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Copper provides a tighter seal and greater heat endurance than steel and rubber washers.
Widely applied in the flange and the connection of the chemical plant.
Copper has good electrical and thermal conductivity, excellent plasticity, easy to hot pressing and cold pressure processing.
Copper has good electrical and thermal conductivity, excellent plasticity, easy to hot pressing and cold pressure processing.
Copper is a soft metal with a reddish purplish color. Good ductility, high thermal and electrical conductivity.
Automatic production process one molding, to ensure product processing accuracy, fine appearance without burrs.
It can effectively prevent the gasket from disintegrating, medium erosion, and also improve the pressure resistance.
Camden
July 10, 2025
I use these for the washers on the oil drain plug of my 1972 Volkswagen Type 4 Motor. They fit perfectly and deform comparably to more expensive washers.Its a ring of copper, so there's only so much to say. They do a good job and are actually the dimensions advertised! I will be buying more when I run out in 10 years!
JB
July 4, 2025
What can one say about copper washers? They work as advertised!
S&C
June 13, 2025
Needed these for my car. I usually get them for about 50 cents a piece at the dealership but this saves me time and money. Haven’t tested them yet for leakage but looks like they would fit.
Jessica Morsy
June 9, 2025
They are copper crush washers and the perform exactly as expected.
Andrew J
May 15, 2025
For those looking for oil drain plug crush washers for a Mercedes (in my case in particular a W204 C63), these are the ones.I ordered another set by searching for "Mercedes oil pan washer" and received a bunch that were too big. They were 14 ID x 20 OD x 1.5 thick which is not the right size for my car at least.These will fit the oil pan drain plug as well as the oil cooler drain plug. The oil cooler drain plug doesn't even crush with as little torque as it needs, so I reused mine without issue when I found I had the wrong size, but it's still not a bad idea to replace them.
Customer
April 30, 2025
A must when playing with my Bosche CIS fuel injection system on my Porsche 911sc
Marilyn Roosen
April 10, 2025
Arrived quickly and is an amazing price!!
Slipstreampilot
April 9, 2025
This is a much less expensive, exact fit replacement for the differential fill plug crush washer for all Honda S2000s. The Honda OEM part number: 90402-PCZ-003. The retail for one crush washer from the dealership is currently $2.74, but will only go up. There are enough of these washers in this product offering to last the entire life of multiple S2000s - so buy these and share with a S2000 friend, or two.For note: the copper color of this washer is lighter than the OEM washer, indicating less copper content. I also noticed the washer was ever so slightly more resistant to crushing when compared to OEM (OEM is slightly ‘softer’). It was nothing significant and won’t impact the seal. I cut through one of the washers to confirm it wasn’t plated to look like copper, and the material is in fact solid and not plated. Torque for both the fill and drain plug is 33 lb Ft. I personally set my torque wrench to 35 lb ft.
Christian Labreche
March 8, 2025
As described, good quality
Patrick Salerno
February 7, 2025
Nice
Brian
January 31, 2025
Good product
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