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FX-570 Polymeric Joint Sealants

Download PDF of FX-570 / updated 5/13/2013

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FX-570

DESCRIPTION:

FX-570/FX-571 Polymeric Joint Sealants are 2 part polysulphide chemically cured elastomers. They provide a flexible and watertight seal between concrete, masonry, metals, glass, wood, and other construction materials. FX-570 (Gun Grade)/FX-571 (Pourable) are mixed just prior to application. Color is light gray. (Other colors are available on special order.)

ADVANTAGES:

FX-570/FX-571 bond tightly to any clean, dry surface. The cured sealant has excellent flexibility and performs well to -20°F. Joint movement ą 25% is easily accommodated through years of outdoor exposure. FX-570/FX-571 resist the effects of temperature extremes, seasonal weather changes, sunlight, moisture and chemical attack. Life expectancy is up to 20 years under normal conditions.

PHYSICAL PROPERTIES:

FX-570/FX-571 have excellent electrical properties. Typical electrical properties of cured material at 77°F (25°C) and 50% relative humidity are as follows:

Tensile Strength	85 psi
Tensile Elongation	350%
Hardness, Shore A Durometer	25
Volume resistivity (ohm * cm)	1 x 10¹¹ - 7 x 10¹²
Surface resistivity (ohms)	1 x 10¹² - 2 x 10¹⁴
Dielectric constant @ 1 kc	5.5 - 8
Dissipation factor @ 1 kc	.001 - .010
Pot life after mixing is approximately 40 minutes at 70°F (21.1C).
Initial cure is 24 hours; final cure is 7 days.

SPECIFICATION:

FX-570/FX-571 Polymeric Joint Sealants meet the following specifications:

	Type	Grade	Class
ASTM C-920-95	FX-570 M	NS	25
ASTM C-920-95	FX-571 M	P	25

National Bureau of Standards and GSA TT-S-0227E (1970)*
*Defers test specification to ASTM C-920-95

SURFACE PREPARATION:

Joint interface must be clean, dry, and free from oils, loose mortar, laitance, waterproofings, and other contaminants. A thorough grinding, sandblasting, or solvent cleaning may be required to expose clean, sound surfaces. Priming is not normally required with common building materials. However, an instance may occur where priming is necessary for certain substrates or for water immersion, and FX-Sealant Primer should be used. The FX-570/571 must be applied within 8 hours after priming. Re-prime if time limit has expired.

MIXING:

Mix "A" and "B" Components with a slow speed mechanical mixer for 3 minutes. Use FX-570 with caulking gun or mechanical equipment. FX-571 may be poured into joint from container or from watering can. For large projects, mechanical placing equipment may be utilized.

APPLICATION:

Apply immediately after mixing into properly sized joints. Backer Rod may be required.

SHELF LIFE:

One (1) year

COVERAGE:

Estimated Coverage Rates (Lineal Ft./Gal.)

WIDTH INCHES

D
E
P
T
H

I
N
C
H
E
S

	1/4"	3/8"	1/2"	3/4"	1"
1/4"	308	205	154	102	77
3/8"	205	136	102	68	51
1/2"	154	102	77	51	38
3/4"	102	68	51	34	26
1"	77	51	38	26	19

LINEAL FT./GAL.

LIMITATIONS:

Do not install in damp or wet joints. Temperature should be above 40°F (4.4C) at time of application to assure proper curing.

CAUTION:

Repeated or prolonged contact with skin should be avoided; protective gloves should be worn as a precaution. Avoid contact with eyes; in case of eye contact, flush with water for 15 minutes and consult a physician.

FOR INDUSTRIAL USE ONLY. KEEP AWAY FROM CHILDREN. UPDATED 5/13/2013