Would this do good to seal a usb port with a usb cord plugged in?

Not sure why you need to seal a USB PORT but I see no reason it wouldnt keep it waterproofed.

Is this stuff good for polyureathane bushings

Yes it is good for polyurethane bushings.....the lube they sell for the bushings is essentially rebranded dielectric grease too.

Has anyone tried this on fishing reel components? Is it light enough?

Definitely! I've been using it from 15 yrs or more... The main purpose, to seal the reel and protect screws from salt; for those that are not stainless I fill the hole with the grease to the top well, every where there is a screw head facing out. And all around the edge and bound surface of the gear cover, anywhere water can sip in! And in the gears, but I would mix it with other type to soften a bit for smooth reeling experience.

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Mission Automotive Silicone Dielectric Grease Paste - 8 Oz Dielectric Grease for Electrical Connectors and Spark Plug Protection - Waterproof Clear Silicone Paste Automotive Greases and Lubricants

Mission Automotive Silicone Dielectric Grease Paste - 8 Oz Dielectric Grease for Electrical Connectors and Spark Plug Protection - Waterproof Clear Silicone Paste Automotive Greases and Lubricants

Product ID: 19409154

Details

Brand
Mission
Item Weight
8 ounces
Liquid Volume
226.8 ml
Material
Silicone
Package Information
Jar

💧Waterproof seal - ultimate corrosion defense

🔥570°F flash point - heat resistant

🖌️Built-in applicator brush - precision spread

R963

Duties & taxes included

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Seal the deal with Mission—where precision meets protection!

WATERPROOF BARRIER - Creates a durable seal that blocks moisture and prevents oxidation for long-lasting electrical integrity.
TRUSTED BY THOUSANDS - Rated 4.8 stars by over 5,000 users, Mission Automotive grease is the pro’s choice for spark plug and connector protection.
PRECISION APPLICATION - Integrated brush lid guarantees mess-free, exact coverage every time—no waste, no fuss.
UNRIVALED HEAT RESISTANCE - Withstands extreme temperatures up to 570°F, ensuring peak performance under pressure.
VERSATILE MULTI SURFACE COMPATIBILITY - Perfectly safe on rubber, plastic, and metal, making it your all-in-one automotive maintenance essential.

Mission Automotive Silicone Dielectric Grease Paste is a premium 8 oz waterproof silicone lubricant designed to protect electrical connectors and spark plugs from corrosion and voltage leaks. Featuring a high flash point of 570°F and a built-in applicator brush, it ensures precise, durable coverage across rubber, plastic, and metal surfaces. Trusted by thousands, it’s engineered for automotive, marine, and electrical applications to extend equipment life and reliability.

Specifications

ASIN	B016E5E59G
Best Sellers Rank	#23,307 in Automotive ( See Top 100 in Automotive ) #14 in Automotive Electrical Greases
Brand Name	Mission Automotive
Compatible Material	Rubber, Plastic, Metal
Container Type	Jar
Customer Reviews	4.8 4.8 out of 5 stars (5,048)
Flash Point	570 °F
Included Components	1
Item Form	Paste
Item Weight	8 ounces
Liquid Volume	226.8 ml
Manufacturer	Mission Automotive
Material	Silicone
Model Number	8542064566
Number of Items	1
Part Number	08946
Recommended Uses For Product	Car,Electrical,Windows
Specific Uses For Product	Automotive, Mechanical
UPC	638037142402
Unit Count	8 Ounce
Upper Temperature Rating	570 °F

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Fantastic and great service. Shipping was faster than expected.

1 week ago

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R963

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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