Chemseal 2727

CS 2727 is a flexible epoxy compound especially useful for sealing concrete joints located in liquid oxygen (LOX) spillage area, but not limited to that application.  CS 2727 withstands the LOX impact test and has excellent resistance to water, fuels, and extreme weathering. 

CS 2727 was initially approved in 1959 by the USAF Ballistic Missile Division for sealing concrete joints located in LOX spillage areas on missile launch facilities.  CS 2727 also complies with requirements from medical gas providers for the construction of joints in concrete pads used for the storage of liquefied medical oxygen.   The applicator is responsible for obtaining suitable joint designs from the provider of the medical or industrial gas equipment. The joint to be sealed with CS 2727 should be 0.250” – 0.500” (6.35 12.7 mm) in width and a maximum of 1.000” (25.4 mm) in depth.  A filler of non-combustible, inert material such as gypsum may be used to reduce the overall depth.  Larger dimensions could result in cracking or dishing in the cured compound or a pulling away from the sides of the joint.

Coverage: A gallon kit contains 173 cubic inches (2.84 L) of material, it is enough for 57 linear feet with a ¼” x 1” joint (17 m with a 6 mm x 25 mm joint). Quart kits are also available.