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Select all	Attribute	Value
	Brand	SKF
	Product Type	Ring Seal
	Sub Type	V-Ring Seal
	Material	Nitrile Rubber (NBR) with Steel Element
	Inside Diameter	20mm
	Outside Diameter	39.5mm
	Colour	Black
	Thickness	10.8mm
	Standards/Approvals	No

	Select all
	Brand SKF
	Product Type Ring Seal
	Sub Type V-Ring Seal
	Material Nitrile Rubber (NBR) with Steel Element
	Inside Diameter 20mm
	Outside Diameter 39.5mm
	Colour Black
	Thickness 10.8mm
	Standards/Approvals No

Datasheet - TSN 505 A

SKF Ring Seal, 20mm Inside Diameter, 10.8mm Thickness - TSN 505 A

This ring seal is a V‑ring style sealing element designed to protect rotating shafts from fluid and contaminant ingress in industrial settings. Constructed from a rubber compound bonded to a metallic insert, it provides a resilient contact lip that maintains axial sealing under shaft movement and torque loads while being suited to standard shaft interfaces.

Features and Benefits:

• Nitrile rubber body offers chemical resistance and sealing resilience
• Steel element provides structural support and secure mounting
• V‑ring profile accommodates axial shaft movement without leakage
• Black material minimises visible wear and contamination

Applications

• Suitable for sealing shafts in rotating machinery
• Used with industrial gearboxes to exclude lubricants
• Ideal for retrofit sealing in maintenance replacements
• Can be used for protecting bearings from external contaminants

What is the internal diameter compatibility for shaft fitment?

The seal is designed to fit shafts with a 20 mm inner diameter interface.

What external space is required for installation clearance?

The required outside clearance corresponds to a 39.5 mm external envelope.

How thick is the sealing element for axial installation depth?

The component has a 10.8 mm material thickness for axial accommodation.

What are the constituent materials of the seal construction?

The sealing lip is nitrile rubber and it is reinforced with an internal steel element.

SKF Nitrile Rubber (NBR) with Steel Element V-Ring Seal Ring Seal, 20 mm ID, 39.5 mm OD

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