Nitrile Washers

Nitrile Washers

At Advanced Seals & Gaskets Ltd (ASG), we manufacture high-quality nitrile washers tailored to customer requirements. Using solid nitrile rubber (NBR), our washers are cut from precision-processed rolls or sheets to deliver reliable sealing and performance in demanding environments.

NBR rolls typically measure 1.4m wide and 10m long, with thicknesses starting at just 1mm, making them ideal for custom washer production. Our expert team uses advanced equipment—including kiss-cut presses, travelling head presses, and CNC oscillating knives—to produce washers in any size, thickness, or volume required. Whether you need one-off prototypes or high-volume batch runs, ASG provides cost-effective, fast-turnaround nitrile washers manufactured to exact specifications.

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Product Enquiry

For information on Nitrile Washers please complete the following quick enquiry or call us on +44(0)1384 252555.






    Key Characteristics of Nitrile Rubber

    • Colour: Black (also available in white or blue for food-grade applications)

    • Shore Hardness: 40–70 Shore (other hardnesses available)

    • Resistances: Oil, petrol, fuel, water, abrasion, and wear

    • Temperature Range: -20°C to +70°C

    • Thickness: 1mm to 25mm

    • Optional Grades: BS2751, food-grade, metal-detectable nitrile

    Full technical data sheets are available on request.

    Product Specification Sheet

    What Are Nitrile Washers?

    Nitrile washers are flat, ring-shaped components with an inner diameter (ID), outer diameter (OD), and thickness cut from sheets or rolls of nitrile rubber. These washers are widely used in industrial, automotive, and mechanical applications for:

    • Creating airtight and liquid-tight seals

    • Acting as spacers for mechanical fasteners

    • Distributing loads evenly across surfaces

    • Reducing vibration and noise

    • Providing abrasion resistance in machinery

    Nitrile rubber (NBR) is a synthetic elastomer made from acrylonitrile (ACN) and butadiene copolymers. Available in different hardness levels (40° to 70° Shore), nitrile offers an excellent balance between flexibility and durability, making it a top choice for sealing components exposed to oils, fuels, and chemicals.

    Why Use Nitrile Washers?

    Solid nitrile rubber washers are valued for their sealing strength, resilience, and oil resistance. Key benefits include:

    • Airtight and watertight sealing against gases, dust, and fluids

    • Resistance to petrol, mineral and vegetable oils, and many acids/alkalis

    • Strong tensile strength and abrasion resistance for long service life

    • Flame retardancy for added safety in industrial settings

    • Consistent performance across a working range of -20°C to +70°C

    Nitrile rubber’s unique resistance to “swelling” when exposed to oils and fuels ensures these washers maintain their sealing performance over time—making them ideal for oil seals, gaskets, flanges, and hydraulic applications.

    Different Grades of Nitrile Washers

    ASG works with a wide network of suppliers to provide nitrile washers in a range of specialist grades:

    1. BS 2751 Nitrile (British Standard)
    • Premium-grade nitrile with superior elongation, tensile strength, and durability
    • Broader temperature range: -30°C to +110°C
    • Available in hardnesses of 40°–80° Shore 
    2. Blue Metal-Detectable Nitrile
    • Manufactured with additives detectable by metal scanners
    • Excellent tear and abrasion resistance
    • Ideal for food, beverage, and pharmaceutical industries 
    3. Food-Quality (FDA) Nitrile
    • Available in white or blue
    • Conforms to EC & FDA regulations
    • Resistant to vegetable oils, animal fats, fish oils, and greases
    • Perfect for use in food and pharmaceutical processing 

    Benefits of Nitrile Washers

    • Excellent resistance to oils, fuels, and chemicals

    • Long-lasting durability with strong abrasion resistance

    • Waterproof and gas-tight sealing

    • Versatile across automotive, industrial, and food-grade applications

    • Available in multiple hardnesses and grades for specific requirements

    • Can be manufactured into custom shapes, sizes, and finishes

    Applications of Nitrile Washers

    Nitrile washers are used across many industries, including:

    • Automotive & Transport: Oil seals, engine gaskets, hydraulic systems

    • Industrial Machinery: Noise and vibration dampening, abrasion protection

    • Construction: Weather-resistant seals and spacers

    • Food & Pharmaceutical: FDA-approved and metal-detectable washers for contamination prevention

    Contact ASG Today
     Looking for custom nitrile washers for your business? Call us on 01384 252555 or use our online enquiry form for expert advice, samples, and quick quotations.

    Have a Question Nitrile Washers

    Please contact us using the form below or by calling us on +44(0)1384 252555.