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100pcs Copper Washer Assortment Kit – M4 to M14 Sealing Rings for Oil Pan, Nuts, and Bolts (With Storage Box)

100pcs Copper Washer Assortment Kit – M4 to M14 Sealing Rings for Oil Pan, Nuts, and Bolts (With Storage Box)

Regular price $85.90
Regular price Sale price $85.90
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Free returns


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Returns

We accept returns within 30 days of delivery. Items must be unworn, unwashed, and returned with original tags attached.

Care Instructions

To preserve the beauty of your dress, we recommend gentle hand washing or dry cleaning. Do not bleach. Hang or lay flat to dry. Steam or iron on low heat if needed.

Shipping

Orders are processed within 1–3 business days.

  • Standard Shipping: 5–9 business days — $3.95
  • Express Shipping: 4–7 business days — $9.95

Delivery times are estimates and may vary depending on your location. Tracking information will be provided once your order has been shipped.

Get a reliable seal and professional finish with this 100-piece Copper Washer Assortment Kit. Designed for oil pan plugs, nuts, bolts, and fluid systems, these washers deliver excellent conductivity, corrosion resistance, and leak prevention. With a range of sizes from M4 to M14, this compact set is a must-have for mechanics, engineers, and DIYers alike.


Key Features

  • 100-piece copper washer kit in assorted sizes

  • Covers M4, M5, M6, M8, M10, M12, M14

  • Durable, corrosion-resistant copper for long-lasting sealing

  • Perfect for oil plugs, engines, automotive systems, and plumbing

  • Comes in a handy labeled plastic storage box

Why Choose Our 100pcs Copper Washer Assortment Kit
These washers outperform rubber or aluminum alternatives in high-heat and high-pressure conditions. They’re reusable, precision-machined, and ensure a tight, leak-free fit every time.

Perfect For

  • Engine oil drain plugs

  • Hydraulic or fuel line fittings

  • Bolted joints requiring a soft seal

  • Workshop, garage, or toolbox use

Care & Maintenance
Keep stored in the labeled box to prevent mix-ups. Clean and inspect before reuse in high-pressure applications.


Seal it right the first time—stock your bench with this essential copper washer kit and get the job done cleanly and confidently.

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100pcs Copper Washer Assortment Kit –...
Regular price $85.90
Regular price Sale price $85.90
Selected Variant Image
100pcs Copper Washer Assortment Kit – M4 to...
Regular price $85.90
Regular price Sale price $85.90

what our customers say about us

4.9

Based on 100+ Reviews

4.9
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  • E
    Emily R.
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    Verified Buyer
    Perfect for a summer wedding
    I wore this to my cousin's wedding and felt amazing all day. The fit was exactly as expected, and I received so many compliments. I ordered my usual size S.
  • O
    Olivia H.
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    Verified Buyer
    Beautiful dress
    Really happy with this purchase. I only wish I had steamed it before trying it on because it arrived with a few wrinkles from shipping.
  • S
    Sarah T.
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    Verified Buyer
    So flattering
    I have a hard time finding dresses that fit my waist properly, but this one was perfect. Very comfortable to wear for several hours.
  • C
    Chloe W.
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    Verified Buyer
    Worth every dollar
    The quality surprised me. The material has a nice weight and doesn't feel see-through at all. I'll definitely order another style.
  • A
    Amanda K.
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    Verified Buyer
    Engagement photo approved
    Bought this for our engagement photos and couldn't be happier. It looked beautiful in natural light and fit perfectly.
  • N
    Nicole B.
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    Verified Buyer
    Runs slightly roomy
    I was between sizes and ordered the larger one. It still looked great, but I probably could have gone with my usual size.
  • H
    Hannah C.
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    Verified Buyer
    Comfortable all evening
    Wore this to a formal dinner and didn't have to adjust it once. It stayed comfortable from start to finish.
  • M
    Megan L.
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    Verified Buyer
    Love the quality
    Beautiful stitching and a really elegant design. It feels much more expensive than it actually is.
  • R
    Rachel S.
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    Verified Buyer
    True to size
    I followed the size chart and ordered a Medium. It fit exactly the way I wanted.
  • A
    Ashley D.
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    Verified Buyer
    Received so many compliments
    Everyone kept asking where I bought this dress. It's simple, elegant, and easy to accessorize.
  • L
    Lauren P.
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    Verified Buyer
    Vacation favorite
    Packed this for my trip to Italy and wore it twice. It's lightweight, comfortable, and photographs beautifully.
  • B
    Brittany G.
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    Verified Buyer
    Lovely dress
    The zipper was a little stiff the first time, but after wearing it once everything worked perfectly. Overall, I'm very happy.
  • K
    Kayla N.
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    Verified Buyer
    Helpful customer service
    I wasn't sure which size to buy, so I contacted support first. They recommended a Small, and it fit perfectly.