Product Data Sheet
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One-Component, Polysulfide, Gun-Grade, Low Modulus Joint Sealant
POLY-JET LOX is a single-component, polysulfide, gun-grade, low modulus joint sealant. It cures on exposure to moisture to form an effective joint sealant. POLY-JET LOX is formulated to bond to damp or dry Portland cement concrete joints and cracks.
POLY-JET LOX is specifically formulated to meet the requirements of the liquid oxygen test of the U.S. Air Force and is recommended for use in areas that are exposed to liquid oxygen.
POLY-JET LOX is not compatible with asphalt and cannot be used in asphaltic concrete pavement or with asphalt-impregnated expansion joint fillers.
With its non-sag consistency, POLY-JET LOX can be used on vertical and overhead installations as is, or it can also be used horizontally if tooled immediately after installation. Primer is not required when POLY-JET LOX is applied in concrete joints.
11 Oz. (325.3 mL) Cartridges (12 per Case)
5 Gallon (18.9 L) Pails
The chart below shows the approximate number of lineal feet that can be sealed with an 11 oz. cartridge (1/2″ x 1/2″ joint size = 84 lineal ft./gal.)
|WIDTH OF JOINT|
|DEPTH OF JOINT||1/4″||1/2″||5/8″||3/4″||1″|
When stored indoors in original, unopened containers at temperatures between 40° – 90° F (4° – 32° C), optimum performance and best use is obtained within six months of date of manufacture.
- TT-S-230, Type II, Non-Sag
- CRD-C-506, Type II, Class B
- ASTM C920, Type S, Grade NS, Class 25, Use NT, O
|TEST METHOD||TYPICAL VALUES|
|Sealant Consistency:||ASTM C639||Non-Sag|
@ 77° F (25° C)
|ASTM D2393||1,000,000 – 1,300,000|
|Tack-Free Time:||ASTM C679||12 hours|
|Specific Gravity:||ASTM D1475||1.5 – 1.56|
|Durometer Shore A*:||ASTM D2240||40 ± 5|
|Resiliency % **:||ASTM D3583||80 min.|
|Modulus @ 150%,
psi Die C*:
|ASTM D412||100 max.|
|Elongation %, Die C*||ASTM D412||200 min.|
|Bond to Concrete
@ -20° F 50% extension:
(1/2″ x 1/2″ x 2″ specimen)*
Federal Spec. SS-S-200E
|Pass 3 Cycles
Pass 3 Cycles
Pass 3 Cycles
|Change in weight %**:||ASTM D3583||1.5 max|
|Change in volume %**:||Federal Spec.
2 min. @ 500° F
|Tensile Adhesion, %**:
1/2″ x 1/2″ x 2″ specimen
|ASTM D3583||200 min.|
LOX Impact Test @ Ambient
Temp. 7.2 foot pounds
|* Sample cured 21 days @ 73±5° F and 50±5% relative humidity
** W. R. MEADOWS sample preparation
POLY-JET LOX may be applied by manual or air-operated caulking guns, putty knife, or trowel. POLY-JET LOX adheres well to unprimed concrete; however, REZI-WELD LV from W. R. MEADOWS is recommended for optimum adhesion.
Joint Preparation … Joints should be clean and free from dirt, oil, grease, wax, loose materials, etc. For joints ½” – 1″ (12.7 – 25.4 mm), the sealant depth should be half of the joint width. For joints less than ½” (12.7 mm), sealant depth should be ¼” (6.4 mm). Deep joints should be filled to the proper depth with KOOL-ROD™ backer rod from W. R. MEADOWS. POLY-JET LOX is not recommended for joints over 1″ (25.4 mm) in width because of the longer curing time required. POLY-JET LOX is a non-sag consistency and will require tooling for horizontal applications.
For completely clean installations, apply masking tape 2″ (50.8 mm) wide to the surface adjoining the joint before POLY-JET LOX is applied; remove the tape before the sealant starts to set. POLY-JET LOX may be applied to slightly damp surfaces; this precludes the necessity to wait for early morning dew to completely evaporate. Under normal conditions [70° F (21.1° C) and 50% relative humidity), a skin will form on the sealant in approximately 12 hours. To speed the formation of surface skin, the sealant in the joint may be tooled with water, which results in a skin forming in about 30 minutes.
Time required for complete curing of the sealant depends upon the size of the joint, temperature, and humidity. High temperatures and high humidity promote rapid curing. Conversely, at low temperatures and low humidity, a longer time will be required to develop the optimum qualities of the sealant. In exposed applications with moderate temperature and humidity, a 1/4″ (6.4 mm) thickness of sealant on a non-porous material will cure full-depth within two weeks. If the sealant is applied where moisture may penetrate from two or more directions, curing will proceed more rapidly.
The odor emitted by POLY-JET LOX may be objectionable during the installation and curing phases of construction. Adequate ventilation of the work area may be required. POLY-JET LOX is a moisture-curing material. All surfaces to be sealed must be completely clean and free of any contamination, such as curing or waterproofing compounds, laitance, etc. POLY-JET LOX adheres tenaciously without use of a primer to concrete. POLY-JET LOX is not compatible with bituminous materials.
May help contribute to LEED credits:
- MRc9: Construction and Demolition Waste Management
- EQc2: Low-Emitting Materials [For Healthcare and Schools (exterior-applied products) ONLY]