Rubber Bonded Sealing Washers

Leak-Proof, Durable Fastening Solutions

Rubber Bonded Sealing Washers, also known as Bonded Washers or Sealing Washers, are engineered to create a secure, leak-resistant seal between fasteners and surfaces. Featuring a dual-component construction — a durable metal backing (typically galvanized steel or stainless steel) and a flexible rubber seal (EPDM or neoprene) — these washers are ideal for waterproofing, vibration damping, and corrosion protection in industrial, roofing, and plumbing applications.

  • Dual Material Design: Combines metal for strength and rubber for sealing flexibility

  • Superior Leak Protection: Prevents ingress of water, dust, and air

  • Vibration Dampening: Rubber layer absorbs shocks, protecting the fastened surface

  • Corrosion-Resistant: Ideal for use in outdoor and corrosive environments

  • Excellent Weather Resistance: Maintains performance in extreme temperatures and UV exposure

  • Versatile Compatibility: Works with metal, plastic, glass, or wood surfaces

Attribute

Details

Metal Material

Galvanized Steel / Stainless Steel

Rubber Material

EPDM / Neoprene / Silicone (on request)

Standard Sizes

M4 to M24 (custom sizes available)

Outer Diameter

As per DIN 7603 / DIN 125 standards

Color

Black / Grey Rubber (standard)

Temperature Range

-40°C to +120°C (depending on rubber type)

Applications

Roofing, HVAC, automotive, marine, plumbing

  • Metal sheet roofing and cladding

  • Pipe and plumbing sealing

  • Solar panel mounting systems

  • Automotive assemblies

  • Industrial machinery

  • Electrical enclosures and outdoor equipment

Q1. What is a rubber bonded sealing washer used for?
It is used to seal joints and prevent leaks where a bolt or screw is fastened — especially in roofing, plumbing, and HVAC systems.

Q2. Can these washers be used outdoors?
Yes, they are designed to resist weather, UV exposure, and corrosion — making them ideal for outdoor use.

Q3. What’s the difference between EPDM and Neoprene washers?
EPDM offers excellent weather and UV resistance, while Neoprene has better resistance to oils and chemicals.

Q4. Are custom sizes or materials available?
Yes, we offer custom sizes, materials, and packaging upon request for bulk orders.

  • Manufactured to meet international quality standards

  • High-performance sealing even under pressure

  • Available in a wide range of sizes and materials

  • Trusted by professionals in construction, marine, and industrial sectors

  • Fast shipping & bulk order discounts