Dap 00686 RTV Silicone Gasket Maker, 2.8 Oz, Black

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100 percent silicone. For mechanical repair and household use. Provides a flexible oil tight and water tight seal even under pressure that won't crack, crumble or dry out. Requires no mixing.
SKU: 40010666
MFG: 00686
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Dap Gasket Maker is a one component, acetoxy cure, 100% RTV silicone rubber sealant that is ideal for mechanical repair and household use. It can be used for making gaskets on engine parts, cars, motorcycles, appliances, power yard equipment and more. It provides a waterproof seal, stays flexible and won’t crack, crumble or dry out. Once cured, it is unaffected by temperature extremes (-40°F to 400°F).


  • Forms a durable flexible seal
  • Resists temperatures up to 400°F
  • Resistant to oil, grease, water and fuels
  • Unaffected by vibration
  • OEM Specified
  • Sensor-safe

Ideal Use For:

  • Forming gaskets on engine parts, cars, motorcycles, appliances and power yard equipment
  • Use on intake manifolds, water pumps, hose connections and rocker arm covers
  • Protecting electrical connections and grommets
  • Sealing vents, gutters, windshields (not for windshield cracks) and weatherstripping

Adheres To:

  • Glass
  • Fiberglass
  • Most metals
  • Painted surfaces
  • Most plastics and rubbers

Performance Characteristics:

When cured and washed, the product meets the requirements of FDA Regulation No. 21 CFR 177.2600.


  • Color: Black
  • Size: 2.8 Oz
  • Packing Type: Tube
  • Drying Time: 24 hr
  • Standards: OEM Specified, Specification C 920, Class 25, Type S, Grade NS
  • Composition: Methyltriacetoxysilane, Ethyltriacetoxysilane
  • Flammability Rating: 1
  • Specific Gravity: 1.04
  • Polymer: Silicone Rubber
  • Working Time: 5-10 Minutes
  • Tack Free Time: 10-20 Minutes
  • Dynamic Joint Movement: ±25%
  • Paintable: No
  • Odor: Vinegar-like
  • Consistency: Smooth, Paste
  • Solids: 97.0% ±-1.0% by weight
  • Density: 8.6 ±- 0.10 lbs./gallon
  • Temperature Service Range: -40°F to 400°F (after full cure)
  • Temperature Application Range: -35°F to 140°F
  • Freeze Thaw Stable: Yes
  • Shelf Life: 18 months
  • Coverage: 2.8 Fl. Oz.: 15 ft. at 3/16" bead size


MFR: 00686
SKU: 40010666
UPC: 070798006867
Brand: Dap
Attachments: MSDS Sheets, Specifications,