O-ring 13,94x2,62mm

O-ring 42167 with dimensions 13.94×2.62mm is a seal used in the Kranzle pressure washer. The dimensions 13.94mm and 2.62mm correspond to the inch standard AS568 – not metric. This means that when ordering a replacement, an O-ring of "14×2.5mm" or "14×3mm" cannot be used as an approximate equivalent – the difference of 0.06mm in diameter and 0.12mm in cross-section for static seals under the pump's working pressure is significant for both seal integrity and service life.

Application

The O-ring is mounted in a sealing groove between two stationary surfaces as a static seal – compressed in the groove during assembly it forms a barrier against the working fluid. Verify the exact installation position in the pump on the disassembled machine or in the service documentation for the specific Kranzle model – reference number 42167 is a more reliable basis for identifying the installation position than the dimensions alone.

Replaced when the joint it was seated in is opened – as standard at every service that opens that connection, regardless of the visual condition of the O-ring after removal.

Symptoms – when to replace

• Water or oil leak in the area where this O-ring is mounted – under working pressure or immediately after it drops.
• O-ring hard, brittle or permanently deformed on removal – rubber has lost elasticity and will not return to its sealing shape after reassembly.
• Visible flattening without resilience – O-ring permanently compressed in the groove, does not spring back to its original cross-section of 2.62mm on removal.
• Cracks or pitting on the sealing surface visible after removal.
• Leak appears after reassembling the joint using the old O-ring – even without visible damage, an old seal does not give a reliable seal after having been relaxed and recompressed.

How to select the right part

Both dimensions must match simultaneously: internal diameter 13.94mm and cross-section 2.62mm. The dimensions are non-round – they result from the AS568 inch standard and cannot be rounded to the nearest metric values. Metric O-ring 14×2.5mm has a different internal diameter and different cross-section – it is not a substitute, even though the differences appear small.

When ordering a replacement from an industrial O-ring catalogue, look for AS568 size -112 or specify the exact dimensions 13.94×2.62mm without rounding. Identify by reference number 42167 – the Kranzle catalogue number is a more reliable basis for selection than independently finding an equivalent in standards catalogues.

If in doubt about the dimension, measure the sealing groove with a calliper: groove width corresponds to the O-ring cross-section (2.62mm), and its diameter determines the required O-ring dimension (13.94mm).

Compatibility

Static seal for Kranzle pressure washers. Verify the exact installation position by reference number 42167 and dimensions 13.94×2.62mm (AS568 standard).

[faq]

Why does the O-ring have a dimension of 13.94mm instead of a round 14mm – where do these non-standard values come from?|Dimensions 13.94×2.62mm are AS568 inch standard values converted to millimetres – 13.94mm corresponds to 0.549 inches. The AS568 standard originates in the United States and is widely used in hydraulic and pneumatic accessories worldwide, including by European pump manufacturers such as Kranzle. The values are not rounded to millimetres because the inch standard is the source – a metric equivalent with rounded dimensions is a different size.

Does a 14×2.5mm O-ring from a metric catalogue fit as a substitute for 13.94×2.62mm?|No – 14×2.5mm and 13.94×2.62mm are two different O-rings despite the apparently similar dimensions. The 0.06mm difference in internal diameter means the metric O-ring is slightly larger and will sit more loosely in the groove. The 0.12mm difference in cross-section means a different degree of compression at the same groove depth. For a static seal under the working pressure of a Kranzle pump, both differences can result in leakage or shortened seal service life.

[/faq]