23070 Oakgrove Rd
NAPA Auto Parts NAPA Auto Parts Herndon
23070 Oakgrove Rd
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 Blue RTV Silicone
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Gasket Maker & Sealer JB Weld 3 oz Blue RTV Silicone

Part #: NCB 31316
Line: NAPA Consumer Brands
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Features & Benefits

Warranty: Standard : No Warranty, Expressed or Implied


JB Weld blue silicone gasket maker and silicone is an RTV (room temperature vulcanized) silicone designed for use in mechanical assemblies, 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 blue color.
  • Will not shrink or crack, resists weathering, is sensor safe and is great for many automotive applications.
  • Great for timing gear covers, transmission pans, oil pans, water pumps, valve covers, differential covers, and thermostat housings.


Brand NAPA
VMRS Code 053999097

Safety Information