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Sealants & Caulk

Industrial sealants and caulk are essential MRO supplies used to create watertight or airtight barriers, fill gaps, and bond surfaces in maintenance and facility applications. These products include silicone sealants, polyurethane caulks, latex caulks, and specialized industrial...

1 products
3M|SKU: MRO-AD-002
Silicone Sealant, Clear, 10.1 oz Cartridge

All-purpose clear silicone sealant for waterproofing and sealing joints. Flexible, mold-resistant, rated for -60F to 400F. Standard caulk cartridge.

$6.99 /per cartridgeIn Stock
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How to Choose the Right Sealants & Caulk

When selecting industrial sealants, first consider the environmental conditions and substrate materials. Key factors include temperature range, chemical exposure, UV resistance, and movement capability (stated as ± percentage). Match the sealant's properties to your specific application requirements, such as food-grade certification, flame resistance, or electrical insulation properties.

Cure time and application method are critical operational considerations. Most industrial sealants are one-component systems that cure through reaction with atmospheric moisture, typically achieving initial skin formation in 10-30 minutes and full cure in 24-72 hours. Two-component systems offer faster cure times but require mixing equipment. Consider workspace ventilation requirements and VOC content, especially for indoor applications.

Surface preparation and compatibility with primers or coatings must be evaluated. Many industrial sealants require specific surface preparation procedures and primers to achieve optimal adhesion. Check manufacturer specifications for compatibility with common industrial substrates like steel, aluminum, concrete, or plastics. For critical applications, review relevant standards such as ASTM C920 for joint sealants or UL classifications for firestop systems.

Frequently Asked Questions

How do I choose between silicone, polyurethane, and hybrid sealants?
Select based on application requirements: Silicone offers excellent temperature resistance and UV stability, ideal for outdoor use. Polyurethane provides superior mechanical strength and abrasion resistance, better for moving joints. Hybrid sealants (MS Polymer) combine benefits of both with better paintability and environmental friendliness.
What are common industrial applications for sealants?
Industrial sealants are used for HVAC duct sealing, equipment mounting, electrical conduit sealing, concrete joint filling, and general maintenance repairs. Specific formulations exist for metal fabrication, food processing equipment, clean room applications, and chemical containment areas.
What certifications should I look for in industrial sealants?
Key certifications include NSF/ANSI 51 for food equipment materials, UL listings for electrical applications, ASTM C920 for joint sealants performance, and FDA compliance for food contact. Some applications may require specific fire ratings (UL 1479) or low-VOC certifications for indoor use.
What is the typical coverage rate per cartridge?
A standard 10.1 oz cartridge typically covers 12-15 linear feet for a 1/4" bead size. Coverage varies based on joint dimensions and depth. For larger projects, calculate volume requirements using: Length (ft) x Width (in) x Depth (in) ÷ 12 = cubic inches needed.
Can industrial sealants be painted?
Most silicone sealants cannot be painted. Polyurethane and hybrid sealants are typically paintable after full cure (24-72 hours). Always verify paint compatibility and recommended cure times in product documentation. Some applications may require specific paint-compatible formulations.