What to lubricate orings?
O-rings are rubber sealing rings used in static and dynamic applications. Their circular cross-section allows for uniform pressure distribution. Properly installed O-rings prevent leaks and machine damage.
Installation – what to pay attention to
Use only O-rings with the correct dimensions – O-rings that are too small may crack, while oversized ones will not provide proper sealing. Do not overstretch them. During installation, do not twist the O-ring – gently slide it into position. The use of lubricant facilitates correct fitting.
Why use lubricant?
Lubricant protects O-rings against abrasion, cutting, and displacement. It helps to correctly seat the seal by filling microscopic gaps.
Benefits of lubrication
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Facilitates installation
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Protects against mechanical damage
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Stabilizes the O-ring position
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Reduces the force required for installation
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Prevents the ingress of contaminants
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Reduces the risk of failure
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Protects against corrosion
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Essential for pneumatic and vacuum systems
How to apply lubricant?
Lubricant can be applied with a finger, a brush, or by immersion. The layer should be thin and evenly distributed. Always check chemical compatibility. Ester-based lubricants are recommended.
What to consider when choosing a lubricant?
Resistance to temperature, water, chemical composition, and compatibility with the elastomer are crucial. The lubricant should be safe for the user and the environment.
Types of lubricants
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Silicone: resistant to water and temperature (-60°C to +230°C)
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Technical petroleum jelly: anti-corrosion protection under low loads
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Universal (lithium): for agricultural and industrial machinery
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Copper: resistant to high temperatures (>320°C)
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Graphite: resistant to moisture and temperatures up to +600°C
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Bentonite: non-melting, for live electrical systems
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Molybdenum: thermally stable, vibration damping
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