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🔧 Seal smarter, last longer — don’t let leaks hold you back!
Bolt Dropper’s 5/16" x 3/4" stainless steel EPDM bonded sealing washers combine UV-resistant EPDM rubber with neoprene backing to deliver a watertight, vibration-dampening seal. Designed for corrosion resistance and precise load distribution, these 100-pack washers are engineered to withstand harsh outdoor conditions and keep your projects leak-free and secure.
J**W
Good
Seem to be good quality as advertised
A**H
Effective seals
Resolved the oil leakage issue on bolts sealing the oil pan on my Model T Ford
J**N
As described
What more detail do you want? This product is as described.
N**M
Bien
Bien
T**L
Just what I needed.
I needed an insulated washer for electric fencing between the staging nail and insulator. Right size and did the job.
W**?
Wrong size
Ordered 3/8 was shipped1/4 look like good quality but not what I needed
J**B
Seal perfectly
I needed these to hold down acrylic sheeting to winterize certain windows in my old house. They are perfect for my needs—they distribute the force of the hold-down screws to prevent cracking the acrylic and the polymer backing makes a complete seal around each mounting hole. Plus, they’re stainless, so no rust stains.
P**Y
Works Great!
Very nice for use on products you don't want marred up from screw heads or lockwashers.
Trustpilot
5 days ago
3 weeks ago