Product page
Hydraulic seal SKF SIL 70X85X12.5
- Manufacturer Part Number
- SIL 70X85X12.5
- Brand
- SKFOfficial brand
- Category
- Seals
- Subcategory
- Hydraulic seals
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Request your quote via WhatsApp or email, with the quantity and time frame you need.
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Description
SKF SIL 70X85X12.5 is a hydraulic seal reference, within Seals. Request a quote for SIL 70X85X12.5 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
SKF SIL series seals are rod seals for hydraulic cylinders, with a U profile. They are housed in the cylinder head and seal against the rod as it extends and retracts, preventing pressurized oil from escaping outward. The designation indicates the dimensions in millimeters: rod, housing and seal height.
A rod seal works under different conditions than a rotary shaft seal: the movement is reciprocating, the pressure is high and the seal must leave a minimal oil film to lubricate without dripping. Therefore, the profile and material are selected according to the pressure, rod speed and fluid temperature.
When replacing it, it is advisable to inspect the rod: a scratch or pit in the chrome destroys the new seal within a few hours. The wiper and guide rings are also inspected, and are usually replaced in the same set.
For mounting, avoid passing the seal over threads or sharp edges without protection, and lubricate with the same system fluid. A seal nicked during mounting leaks from the first cycle.
To request a quote, send us the complete SIL designation or the three housing dimensions via WhatsApp, and if possible a photo of the old seal.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- What do the numbers of a SIL seal indicate?
- The dimensions in millimeters of the rod, the housing and the seal height.
- Should I replace only the rod seal?
- It is advisable to also inspect and replace the wiper and guide rings, which work in the same assembly.
- How do I request a quote?
- Send us the designation or dimensions via WhatsApp. We will reply shortly.

