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

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
237
Material
Silicone
Package Information
Jar

💧Waterproof seal - corrosion proof

🔥570°F flash point - heat resistant

🖌️Built-in applicator brush - precision

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Details

Brand
Mission
Item Weight
8 Ounces
Liquid Volume
237

Description

🛠️ Seal the deal with Mission Grease — your gear’s invisible armor!

TRUSTED DURABILITY - Highly rated by off-roaders and pros alike for consistent, long-term protection.
UNMATCHED HEAT RESISTANCE - Withstands extreme temperatures up to 570°F, ensuring peak performance under pressure.
PRECISION APPLICATION BRUSH - Integrated brush lid delivers exact coverage, minimizing waste and mess.
VERSATILE MULTI USE FORMULA - Perfect for spark plugs, brake caliper pins, rubber gaskets, and marine environments.
ULTIMATE WATERPROOF PROTECTION - Seals out moisture and prevents oxidation for long-lasting electrical reliability.

Mission Automotive Silicone Dielectric Grease Paste is a premium 8 oz silicone-based lubricant designed to protect electrical connectors and spark plugs from moisture, corrosion, and voltage leaks. Featuring a high flash point of 570°F and a built-in applicator brush, it offers precise, waterproof sealing ideal for automotive, marine, and electrical maintenance. Trusted by enthusiasts for its durability and versatility, this clear grease extends the life and reliability of critical vehicle components.

Specifications

ASIN	B016E5E59G
Best Sellers Rank	#23,513 in Automotive ( See Top 100 in Automotive ) #12 in Automotive Electrical Greases
Brand	Mission Automotive
Brand Name	Mission Automotive
Container Type	Jar
Customer Reviews	4.8 out of 5 stars 5,046 Reviews
Flash Point	570 Degrees Fahrenheit
Included Components	1
Item Form	Paste
Item Weight	8 Ounces
Liquid Volume	237 Milliliters
Manufacturer	Mission Automotive
Material	Silicone
Model Number	8542064566
Number of Items	1
Package Information	Jar
Part Number	08946
Recommended Uses For Product	Car,Electrical,Windows
Specific Uses For Product	Automotive, Mechanical
UPC	638037142402
Unit Count	8.0 Ounce
Upper Temperature Rating	570 Degrees Fahrenheit

Reviews

B**H

28.05.2023

C**S

14.03.2024

N**1

20.10.2023

F**U

2.12.2025

H**O

13.01.2025

R**S

25.04.2026

D**N

31.07.2020

W**.

20.09.2021

B**D

1.02.2026

Z**D

23.10.2024

L**7

26.07.2022

M**I

27.01.2026

ي**ه

4.10.2025

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