Pecora Dynaflex Non-Sag Polyurethane 1.5 gal pail


  • Pecora Dynaflex is a multi-component, non-sag polyurethane security sealant 1.5 gal pail
  • All interior joints and perimeters of fixtures, penetrations, vents, doors, windows and all other similar openings where a flexible security sealant is required
  • Interior window glazing
  • Heavy pedestrian traffic expansion and control joints for security and non- security areas

Data Sheet

Pecora Color Pack Link

Available on backorder


Pecora Dynaflex is a multi-component, tamper resistant, flexible poyurethane security sealant. Dynaflex is ideal for interior joints and perimeters of fixtures, penetrations, vents, doors, windows and all other similar openings where a flexible security sealant is required. 1.5 gal pail. Questions? Contact us

Pecora Dynaflex is a unique two-part, non-sag, tamper resistant elastomeric polyurethane joint sealant.

Dynaflex is designed to achieve high tensile and tear strength, abrasion resistance and an ultimate Shore A hardness of 55, yet withstand 25% total joint movement.As a result, this rugged, but flexible sealant is ideally suited for use in institutional and correctional facility installations. The sealant performs equally as well in other public buildings and facilities where ordinary sealants are easily damaged or torn out by idle tampering and acts of vandalism.

Note: In high security areas where a harder material is required and flexibility is less important, Pecora Dynapoxy EP-1200 with a Shore D hardness of 70 is recommended.

Limitations: Dynaflex is not to be used: In active joints experiencing movement greater than ±12-1/2% : in compression or extension.

Surface Preparation: Proper joint preparation is extremely critical. All surfaces must be clean, dry, and free of all foreign matter or contamination such as oil, grease, wax, bitumen, curing com- pounds, form-release agents or other coatings.

Old caulking materials should be removed from masonry joints by grinding or sawing to sound virgin substrates to insure optimum performance of the new sealant. Metal surfaces must be free of rust, corrosion and protective coatings.

Priming: Security caulking demands exceptional adhesion, particularly in isolated containment areas like inmate living cells, etc. Since Dynaflex’s higher hardness puts extra stress on the bond line, P-75 or P-200 epoxy primer should always be used on porous substrates to obtain superior adhesion. Steel, alu- minum, and glass should be primed with P-100. When applying Dynaflex over block that has been sealed with a block- filler, priming may also be necessary. A field test should always be conducted to confirm satisfactory adhesion. Contact Technical Services (800-523-6688) for other recommendations for priming or other surface treatment.

Pecora Dynaflex Safety Data Sheet

Additional information

Weight 8.6 kg
Dimensions 24.77 × 24.77 × 24.77 cm