H2.5mm Flat Rubber Gasket M2–M42 NBR VMQ FKM Sealing Washer
H2.5mm Flat Rubber Gasket M2–M42 NBR VMQ FKM Sealing Washer
Details
H2.5mm Flat Gasket M2–M42 | Nitrile, Silicone & Fluorine Rubber Sealing Washers
Keep your assemblies leak-free and well-protected with these precision-engineered flat rubber gaskets. Available in a wide range of bolt sizes from M2 to M42, these sealing washers are manufactured in three high-performance rubber compounds — Nitrile (NBR), Silicone (VMQ), and Fluoroelastomer (FKM) — so you can match the perfect material to your application's demands.
Made in Mainland China.
Why Choose These Flat Gaskets?
- Multiple Material Options: NBR (Nitrile) for oil and fuel resistance; VMQ (Silicone) for wide temperature range performance; FKM (Fluorine/Viton) for chemical and extreme heat resistance.
- Wide Size Range: Covers M2 through M42 bolt sizes — one product family for virtually every project.
- H2.5mm Thickness: Standard flat profile creates a reliable, uniform seal under compression.
- Waterproof Sealing: Effectively prevents water, moisture, oil, and fluid ingress in mechanical joints.
- Wear & Abrasion Resistant: Durable rubber construction maintains shape and sealing performance over repeated cycles.
- Vibration Dampening: Flexible rubber absorbs vibration and micro-movement, protecting threaded connections from loosening.
- Standard Dimensions: Designed to meet standard engineering tolerances for easy drop-in replacement.
Material Guide
| Material | Code | Best For |
|---|---|---|
| Nitrile Rubber | NBR | Oil, fuel, hydraulic fluid resistance |
| Silicone Rubber | VMQ | Wide temperature range, food-grade use |
| Fluoroelastomer | FKM | Harsh chemicals, high heat environments |
Specifications
- Thickness: H2.5mm
- Bolt Size Range: M2 – M42
- Shape: Flat Gasket / Sealing Washer
- Materials Available: NBR, VMQ, FKM
- Standard: Standard dimensions
- Features: Oil resistant, wear resistant, waterproof, vibration dampening
- Brand: Ouling
- Origin: Made in Mainland China
Custom Orders Welcome
Need a specific size or bulk quantity? Our store offers customized flat gasket and O-ring services for large orders. Contact our customer service team for detailed sizing options and custom quotations — we carry many additional sizes not listed here.
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Frequently Asked Questions
Q: What is the difference between NBR, VMQ, and FKM rubber gaskets?
A: NBR (Nitrile) flat gaskets excel at resisting oils, fuels, and hydraulic fluids, making them ideal for automotive and machinery use. VMQ (Silicone) gaskets perform across a wide temperature range and are often used in food-safe or general-purpose applications. FKM (Fluoroelastomer/Viton) gaskets offer superior resistance to aggressive chemicals and very high temperatures, suited to demanding industrial environments.
Q: What size range do these H2.5mm flat gaskets cover?
A: These flat sealing gaskets are available from M2 up to M42, covering a very broad range of bolt and fastener sizes. If you need a size not listed, please contact our customer service team — we stock many additional sizes and offer custom production for large orders.
Q: Are these flat rubber gaskets waterproof and oil resistant?
A: Yes. All material variants (NBR, VMQ, FKM) provide effective waterproof sealing, preventing moisture and fluid ingress at bolted joints. NBR and FKM variants additionally offer strong oil and chemical resistance for more demanding applications.
Q: Can I order custom sizes or bulk quantities?
A: Absolutely. The store offers customized flat gasket and O-ring manufacturing services for bulk or non-standard size orders. Please reach out to customer service with your required inner diameter, outer diameter, thickness, and material preference for a tailored quote.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.