Sauereisen Inc.

- Model No. 69 - Elastomeric Joint Compound



Sauereisen Elastomeric Joint Compound No. 69 is used as a flexible expansion joint in acid pickling tanks; in concrete, brick and tile floors; for sealing joints of ducts and conduits; and for general caulking and sealing where permanent flexibility and adhesion are required, along with resistance to mineral acids and alkalies. No. 69 is not resistant to oils, kerosene or petroleum solvents.

  • Color: Black
  • Flash point: >250°F (121°C)
  • Gel time, 75oF: (24°C) 45 - 70 min
  • Service temperature range: -40oF to 250oF (-40°C to 121°C)
  • Viscosity, 75oF: (24°C), Brookfield- Component A 150 - 250 cps
  • Component B: 7,500 - 15,000 cps
  • Vol. coef. thermal expansion: 13.0 x 10-4cm3/°C/cm3
  • Weight per gallon: Component A 8.5 lbs (3.8 kgs)
  • Component B 7.4 lbs (3.3 kgs)

Physical properties were determined on specimens prepared under laboratory conditions using applicable ASTM procedures. Actual field conditions may vary and yield different results; therefore, data are subject to reasonable deviation. Data should not be used for specification purposes.

  • Forms an impervious, flexible solid.
  • Nonshrinking.
  • Resists water, moisture, alkalies and most corrosive acids.
  • For use within temperature range of -40t250oF.
  • Excellent adhesion tconcrete, brick, granite, glass, styrene copolymers and metals.

Temperature of Working Area

Maintain a temperature of 60o - 90oF on air, substrate, ConoWeld No. 501 Primer and Elastomeric Joint Compound No. 69 during mixing, application and cure.

Surface Preparation

Substrate must be free of laitance, oil, grease and other contaminants that may inhibit the bond of the No. 501/69 system by chemical cleaning. All surfaces must be dry, firm and structurally sound as specified by the architect/engineer. Any loose particles of dust, dirt and foreign matter should be removed by brushing or vacuuming.


ConoWeld Primer No. 501

  • Thoroughly remix before applying.

Elastomeric Joint Compound No. 69

No. 69 is supplied in two parts - Component A and Component B - which are packaged together in one carton. Thoroughly remix each component prior to use. Empty contents of Component A into Component B and mix thoroughly for a minimum of five minutes with a slowspeed “Jiffy” type mixer. Avoid entraining air into the mixture. Mix only complete units - do not mix partial batches.


ConoWeld 501 Primer

Apply primer to concrete or steel using either a short nap adhesive roller with a nondegradable core, or a nylon bristle brush. For horizontal applications, pour primer onto the surface and spread with a squeegee before backrolling or brushing.

ConoWeld may also be sprayed using airless spray equipment. Typical application thickness is 5-10 mils. Consult Sauereisen for specific details.

Elastomeric Joint Compound 69

Once Primer 501 has dried to a tackfree condition, the 69 may be applied. A bond breaker should be installed in the bottom of the joint prior to pouring 69. Polyethylene foam backer rods that are approximately 50% wider than the width of the joint should be forced to the bottom of the open joint for this purpose.

The width of the 69 in the joint should be maintained at approximately twice of the joint depth (W = 2 x D) to accommodate for greater extension and to minimize the possibility of tearing.

For applications where joints are very deep, additional layers of backer rods should be used.

For vertical applications, tape the open joint and then pour the 69 behind the tape. Do not attempt to pour the 69 more than 12 inches behind the tape. As the application moves up the wall, the procedure is repeated; applying tape and then pouring behind the tape.

The tape is left in place until the 69 is cured. As an alternative, approximately 1/2 to 1 pound of 69T should be added to each unit of mixed 69 and blended thoroughly. This results in a material that may be applied with a caulking gun.

For deteriorated joints, repair the surrounding protective system with appropriate material. Consult Sauereisen for recommendations. The repair material should be 'keyed in' by sawcutting beyond the spalled concrete on both sides of the joint and mechanically removing the loose concrete. The joint should be reformed when placing the repair material by using a removable spacer; or the deteriorated joint area may be completely sealed with the repair material and a new joint sawcut after it cures. The resulting joint should then be filled with 69 as previously described.

69 will gel in approximately one (1) hour at 75°F. The compound shall be permitted to cure a minimum of 24 hours at 60°-90°F before being placed into service. Minimum cure temperature is 50°F. In the 50°-60°F range, the 69 requires a 48-hour cure period before being placed into service.


1 gallon unit
Part A Hardener 1 gallon can
Part B Liquid 1 gallon can
3 gallon unit
Part A Hardener 2 gallon pail
Part B Liquid 31/2 gallon pail
Containers are filled by weight, not volume. Container size does not indicate volume of contents.

Part A 1/2 pound in a F-style 1/2 pint container
Part B 7.4 pounds in one Imperial gal. container
69T Approximately 1 pound in a 1-gallon can

All equipment should be cleaned with acetone, xylene; monochlorotoluene, or MEK before 69 cures. If removal is required after cure, consult Sauereisen for recommendations.

Primer 501 has a shelf life of (1) year when stored in unopened, tightly sealed containers in a dry location at 70°F. If there is a doubt as to the quality of the materials, consult a Sauereisen representative Elastomeric Joint Compound 69 have a shelf life of six (6) months when stored in unopened, tightly sealed containers in a dry location at 70°F. If there is a doubt as to the quality of the materials, consult a Sauereisen representative.

Consult Material Safety Data Sheets and container label Caution Statements for hazards in handling these materials.

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