect to the quality of the materials delivered shall conclusively be presumed to have been satisfied, all liability therefore terminates, and no action for breach of any such duties may thereafter be commenced. W. R. MEADOWS, INC. shall in no event be liable for consequential damages. Unless otherwise agreed to in writing, no warranty is made with respect to materials not manufactured by W. R. MEADOWS, INC. We cannot warranty or in any way guarantee any particular method of use or application of the performance of materials under any particular condition. Neither this Warranty nor our liability may be extended or amended by our salesmen, distributors or representatives, or by our distributor's representatives, or by any sales information or drawings.

 

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Copyright © 2002 O'Brill Company
Last modified: August 09, 2004