J-B Weld
J-B Weld 31312 White Silicone Sealant 3 oz
White silicone sealant bonds and seals mouldings, trim, windows, windshields, door frames and lens housings in a 3 oz tube
- White silicone seals gaps cleanly
- 3 oz tube handles small bonding jobs
- Bonds moldings, trim and window frames
- Seals windshields, door frames and lens housings
- Ready to use with or without a caulk gun
What It Is
J-B Weld 31312 is a white silicone sealant supplied in a 3 oz tube for bonding and sealing tasks. It fills gaps between dissimilar materials and can be applied with or without a caulk gun. The product is designed for use around moldings, interior trim, windows, windshields, door frames and lens housing.
When to Use It
This sealant replaces loose or deteriorated caulk in the listed applications and upgrades from basic fillers that lack silicone flexibility. The jump is worth it when a durable, water-resistant bond is needed on vertical or overhead surfaces that experience movement or temperature change.
Who It Suits
It suits DIYers and tradespeople who need a ready-to-use white silicone for the specific sealing jobs described. Buyers requiring a paintable acrylic formula, a larger cartridge for high-volume work, or a specialty adhesive for structural loads should look at something else.
Highlights
- White silicone seals gaps cleanly
- 3 oz tube handles small bonding jobs
- Bonds moldings, trim and window frames
- Seals windshields, door frames and lens housings
- Ready to use with or without a caulk gun
Specifications
| Brand | J-B WELD |
|---|
Questions about this item
Does the 3 oz tube fit a standard caulk gun?
The 3 oz tube is designed for use with a standard caulk gun or can be applied by hand.
What surface preparation step is often missed before applying this silicone?
Surfaces must be clean, dry, and free of old sealant or grease for proper adhesion.
When should the 31312 sealant be replaced after application?
Replace it if the seal shows cracking, shrinking, or loss of adhesion over time.
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