Navigating These Challenging Times Together

First, we want to thank you again for your continued support during this difficult time. Like everyone else we are just trying to take things one day at a time and get through this the best we can. We'd like to share some information with you to help you stay updated with what's going on at Hatchet Hardware in the coming days.

Store Hours:
As an essential business, our shops will continue to stay open. Our teams are working incredibly hard to be here for our communities in any way that we can so please be courteous. You can find our current store hours on the locations page:
Feel free to call the shops ahead to make sure we have whatever you need before coming out and please remember that you can shop online at at any time.

Steps We're Taking:
Our offices are all currently set up to work from home to help stop the spread of COVID-19. At our warehouse and shops, we have increased efforts to disinfect high-touch and high-trafficked areas throughout the day and increased daily cleaning routines. We are also making sure all employees have up-to-date information on how to stay healthy and what preventative measures should be taken and the ability to stay home if they are feeling unwell.

You may experience delays in shipping as we are taking the necessary precautions to protect you and our team. We are still working hard to get in-stock items shipped within 24 hours. Few items may temporarily have longer fulfillment times.

Customer Service:
Our customer service team is working hard to help all customers as quickly as possible. Due to technical difficulties and a higher volume of calls you may experience interruptions. In the event this occurs, please email us at or message our chat here on the site. We apologize for any inconvenience and thank for your continued support and understanding.

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Dap 00686 RTV Silicone Gasket Maker, 2.8 Oz, Black

Regular price $9.59

Free Shipping over $35

Available for store pickup from Brunswick. 5 in stock.
Available for store pickup from Waterford. 7 in stock.
This item is not available for local pickup.
Not available to ship to home.
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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


1.0 lb