Global Firestop Services

Email us:

  Home Page
  Contact us
  Need a Quotation !
Quotation !


NuFlex 313 Fast-Cure Glass & Vinyl Silicone Sealant is a one-part, silicone sealant that cures to form a durable, flexible, low modulus sealant. The self-levelling property means reduced labor cost since tooling is not required.

NuFlex 311 can be used for the following; sealing horizontal expansion and control joints in parking garages, driveways, swimming pool decks, concrete floors and sidewalks.

All Surfaces must be dry and frost-free, free of oil, grease, rust, dirt or other contaminants that may inhibit proper adhesion. For porous substrates, such as concrete, wire brushing or air blasting (oil-free) is adequate. Most substrates do not require a primer before application of the NuFlex 311-SL sealant. It is recommended, however, that test samples of sealant be applied to the surfaces to test and verify adhesion. After the preparatory work is completed, mask where necessary to avoid spillage onto adjoining surfaces. Masking tape should be removed immediately after the sealant application is completed.
Limitations: NuFlex 311-SL should not be applied below grade, to surfaces under continuous water immersion, to substrates that bleed oils, plasticizers or solvents (e.g. impregnated wood, oilbased caulks, green or partially vulcanized rubber gaskets or tapes), to surfaces in direct contact with food, and to surfaces that will be painted over. (Do not use on vertical joints) NuFlex 313 Fast-Cure Glass & Vinyl Silicone Sealant is a one-part, Use in well ventilated areas and avoid breathing vapors. On contact, uncured sealant irritates eyes. Flush eyes with lukewarm water. Call physician. Avoid skin contact and do not ingest. Keep out of reach of children. For complete safety information consult Material Safety Data Sheet.

NuFlex 311-SL complies with ASTM C 920,Type S, Grade P, Class 25, Use NT, M, G, A, O and CAN/CGSB-19, 13-M87, Class MCG - 1 - 25 - A - L.

NuFlex 311-SL Silicone Sealant is available in a variety of sizes 300 ml (10.1 U.S. fl oz), all-plastic caulking cartridges with nozzle which fit manual or air operated caulking guns, (12 cartridges to a case). It is also available in 10 Litre (2.6 U.S. gallon) pails, 17 Litre (4.5 U.S. gallon) pails and 200 Litre (52 U.S. gallon) drums. NuFlex 311-SL Silicone Sealant is available in white and limestone colours. Special colours are available in orders of minimum quantities upon request. For sealant coverage or yields please see the “Coverage Chart” found in the “Application tip” section of the Nuco technical binder.

Shelf-life is 12 months from date of shipment from our plant when stored in clean, dry area with temperature between 40°F to 90°F (4°C to 32°C). For best results, keep the sealant in tightly closed containers when not in use.

NUCO Inc., warrants only that it’s product will meet it’s specifications. NUCO shall in no event be liable for incidental or consequential damage. NUCO’s liability, expressed or implied, is limited to the stated selling price of any goods found to be defective.

These values are not intended for use in preparing specifications. Spec Writers, please contact NUCO Inc. before writing specifications if any further information is required.

As Supplied
Type one part, self-levelling silicone sealant 
Cure Method neutral, moisture cure Specific Gravity 1.31
Working Time at 25°C (77°F) and 50% R.H. - 15 minutes
Application Temperature Range -29 to 50°C (-20 to 122°F)
Full Cure / Adhesion Time at 25°C (77°F) at 50% R.H. 14 - 21 days.
As Cured
100% Modulus (ASTM D 412). MPa (psi) 0.21 (30)
Tensile Strength (ASTM D 412). MPa (psi) 1.2 (175)
Elongation (ASTM D 412) 600%
Tear Strength (ASTM D 624, die ‘C’) kN/m (ppi) 4.9 (28)
Hardness ASTM C 661, Shore A) 12
H-Block Elongation (12.7 mm wide x 12.7 mm deep
(1/2” x 1/2”) sealant joint in concrete DIN 52455) 180%
Joint Movement Capability plus or minus 25%
The information and data contained herein is BASED ON INFORMATION WE BELIEVE TO BE RELIABLE. Please read all statements, recommendations or suggestions herein in conjunction with our CONDITIONS of SALE which apply to all goods supplied by us. We assume no responsibility for the use of these statements, recommendations or suggestions, nor do we intend them as recommendation for any use which would infringe any patent or copyright.

Return to:
Self Seal Products
All products

© Copyright 2012 All rights reserved
Designed and Maintained by: John Smillie/Lasting Impressions