CRL Clear 33S Silicone Sealant

Brand

CRL
Size

10.3 oz (304.6 ml) Cartridge
Color

Clear
Shelf Life

24 Months from Date of Manufacture
Case Quantity

30 Cartridges per Case

Seal with confidence using CRL Mildew Resistant Clear 33S Silicone Sealant from CWGHP – durable, flexible, and perfect for high-moisture areas. Order today!

Top Features:

• Our best-selling silicone with added mildew- and mold-resistant agents
• Easy-to-use plastic cartridges with screw-on nozzles
• Available in eight popular colors
• 24-month shelf life*
• Backed by a 10-year limited warranty

Trusted Performance:
CRL 33S Silicone is a high-performance, one-component acetic cure silicone sealant designed to meet professional demands. It requires no mixing or additives and cures at room temperature into a tough, flexible elastomer.

Ideal Applications:

• Designed for sealing and joining non-porous building materials
• Perfect for use on glass, aluminum, stainless steel, wood, and plastics
• Indoor uses include bathtubs, showers, curtainwalls, windows, and skylights
• Mildew-resistant versions available in clear, white, translucent white, and tan

Technical Strength:

• Withstands temperatures from -80° to 400°F (-62° to 204°C)
• Application range: -35° to 140°F (-37° to 60°C)
• 350 psi tensile strength | 120 psi lap shear | 25 ppi tear strength

Compliance & Certifications:

• Meets TT-S-001543A and TT-S-00230C (Class A Sealants)
• ASTM C-920 compliant | NSF Certified | UL Recognized Component
• FDA-compliant for food-related applications | LEED® credit eligible

Comparable To:
Dow Corning® 999-A, GE® 1200 Construction, Tremco® Tremsil 200, Sika® SikaSil® GP, and more.

Important Considerations:

• Not for structural glazing, submerged joints, or use on stone/concrete
• Not suitable for painting or certain coated/porous surfaces
• Primer (Cat. No. S1L2100) may be required for optimal adhesion

Storage Note:
Clear 33S remains transparent if stored properly in a cool, dry place. When exposed to UV light before curing, the silicone may temporarily turn pinkish but will fully return to clear within 24–48 hours of curing.

Product Notice:
Always refer to the cartridge label and Safety Data Sheet for complete usage guidelines. Shipping weights are estimates.

Choose CRL 33S Silicone Sealant for reliable, professional-grade performance in moisture-prone environments.

Brochures & Literature: Glass Railing Installation Sealants Information

Installation Instructions: CRL Sealant Basic Uses and Limitations

Safety Data Sheets: Silicone Sealant Safety Data Sheet

Specifications: 33S Silicone Spec Data SheetLEED Statement