Best M18 Sealing Washers in 2026

Material: 100% copper, high conductivity, corrosion resistant copper washer assortment

150PCS 15 Popular Sizes Sealing Washers Kit, great for sump plugs, water, fuel, and hydraulic fittings

150 pcs solid copper sump plug washer set. All contained in a compact and see through compartmented plastic case, convenience to use.

★ Tip: These washers NOT compatible with 3/4" garden hose fittings sealing.

★ This product has 3/8-inch inner diameter, 3/4-inch outer diameter, 1/8 inch thickness.

★ Constructed of a strong and durable silicone, construction better sealing, meaning it was built for longevity.

【✔】 High Quality Stainless Steel Neoprene EPDM Bonded Sealing Washers Assortment Set

【✔】 Made of 304 Stainless Steel Material, stainless steel has a high resistance to rust and corrosion and may be mildly magnetic

【✔】 Set Includes 6 Most Used Sizes, Works with #6, #8, #10, #12 Size Screws, 【Please See Picture 2 for Specific Dimensional Size】

Sufficient supplies: one package includes many plastic washers in transparent color, enough quantity to meet daily use and replacement

Reliable material: flat washer gasket is made of vinyl material, sturdy, not easy to break or age, wear-resistant, with strong sealing, and can be applied for a long time

Dimension: the outside diameter is 3/4 inch (19 mm), the inside diameter is 1/4 inch (6 mm), thickness is 1/16 inch, this clear washer is designed to work with 3/4 inch (19 mm) standoff cap assemblies

🥰【High quality and durable material】URLWALL Flat Washer Set is made of plastic nylon material, smooth without burr. Features: Insulation, heat insulation, wear-resisting corrosion resistance, long service life.

🥰【Full size】It contains 500 Pieces / M2, M2.5, M3, M4, M5, M6, M8, M10 flat wahers.8 different sizes of nylon flat spacer, can meeting your different needs.

🥰【Good protection】Metric sealing NYLON washers mainly used to reduce pressure and friction, prevent leakage, isolate, loosening or disperse pressure.Also to increase contact area, reduce pressure and protect parts and screws.

High Quality:Bonded seal made of zinc plated metal + rubber,high pressure resistant,oil resistant,sturdy and durable for long using life.

Multi size:156pcs bonded seal set includes 10 different metric size, M6-12PCS, M8-12PCS, M10-12PCS, M12-20PCS, M14-20PCS, M16-20PCS, M18-20PCS, M20-20PCS, M22-10PCS, M24-10PCS.

Stylish Desigh:Bonded seal consists of a metal ring and a rubber gasket. The metal washer ensures that the components to be connected are reliably and securely held, rubber ring generally uses oil resistant NBR rubber.

Package Content: You will receive 30pcs clear plastic washer gaskets, packed in a plastic case for easy storage. Sufficient for your daily home use and replacement.

Product Size: Each plastic flat washer measures approximately 18mm/0.7inch in outer diameter, 6mm / 0.24inch in inner diameter and 2mm / 0.08inch in thickness. Standard size for 3/4inch standoff cap components.

Reliable Material: The clear flat washers are made of quality PVC material, sturdy, wear resistant and durable. They have excellent sealing performance and compressive ability, not easy to break, which can provide a long-term service time.

Quality material: Made of metal and rubber, good sealing. high pressure resistant, oil resistant, sturdy and durable for long using life

Unique design: Bonded seal consists of a metal ring and a rubber gasket. The metal washer ensures that the components to be connected are reliably and securely held, rubber ring generally uses oil resistant NBR or fluorine rubber.

The assortments contain the following sizes: M6---20pcs,M8---20pcs,M10---20pcs, M12---20pcs, M14---20pcs, M16---20pcs, M18---15pcs, M20---15pcs

Sufficient Supplies: Include 100 plastic washers gaskets in transparent color, enough quantity to meet daily use and replacement.

Reliable Material: Flat washer gasket is made of vinyl material, sturdy, not easy to break or age, wear-resistant with strong sealing, can be applied for a long time

Dimension: The flat washer gasket thickness is 1/16 inch, outside diameter is 3/4 inch, the inside diameter is 1/4 inch,this clear washer is designed to work with 3/4 inch standoff cap assemblies.

Kind Reminder: to avoid an unpleasant shopping experience, please note that confirm the required size and material before purchasing.

Dimension: the outside diameter is 3/4 inch (19 mm), the inside diameter is 0.236 inch (6 mm), thickness is 1/16 inch, this clear washer is designed to work with 3/4 inch (19 mm) standoff cap assemblies.

Widely Applicable: with nice an effect of repairing shower handles, these washer spacer can nicely replace worn washers on glass shower door handles/ towel bars, reducing costs and saving time and effort.

Material: The plaster washers are crafted with steel and with zinc plated, which is sturdy and well made, and can serve you for a long time.

Practical plaster washer: The plastic plaster repair rings work well to fix the plaster against the lath, which can prevent or control sagging and cracking from expanding, helping your ceilings and walls maintain in good condition.

Easy to Store: Small size won't occupy much space. Lightweight plaster repair kit allows the metal plaster washers to easily carry or store in a tool case or drawer.