Proper storage conditions must be maintained to ensure the physical and chemical properties of rubber seals (e.g., O-rings) remain intact during long-term storage. Compliance with international standards such as DIN 7716, ISO 2230, and DIN 9088 is critical for preserving dimensional stability, cleanliness, and performance. Below are the key storage principles and shelf-life recommendations:
Storage Conditions
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Temperature
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Ideal range: 5°C to 25°C
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Avoid proximity to heat sources or direct sunlight.
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For seals stored at low temperatures, acclimate them to 20°C for 24 hours before use.
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Humidity
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Relative humidity: <70%
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Prevent condensation and extreme dryness.
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Light Exposure
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Avoid UV radiation (sunlight/strong artificial light).
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Use UV-resistant packaging or store in opaque containers.
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Apply red/orange window coatings or UV-blocking films in storage areas.
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Radiation
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Protect seals from ionizing radiation.
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Oxygen & Ozone
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Store in airtight containers or sealed packaging to limit air exposure.
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Remove ozone-generating equipment (e.g., mercury vapor lamps, high-voltage devices) from storage areas.
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Deformation Prevention
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Store elastomers in their natural, stress-free state.
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Retain original packaging if it prevents deformation.
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Material Compatibility
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Avoid contact with solvents, oils, greases, or semi-solid materials.
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Do not store seals near magnetic materials, copper alloys, or PVC packaging.
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Separate seals made of different materials.
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Cleaning
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Clean only with mild soap and water.
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Prohibited: Organic solvents, sharp tools, or disinfectants.
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Air-dry at room temperature; avoid heat exposure.
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Shelf Life & Monitoring
Material | Max. Shelf Life (Under Recommended Conditions) |
---|---|
Polyurethane, Thermoplastics | 4 years |
Nitrile (NBR), HNBR, CR | 6 years |
EPDM | 8 years |
FKM, Silicone (VMQ), FVMQ | 10 years |
PTFE | Unlimited |
Important Notes:
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Seals exceeding the above shelf life require performance testing before use.
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Thin seals (<1.5 mm thickness) oxidize faster; inspect every 2 years regardless of shelf life.
Compliance & Support
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All recommendations align with ISO 2230 (Rubber products – Guidelines for storage).
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For custom specifications or technical queries, contact our engineering team:
📧 info@oilsealfactory.com
📞0086-156-3038-1362