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RS PRO Nitrile Rubber (NBR) Bonded Seal Bonded Washer 18.7 mm ID 26 mm OD 1.5 mm Thick 689-552
Specifications
| Country of Origin | United Kingdom |
|---|---|
| Brand | RS Pro |
| Material | Nitrile Rubber (NBR) |
| THICKNESS | 1.5mm |
| Model | 689-552 |
| Outside diameter | 26mm |
| Maximum Operating Temperature | 80°C |
| Hardness | Shore 70 |
| Sub Type | Bonded Seal |
| Inside Diameter | 18.7mm |
| Minimum Operating Temperature | -10°C |
| Standards/Approvals | CE, cUR, UR |
Key Features
- Constructed with a metal annulus bonded to nitrile rubber for durability.
- Designed for sealing under bolt heads and threaded pipe couplings.
- Compatible with mineral-based hydraulic fluids and engine lubricating oils.
- Operating temperature range from -10°C to 80°C for versatile use.
- Features Shore 70 hardness for secure sealing performance.
- Meets CE, cUR, and UR standards for quality assurance.
- Commonly used in automotive, plumbing, aerospace, and general engineering applications.
- Available in metric and BSP-based Imperial sizes for broad compatibility.
Product Description
RS Pro 689-552 Nitrile Rubber (NBR) Bonded Seal is a high-quality bonded washer featuring a metal annulus bonded to a trapezoidal cross-section nitrile rubber elastomeric ring. It is engineered for reliable sealing performance in both high and low-pressure ports on fluid systems that use mineral-based hydraulic fluids or engine oils.
The bonded seal washer has an inside diameter of 18.7 mm, outside diameter of 26 mm, and a thickness of 1.5 mm, providing an effective seal under bolt heads, threaded components, and pipe couplings. The nitrile rubber material offers excellent chemical resistance and durability, suitable for maintaining fluid containment in various industrial applications.
Operating temperature ranges from -10°C to 80°C, and the seal has a Shore 70 hardness rating, ensuring resilience and long service life. It complies with industry standards including CE, cUR, and UR certifications, ensuring quality and safety in demanding environments.
Typical applications of RS PRO bonded seals include automotive servicing, plumbing installations, aerospace manufacturing, and general engineering tasks. Its versatility and range of sizes cater to both metric and BSP-based Imperial fittings, making it suitable for replacing old seals or installation in new equipment.
Metal annulus with nitrile rubber bonded ring for secure sealing. Compatible with mineral-based hydraulic fluids and lubricants. Durable construction suited for high and low-pressure systems. Certified to CE, cUR, UR standards for compliance.
Applicable in automotive, plumbing, aerospace, and engineering fields.
This bonded seal washer is part of the RS PRO range, known for rigorous testing and trusted quality, suitable for industrial, mechanical, and HVAC service and maintenance operations.
Explore the full range of RS Pro mechanical components and fluid power supplies on EnvMart to find compatible seals, O-rings, and washers for your application needs.
Explore more products in our Seals & Gaskets category.
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Frequently Asked Questions
This bonded seal has an inside diameter of 18.7 mm, an outside diameter of 26 mm, and a thickness of 1.5 mm.
The operating temperature range for this bonded seal is from -10°C to 80°C.
It is constructed from nitrile rubber (NBR) with a metal annulus bonded to it for enhanced durability.
This model has a Shore hardness rating of 70, ensuring secure sealing performance.
It is compatible with mineral-based hydraulic fluids and engine lubricating oils.
This product meets CE, cUR, and UR standards for quality assurance.
Typical applications include automotive servicing, plumbing installations, aerospace manufacturing, and general engineering tasks.
Yes, it is engineered for reliable sealing performance in both high and low-pressure ports on fluid systems.
The RS PRO bonded seal is manufactured in the United Kingdom.
Yes, it is available in both metric and BSP-based Imperial sizes for broad compatibility.
The metal annulus provides added durability and helps ensure a secure seal under bolt heads and threaded components.
This product is classified as a bonded seal.
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