MPN

RS PRO Nitrile Rubber Bonded Seals Washer, 13.74mm Bore, 20.57mm Outer Diameter

RS Stock No.:: 689-473
Brand:: RS PRO

RS PRO Nitrile Rubber Bonded Seals Washer, 13.74mm Bore, 20.57mm Outer Diameter

Bulk discount available

Subtotal (1 bag of 50 units)*

£19.93

(exc. VAT)

£23.92

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

99 unit(s) ready to ship
Plus 31 unit(s) ready to ship from another location
Plus 55 unit(s) shipping from 13 October 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Bag(s)	Per Bag	Per unit*
1 - 4	£19.93	£0.399
5 - 9	£19.53	£0.391
10 - 24	£19.14	£0.383
25 +	£18.74	£0.375

*price indicative

Alternative

This product is not currently available. Here is our alternative recommendation.

RS PRO Fluorocarbon Elastomer O-Ring O-Ring, 15.54mm Bore, 20.63mm Outer Diameter

RS Stock No.: 129-094

1 Bag of 50

£13.54

(exc. VAT)

£16.25

(inc. VAT)

RS Stock No.:: 689-473
Brand:: RS PRO

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	RS PRO
	Type	Bonded Seals
	Material	Nitrile Rubber
	Inside Diameter	13.74mm
	Outside Diameter	20.57mm
	Thickness	2.03mm
	Minimum Operating Temperature	-10°C
	Maximum Operating Temperature	+80°C

	Select all
	Brand RS PRO
	Type Bonded Seals
	Material Nitrile Rubber
	Inside Diameter 13.74mm
	Outside Diameter 20.57mm
	Thickness 2.03mm
	Minimum Operating Temperature -10°C
	Maximum Operating Temperature +80°C

RS PRO Nitrile Rubber Bonded Seals

These RS PRO seals comprise a metal annulus to which a medium nitrile elastomeric ring of trapezoidal cross-section is bonded. They provide high and low pressure sealing for ports on fluid systems where mineral based hydraulic fluids or mineral based engine lubricating oils are present.

Features and Benefits:

Available in both metric and BSP-based Imperial sizes
Hardness: 1 RHD 85-95
Seals come in a range of sizes
Reliable in high pressure applications

Typical Applications:

Seals are used in various fields and industries including:
Automotive
Plumbing
Aerospace
General engineering.
Bonded seals are a type of washer and are available in various materials and standard sizes. They are suitable for sealing under the heads of bolts and threaded components, pipe couplings and connector applications where excellent contact is needed foe sealing gases, oils and fluids.

FAQs
Types of Seals and O-rings
Seals and O-rings come in various materials suited to different purposes. Some have a high temperature tolerance for use in both hot and cold applications, while others are made to be chemically resistant for use in lab or test equipment. Available in a wide range of sizes both in single size packs or in seal and O-ring kits for general maintenance. Sizes vary between seal and ring types both in diameter and thickness, these variations help provide an exact and precise seal to protect the joint. Both Metric and Imperial sizes are available to replace new and old seals and rings whether maintaining modern parts or older machines, engines and other mechanical parts.

Why RS PRO?
RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

Note

The width (or thickness) quoted for the self-centralising bonded washers relates to the thickness of the fibre part of the washer.

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