Minerallac White Lightning RTV...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$75.64
$33.71
Minerallac White Lightning RTV Silicone Sealant Clear 10 Oz Professional Grade

Minerallac White Lightning RTV Silicone Sealant Clear 10 Oz Professional Grade

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Model: 37530

In Stock (leaves warehouse same day if ordered before 3pm ET)

$75.64
$33.71
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Minerallac White Lightning RTV Silicone Sealant Clear 10 Oz Professional Grade

Professional-grade RTV silicone sealant for interior and exterior applications

Minerallac White Lightning RTV Silicone Sealant delivers professional-grade sealing performance with 100% RTV silicone construction and clear finish in a convenient 10 oz size. This permanently flexible sealant provides excellent adhesion to non-porous materials while resisting moisture, mildew, and temperature extremes from -50�F to 450�F, making it ideal for demanding interior and exterior sealing applications.

Professional Features & Benefits

  • 100% RTV Silicone Base: Provides superior durability and long-lasting performance compared to standard sealants
  • Temperature Range -50�F to 450�F: Maintains flexibility and adhesion across extreme temperature conditions
  • 24-Hour Functional Cure: Allows for quick project completion with reliable curing timeline
  • Clear Color Finish: Provides invisible sealing that won't detract from project aesthetics
  • VOC Rating 30 g/L: Meets environmental standards for safe indoor and outdoor use
  • Permanently Flexible Formula: Won't crack, crumble, or shrink over time, ensuring lasting seal integrity
  • Moisture and Mildew Resistance: Prevents degradation in humid conditions and wet environments

Technical Specifications

  • Base Content: 100 RTV Silicone
  • Country Of Origin: United States
  • Flash Point: >200F
  • Functional Cure: 24 Hours
  • Product Color: Clear
  • Product Size: 10
  • Product Type: Caulk / Sealant
  • Standard: VOC Rating 30 g/L
  • Temperature Range: -50F to 450F

Professional Applications

  • Residential Interior Sealing Projects
  • Exterior Building Envelope Applications
  • Commercial Facility Maintenance
  • Industrial Equipment Sealing
  • HVAC System Connections
  • Plumbing and Electrical Penetrations
  • Window and Door Installation

Why Choose Minerallac Quality?

Minerallac White Lightning RTV Silicone Sealant combines proven 100% RTV silicone technology with professional-grade performance standards. The 24-hour functional cure time and VOC rating of 30 g/L demonstrate the manufacturer's commitment to both efficiency and environmental responsibility, while the extreme temperature range ensures reliable performance in the most demanding applications.

Manufacturer Resources

Product Specs

Base Content:
100 RTV Silicone
Country Of Origin:
United States
Flash Point:
>200F
Functional Cure:
24 Hours
Product Color:
Clear
Product Size:
10
Product Type:
Silicone Sealant
Standards:
VOC Rating 30 g/L
Temperature Range:
-50F to 450F
Department:
Electrical
Product Group:
Jobsite Supplies
Product Subgroup:
Sealants

Minerallac 37530 – Frequently Asked Questions

1) Can Minerallac 37530 RTV silicone be used on a hot flue, HVAC duct or around equipment that runs hot?
The Minerallac White Lightning RTV silicone holds up from -50F to 450F, so it stays flexible and bonded on HVAC connections and warm equipment housings as well as outdoors in winter. That temperature range is service range for the cured silicone, not a rating for direct flame contact.
2) Will this clear silicone stick to painted drywall or bare concrete?
It is built for non-porous surfaces. The 100% RTV silicone formula gives its best adhesion on glass, metal, tile, glazed and finished non-porous materials. On porous substrates like raw concrete, masonry or unfinished wood, and anywhere you need to paint over the joint, use a paintable acrylic latex or a polyurethane sealant instead. Silicone will not take paint.
3) Can I use this to seal electrical and plumbing penetrations through an exterior wall?
That is one of its intended uses. The clear silicone seals plumbing and electrical penetrations, window and door perimeters and exterior building envelope joints, and the -50F to 450F range covers outdoor exposure in any climate. Note it is a weather sealant, not a firestop, so it is not a substitute for a rated firestop sealant at a fire-rated wall penetration.
4) How long before I can get water on a joint sealed with this silicone?
Functional cure is 24 hours. For a shower surround, a sink rim or an exterior joint that is going to see rain, give it the full day before exposing it to water or putting the fixture back in service. Skin-over happens much sooner, but the 24 hour figure is the one to plan the job around.
5) Does this sealant meet low-VOC requirements for interior work in a school or hospital?
The White Lightning RTV silicone carries a VOC rating of 30 g/L, which is the figure to put on a submittal when a spec calls out a VOC limit for sealants. That is the only VOC number stated for it, and it applies to the clear 10 oz cartridge.
6) Will clear RTV silicone mildew in a bathroom or around a kitchen sink?
The formula resists moisture and mildew, so it is suited to humid and wet areas like bath fixtures, sink rims and backsplashes. It stays permanently flexible rather than cracking or shrinking as the joint moves, which is what usually opens a path for water behind a bead.
7) Is this a 10 oz tube that fits a standard caulk gun?
Yes, model 37530 is a 10 oz cartridge, which is the common size for a standard half-barrel caulking gun. One model is offered on this product, clear in 10 oz.
8) Is the Minerallac 37530 silicone made in the USA, and is it flammable in the tube?
It is manufactured in the United States, and the flash point is above 200F, so it is not a flammable-liquid classed product for storage on the truck or in the shop.
How fast can I get the Minerallac 37530 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Minerallac 37530 come with a warranty?
Absolutely. The Minerallac 37530 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Minerallac 37530?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Minerallac 37530 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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