XtraBond®50S - Sanded Premium Grade Siliconized Latex Sealant

XtraBond®50S is a Premium siliconized acrylic sanded color caulk used for caulking and sealing corners, edges and joints in tile, counters or granite surfaces. Use XtraBond®50S caulking countertops and around sinks, bathtubs and backsplashes. Meets ASTM C834 standards for exterior grade caulks.


  • Tile & Flooring
  • Cultured Marble
  • Stucco Homes & Structures
  • Masonry Applications


  • Sanded Appearance
  • Plethora of Colors
  • Mold & Mildew Resistant
  • Flexible
  • Paintable with latex paint after full cure
  • Interior/Exterior Use


Technical Specs

Skin Time Less than 15 minutes @ 77 degF/ 50% RH
Tack Free Time Less than 1 hour @ 77 degF/ 50% RH
Cure Rate 1/4” Bead per 24 Hrs
VOC 9 g/L 0.0751 lb/gal
Elongation @ Break 400%
Shore A 25 +/- 5
Movement Capability 25%
Lap Shear 550 psi
Staining None
Low Temp.  Flexibility Retained to -90 deg. F.
High Temp. Flexibility Up to 425 deg. F for short periods
Sag None



This product is offered in hundreds of colors using our Custom Color Matching & Mixing System.

For current color offerings, please visit the Online Color Matching Program.

NOTE: This product also qualifies for our Private Label Program.


The XB50S is available for the following industries

Packaging & Pictures

drum pail tube This product is available in the following configurations:

  • 10.1 oz cartridges: Twist-On Nozzles
  • 4.5 gal in a 5 gal pail
  • 52 gal in a 55 gallon drum

Other packaging is available upon request

Limited Lifetime Warranty

This product is guaranteed to give satisfactory performance if applied in accordance with the label directions. Liability to Premier Industrial Supply, Inc. (Premier) is limited to a full refund of the purchase price or product replacement if product is proven defective. Premier shall not be liable for loss or damage, whether direct, consequential or incidental. There are no other warranties expressed or implied including the implied warranty of merchantability or fitness for a particular purpose.