75A Black Underwater Urethane Potting Compound – 2 Quart Kit

$79.00

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AeroMarine Underwater potting compound is used for encapsulating circuitry and splicing cables.
Most applications tend to involve immersion in sea water, although the product is suitable for many other applications.
Simple 1:1 mix ratio
2 quart kit.

DESCRIPTION
HOW-TO
SHIPPING & RETURNS
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TDS

PRODUCT DESCRIPTION

Features:

Room temperature cure
Low viscosity
Simple, noncritical 1:1 mix ratio
Negligible shrinkage

Specifications:

Viscosity: 850cps
Color: Black
Work life: 10 minutes@70F
Cure time: 12 hours@70F
Shore Hardness: 75A
Dielectric Strength: 450 volts/.001”
Volume Resistivity: 1.3 x 1014 Ohm/Cm
Tensile elongation: 150%
Tensile strength: 650psi
Maximum temperature: 105°C

HOW-TO:

Mixing:

Use between 65F and 75F in a humidity-controlled environment. AeroMarine Products Underwater Potting Compound is moisture sensitive before cured.
Use only clean plastic and/or metal mixing utensils and containers.
Do not use paper or wood.
Re-cap the bottles immediately after use.
Extend-It aerosol nitrogen blanket can be used to protect the product from moisture contamination.
Shake both A and B sides vigorously.
Measure out equal parts, by volume, of A and B into clean plastic or metal containers.
Combine both sides into a third clean mixing container and mix vigorously for at least one minute, taking care to scrape the sides and bottom of the mixing container with your mixing utensil, until the product is one uniform color.
If you are pouring layers of Underwater Potting Compound, let each layer fully cure before pouring subsequent layers. Underwater Potting Compound The bonds very well to itself.

Best Practices Using Urethane Elastomers:

Never mix less than about 3 ounces of product. When manufacturers design and test their resins, they normally write the specifications for 100 gram batches, which is about 3 ounces.
There are two things that can go wrong when mixing a smaller batch. It is much more difficult to get the correct mix ratio when working with very small amounts. Also, these mixtures are exothermic, meaning they generate heat in order to cure. A mixture of less than three ounces does not generate much heat and can take significantly longer to cure.
Avoid mixing with drill motors. Because of the friction they generate, mixing with electric drills can start the exothermic cure process and cause the product to cure in the mixing container. They can also whip air into the resin causing air bubbles. It is always best to mix the material by hand, with a plastic or metal mixing utensil.

Don’t vary the mix ratio. Unlike some polyester resins, altering the mix ratio to vary the cure cycle will not work with urethanes.
Mix in clean plastic containers. Paper cups and wooden mixing utensils may contain moisture which can adversely affect the urethane rubber. Avoid waxed paper cups because the wax may melt and contaminate the resin.
How to avoid air bubbles- Air bubbles in urethanes are almost always caused by moisture. Do everything possible to avoid moisture getting into the mix. Replace the lids onto the containers promptly after use.
Do not use the urethane rubber during rainy days or times of high humidity. Avoid pouring against an unsealed water based product such as plaster or hydrocal.
Seal plaster or hydrocal with a product like Krylon Clear Acrylic.
Shelf life- When stored in the original, unopened containers in a cool, dry environment, out of direct sunlight, the shelf life is six months. Once opened, shelf life can be preserved with the use of “Extend-It” aerosol nitrogen blanket.
Avoid mixing a large batch- The larger the batch, the more exotherm or heat is generated in the cure cycle. If you are making a large mold, mix small batches to make the process more manageable.
Shake or stir well before use- The liquid components may settle in the containers during storage. Shake or stir the components separately and thoroughly before mixing. Let it sit a few minutes to let any bubbles rise to the surface after shaking the container.
Always wear a respirator or self –contained breathing apparatus when working with urethanes.
Do NOT spray. Our urethanes are only for pouring applications.
Urethanes are moisture-sensitive before fully cured. Do not use paper, wax or wood mixing tools.
Always re-cap container immediately after pouring product.

Technical Data Sheets (TDS)

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SHIPPING AND RETURNS

Shipping
Via UPS Ground

Returns
We only accept returns of unopened and unused product. Customer must return product within 30 days of receipt. Customer must contact us before returning a product. Customer pays for return shipping. All returns are charged a 15% restocking fee.

**shipping estimates may vary based on product selection and destination and a tracking code will be sent after checkout.

Canadian Customers**

If you are ordering from Canada, additional shipping rates and fees may apply. Please contact one of our representatives for more information. Contact us today!

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75A Black Underwater Urethane Potting Compound – 2 Quart Kit

Features:

Specifications:

Canadian Customers**