23070 Oakgrove Rd 100
NAPA Auto Parts NAPA Auto Parts Herndon
23070 Oakgrove Rd 100
Sterling,  VA  20166
(703) 707-0800
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Store Hours
Mon-Fri:8:00 AM-7:00 PM
Sat:8:00 AM-5:00 PM
Sun:9:00 AM-4:00 PM
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Gasket Maker & Sealer JB Weld 3 oz Black RTV Silicone
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Gasket Maker & Sealer JB Weld 3 oz Black RTV Silicone

Part #: NCB 31319
Line: NAPA Consumer Brands
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Features & Benefits

Warranty: Standard : No Warranty, Expressed or Implied


JB Weld black silicone sealant and adhesive is a general purpose RTV (room temperature vulcanized) silicone designed for sealing and bonding uneven surfaces.

  • Upon curing, which occurs when the product is exposed to the moisture in air, the silicone forms a tough, waterproof seal on most surfaces.
  • Cures to a black color.
  • It will not shrink or crack, resists weathering and is great for many automotive accessories and household applications.
  • Great for bonding and sealing, weather stripping, moldings, interior trim, windows, windshields, door frames, and lens housings.


Brand NAPA
VMRS Code 053999097

Safety Information