IPS Weld-On P-68 Primer

IPS Weld-On P-68 Primer


Weld-On P-68 Primer is a purple or clear, reduced VOC emissions,nonbodied, fast acting, water-thin solvent. It is distinctly coloured purple so detection of its use in a joint can be made. The strong action of P-68 Primer softens and dissolves the joining surfaces of PVC and CPVC pipe and fittings very rapidly.

Weld-On P-68 Primer, when used in conjunction with appropriate Weld-On cements, will make consistently strong, well fused joints. It is essential that the joining surfaces of pipe and fittings be softened prior to assembly. The main function of this primer is to expedite the penetration and softening of thee surfaces. Its rate of penetration into the joining surfaces is much more rapid than that of cement alone. It is suitable for use with all types, classes and schedules of PVC and CPVC pipe and fittings.

Detailed directions on making solvent cemented joints are printed on the container label. An installation video covering solvent cementing is available. It not only describes the basic principles of solvent cementing, but also covers the handling, storage and use of our products. It is highly recommended that the installer review the instructions supplied by the pipe and fitting manufacturer.


  • Colour: Purple or clear
  • Specific Gravity: 0.845± 0.040
  • Viscosity: Water-thin
  • Max VOC Emissions: 650G/L per SCAQMD Rule 1168, Method 316A

Shelf Life

3 year expectancy in tightly sealed containers. The date of the manufacturer is stamped on the bottom of the container. Stability of the product is limited to the permanence of the container and the evaporation of the solvent when container is open.

Standards and Approvals:

Weld-On P-68 meets ASTM F-656, SCAQMD Rule 1168/316A and is listed by NSF International for use on potable water, sewer, drain, waste and vent systems. P-68 Purple only is listed by the International Association of Plumbing & Mechanical Officials (IAPMO) and carries the Uniform Plumbing Code (UPC) seal. This primer is suitable for use with PVC and CPVC piping systems approved by (SBCC) Southern Building Code Congress and (BOCA) Building Officials Congress of America.

Important Note:

This product is intended for use by skilled individuals at their own risk. These suggestions and data are based on information we believe to be reliable. Installers should verify for themselves that they can make satisfactory joints under varying conditions. Toward this end, it is highly desirable that they receive personal instruction from trained instructors or competent, experienced installers. Contact us or your supplier for additional information or instruction.


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