Press-Seal Western Division, formally known as JK Polysource, is your western supplier of precast products for infrastructure.

We are in the process of developing more product literature and information for your convenience – these documents are temporary during the transition from JK to Press-Seal.

Diamond Core Bits

Rock-Weld Diamond core drilling bits, use the highest quality diamonds uniquely placed throughout entire segment providing long lasting bit life with faster coring times. The bits are specifically designed for the application of diamond core drilling precast manhole structures.

Standard sizes 2’-54”. Resegmenting available. Custom diameters and lengths upon request.

Download Core Drilling Bits Literature

JK-M860 Joint Wrap

External joint wrap M-860 is a pre-formed, cold applied, self-adhering material that is impermeable to water and salt. The adhesive is manufactured from specially formulated elastomeric resins bonded to a woven highly puncture resistant polymer. Blended in the adhesive is an “integrated primer”. The adhesive is protected in roll form by an easily removed polymer release liner.External joint wrap M-860 has been designed to provide a watertight seal on concrete and metal surfaces. It has a tough woven polypropylene backing combined with an extra thick layer of synthetic elastomeric adhesive sealant with integrated primer. It resists severe soil stress on underground applications such as concrete pipe, manholes, septic tanks, vaults and works well on three sided bridges. It can be applied to clean, dry concrete without a primer. (Primer is recommended for temperatures below freezing.)
For use on:

  • Concrete Pipe
  • Manholes
  • Septic Tanks
  • Vaults
  • Three-sided Bridges
Download M-860 Wrap Literature

Pipe Joint Lubricant

POLYLUBE – 1 Gallon and 5 Gallon pails

  • Economical and NSF Approved
  • General Purpose – Soap Based – Non Toxic
  • Temperature Range: 32° to 140°F

Polylube Ultra – Quart, Gallon and 5 Gallon pails

  • Wider Temperature Range: 10° to 140°F
  • NSF approved for potable water systems
  • Contains no petroleum

Poly Prolube – (VSL-25)Sub-Aqueous

  • Resists wash-off
  • Temperature Range: 32° to 120°F
  • Will not support bacteria or cause gasket swelling

We certify that Polylube and Polylube Plus have been tested in accordance with ASTM C-497 and approved by NSF / ANSI for drinking water systems.

RamNek Joint Sealant

Ram-Nek Preformed Flexible Plastic Gasket will seal everything from storm sewer pipes, box culverts and manholes to septic tanks, utility vaults and wet wells. Available in strips and coils. Meets Federal Specification SS-S-210 (210-A), AASHTO M-198 75 1 and ASTM C990-09.

Download Ram-Nek Literature

Rubr-Nek Joint Wrap

Rubr-Nek external joint wrap is an easy to apply protective film that self heals against punctures and has excellent mechanical strength, abrasion resistance and dimensional stability. This protective wrap has been carefully configured for ease of application by hand and to provide an effective and long term seal for a wide range of concrete joints. RUBR’NEK is available in 6″, 9”, and 12″ widths.

Download Rubr-Nek Literature

Steel Spacers

Weststern States Steel Corporation develops, manufactures, and distributes through its network of seven facilities, a complete line of steel spacers for the concrete pipe and precast industry in the United States, Canada, and Mexico. The corporation holds numerous patents on a variety of spacers. In addition to manufacturing spacers for single cage pipe, double cage pipe, elliptical pipe, and box culverts, we also manufacture specialty wire formed products for non-
standard applications.