Fast-setting hydraulic-cement mortar



SpecPlug is a durable, fast-setting hydraulic-cement mortar that stops flowing water through holes and cracks in concrete and masonry surfaces.

SpecPlug will not shrink or oxidize.

Features & Benefits

  • Single component; just add water and use
  • Sets in approximately 3-5 minutes — stops flowing water fast
  • Certified to NSF/ANSI Standard 61 for potable water contact
  • Expands as it sets, bonds strongly to concrete, and makes watertight repairs

Product Comparison

Speed Plug

BASF Masterseal 590 (Waterplug)

Sikaset Plug


L&M Duraplug

Lambert Lambco® Plug

Lyons Plug-Crete

DOT Approvals


Need help? Call our Customer Service Team at 816-968-5600.

SpecChem is America’s #1 manufacturer of concrete construction chemicals and the industry’s gold standard for high-performance concrete and construction products.