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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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 Ultimate Grey RTV silicone
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Gasket Maker & Sealer JB Weld 3 oz Ultimate Grey RTV silicone

Part #: NCB 32327
Line: NAPA Consumer Brands
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Features & Benefits

Warranty: Standard : No Warranty, Expressed or Implied


JB Ultimate Grey gasket maker and sealant is an RTV (Room Temperature Vulcanized) silicone gasketing material.

  • Designed for use in mechanical assemblies where higher torque or closely spaced bolt profiles can lead to higher loads and cause gasket and sealing failures for average silicones.
  • Great for Import Vehicles, intake manifolds, transmission pans, oil pans, timing gear covers, and Cam covers.
  • Cures to a grey color
  • Made in USA
  • 100% Silicone
  • Upon curing, which occurs when the product is exposed to the moisture in air, the silicone forms a tough, waterproof seal on most surfaces.
  • Will not shrink or crack


Brand NAPA
VMRS Code 053999097

Safety Information