Seal-Press, Inc. San Antonio, Texas Seal-Press began building their refuse body in 1954, a circular side loader with a cable driven packer plate. Externally, it was remarkably similar to the Pak-Mor product, which was being built a few short miles south of the Seal-Press plant in San Antonio. Below is a photo of a fleet of Seal-Press packers purchased by the city of Laredo, Texas in 1956. From the front they could easily be mistaken for Pak-Mor bodies: However, the rear view reveals the easy way to identify the early Seal-Press, which had a reverse-slant to the rear of the circular body. Instead of barn doors, a top-hinged, one-piece tailgate was pushed open by the load during ejection: The reverse-slant of the body coincides with a forward slanted packer plate, so designed to force the compressed load upward during the pack cycle to minimize air pockets and dead space. HYDRAULIC SEAL-PRESS An all-hydraulic Seal-Press arrived in mid-1961, just months before the release of the H-series from rival Pak-Mor. The new Seal-Press units featured a angled pack cylinder delivering 85,000 pounds of force, and conventional barn-type rear doors: A container lift (all hydraulic) was also offered on the new '61 Seal-Press units Rear door details New Orleans, Louisiana bought several of the new hydraulic Seal-Press packers in 1962 Seal-Press also offered semi-trailer compaction units as shown above Continued... 4/5/09 © 2009 Eric Voytko All Rights Reserved Logos shown are the trademarks of respective manufacturers Photos from factory brochures/trade advertisements except as noted