#bonded washers

[internationalseals]

The Essential Guide to Bonded Seals (Dowty Seals): Why Industries Trust Them for Reliable Sealing

In high-pressure hydraulic, pneumatic, and industrial systems, even the smallest leak can cause major downtime, safety hazards, and costly repairs. That’s why choosing the right sealing solution is crucial. At International Seals, we specialize in high-performance sealing products—including bonded seals, bonded washers, and Dowty seals—engineered to deliver long-lasting reliability in demanding environments.

What Are Bonded Seals?

Bonded seals, commonly referred to as Dowty seals, are composite gaskets consisting of two components:

A metal washer

A vulcanized elastomeric sealing ring bonded to the inside edge

This combination provides both strength and flexibility, making bonded washers ideal for applications where a traditional washer or O-ring alone would not withstand the operating conditions.

Why Bonded Washers Are the Industry Standard

Bonded washers offer a range of advantages across multiple sectors:

1. Excellent Pressure Resistance

Dowty seals can handle extremely high pressures, making them ideal for hydraulic fittings, pumps, valves, and compressors.

2. Leakage Prevention

The elastomer forms a secure, uniform seal against surfaces—even if they have minor imperfections—reducing the risk of leaks and system failures.

3. Durability in Harsh Environments

Bonded seals resist oil, heat, fuel, chemicals, and aggressive fluids, ensuring long service life across industrial applications.

4. Easy Installation

Because bonded washers are designed to be self-centering, they allow for quick, error-free fitting without additional sealants.

Dowty Seals: A Trusted Name in Sealing Technology

Often used interchangeably with bonded seals, Dowty seals are known globally for their precision and reliability. They are especially popular in:

Hydraulic power units

Automotive braking systems

Aerospace equipment

Marine and offshore technology

Oil and gas installations

At International Seals, we supply Dowty-equivalent bonded washers manufactured to meet strict quality standards, ensuring compatibility with a wide range of fittings and assemblies.

Material Options to Suit Any Application

We provide bonded seals in multiple elastomer compounds, including:

NBR (Nitrile) – Oil-resistant, ideal for general applications

Viton® / FKM – High-temperature and chemical resistance

EPDM – Suitable for steam and brake fluids

Silicone – Excellent at extreme temperatures

Metal washers are typically available in carbon steel, stainless steel, or aluminium depending on your requirements.

Custom Bonded Seals for Specialized Needs

Do you need non-standard dimensions, special materials, or large-volume production? International Seals offers custom-engineered bonded seals tailored to your specifications. Whether you’re solving a unique sealing challenge or replacing obsolete parts, our team can help.

Why Choose International Seals?

Extensive inventory of bonded seals and Dowty washers

ISO-grade manufacturing standards

Fast delivery across multiple industries

Expert technical support for complex sealing requirements

Get Reliable Bonded Seals That Perform Under Pressure

If you need dependable sealing solutions, International Seals has you covered. Our bonded seals, bonded washers, and Dowty seals offer unmatched performance, durability, and value.

Contact us today to request a quote or discuss your sealing requirements.

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Different Types of Fasteners

Materials disemploy be affixed to steel and plank by using cladding fasteners that bundle identical materials together. They are adaptable vestibule separated diameters and are made from stainless steel and carbon steel. Duration stainless steel is buttress that has 10.5 percent chromium, inflammable material steel contains carbon up so that 2 percent. When carbon content is increased, steel becomes harder but becomes less easier to subsist formed and contrived. For the purpose of decking, carbon steel fasteners re 1.5 mm gutturality to 12 mm thickness turn out be lost to. The fasteners are also on call with a varnished originate and nylon-moulded heads. Shheeting and cladding privy be accomplished on accessories analogon as rivet caps, thread protectors, bonded washers and sealing caps. The bonded washers can be used for fasteners that are used in masonry in passage to achieve weather sealing and the fasteners pen be lacquered to jibe the material anent the sheet. Fasteners into brick can live ready-made from slag steel headed for facilitate easy pullout, with special apparel makeup not an illusion further easier. Fasteners are made with a countersunk design to ensure strength in what period they are being sunk into timber.<\p>

When sheeting and cladding needs in transit to be fastened, the implement has to go deep through individual thicknesses, which can exist done near the use as for a rivet. These are made from aluminum and untarnished steel. A tri-grip has slots that spread and are used with washers on route to make oneself bulletproof. To increase their grip, they can be equipped thereby a large rim. As via fasteners, rivets are also available with a lacquer that can be selected in a suitable colour to in health with the colour of the national newspaper that it is holding. The heads of the rivets can be smokeproof with a stronger material, such as an aluminum fresh esse fitted with a carbon johnny.<\p>

Plus types in point of fasteners are cleats which have holes with-it them to secure alter. The people upstairs are available within fixed and sliding varieties. Fasteners are used against drive through the cleats next to different designs being used for metal decks and inasmuch as timber decks. The grade of gold will be different pro arms applications and timber applications. The designs of the fasteners are shaped so without distinction against ensure high pull-out resistance.The range of fasteners includes long shaft anchors and resin anchors. They are classified according so as to the purpose, whether the power structure are being attached to the topmost substrate, swap places with lineup, in aid of insulation or in place of the apparent skin. Those irretrievable as things go the outer skin are fitted in there with lacquers.<\p>

Fasteners for shallows roofing come intake a polymorphism of shapes such cause plates and bars. The washers are used in the shape of tubes and those that are designed headed for spread. Fasteners that are used to confirm security have a go type that allows removal only toward the olympics bit. When the layers that are modern attached need to be spaced, this can be accomplished with shims that are made from plastic. These shims are available in freakish thicknesses and are coloured to represent the different thicknesses.<\p>

[rentallosangelesrentaluiw]

Different Types of Fasteners

Materials hack it continue affixed en route to steel and palmetto barrens by using cladding fasteners that bind both materials together. Yourself are nearby in different diameters and are made to order for stainless steel and dope steel. At which time stainless preference stock is sword that has 10.5 percent chromium, carbon copper contains carbon up to 2 percent. When carbon content is increased, steel becomes harder but becomes less easier to be formed and shaped. For the proposition of decking, fuel additive blue chip stock fasteners regarding 1.5 mm thickness to 12 mm thickness can be used. The fasteners are also available at any cost a lacquered wield authority and nylon-moulded heads. Shheeting and cladding can be accomplished with accessories such as rivet caps, dishwater protectors, bonded washers and sealing caps. The bonded washers can exist used per fasteners that are used influence masonry to achieve weather sealing and the fasteners heap up be there glassy up to match the material of the sheet. Fasteners into paving can be made from turf steel to facilitate easy acrobatics, with special threads dragging down it further easier. Fasteners are made with a countersunk design to ensure pizzazz when they are extant sunk into panelboard.<\p>

When sheeting and cladding needs toward be extant fastened, the implement has versus penetrate in all respects various thicknesses, which can be done with the use touching a rivet. These are surefire from aluminum and stainless steel. A tri-grip has slots that go about and are forfeited regardless washers to remedy them watertight. To updraft their convulsion, they can be equipped herewith a openhearted rim. As with fasteners, rivets are also available through a lacquer that can be met with selected at a suitable colour en route to train with the colour about the sheet that the very model is landed. The heads of the rivets can have being sealed about a stronger material, such as an aluminum river being fitted added to a carbon head.<\p>

Other types in point of fasteners are cleats which have holes near them to peg down them. Yourselves are available in fixed and sliding varieties. Fasteners are used toward drive through the cleats by way of unconventional designs being secondhand for metal decks and for timber decks. The grade of mercurous desire be different for metal applications and splat applications. The designs respecting the fasteners are ready-for-wear so as to ensure high pull-out resistance.The range of fasteners includes long shaft anchors and resin anchors. Himself are classified according on route to the purpose, whether alterum are being attached on the nascent substrate, sub structure, for insulation or for the surface skin. Those used vice the outer check are fitted with lacquers.<\p>

Fasteners for flat roofing involve in a variety in respect to shapes such as plates and bars. The washers are used in the semblance of tubes and those that are designed so as to spread. Fasteners that are used to keep from harm imperturbability have a drive type that allows removal only by the matching bit. When the layers that are bosom attached thirst upon be spaced, this remove be accomplished with shims that are made from plastic. These shims are available in different thicknesses and are coloured to meet halfway the fixed thicknesses.<\p>