Sikaflex 521 Light Gray UV Resistant Low Modulus Sealant 600 ml Unipac

Sika Corporation
Item #
Mfr. Model # 106097

Sikaflex 521, Light Gray, UV Resistant Low Modulus Sealant, 600 ml Unipac

Sikaflex-521 UV is a multi-purpose, UV resistant, non-sag, elastic, one-part silane-terminated polymer sealant, which cures on exposure to atmospheric moisture to form a durable elastomer. Sikaflex-521 UV is solvent and isocyanate free.

Sikaflex-521 UV bonds well to a wide variety of substrates and is suitable for making permanent, high-strength elastic seals. Compatible substrate materials include wood, metals, (particularly aluminum including anodized components), sheet steels (including phosphated, chromated and zinc-plated components), metal primers and paint coatings (two-part systems), cera¬mic materials, plastics and glass.

Characteristics and Advantages:

  • Bonds well to a wide variety of substrates without the need for special pre-treatment
  • Resistant to UV radiation
  • Very low VOC/solvent free
  • Silicone and PVC-free
  • Isocyanate-free
  • High electrical resistance
  • Resistant to aging and weathering
  • Elastic
  • Low odor
  • One-part formulation

  • Aging and weathering-resistant
  • Bonds well to a wide variety of substrates without the need for special pre-treatment
  • Isocyanate- and solvent-free
  • Can be painted
  • Can be sanded
  • Low odor
Product Details
Specification Description
# of Components: Single Component
Adhesive/Glue Type: Caulks & Sealants
Brand Name: Sika Corporation
Brand Part Number: 106097
Chemical Base: Hybrid
Color: Light Gray
Cure Mechanism: Moisture
Elongation: 400%
Model: Sikaflex 521
Operating Temperature: -58° to 194°F
Package Type: Unipac
Paintable: Yes
Primary Application: Outdoor
Shelf Life: 365 days
Shore Hardness: 40A
Size: 600 ml
Temperature Rating: Standard (Less Than 200°F)
Tensile Strength: 260 psi
Working/Tack/Skin Time: 30 Minutes
$29.42 / each

Must order in increments of 20 units
Estimated to ship Mon. Jul 08.