Storage and Protection of Jack Rubber Shock-Absorbing Blocks
Proper storage and protection of jack rubber shock-absorbing blocks are crucial to maintain their mechanical properties, elasticity, and service life. Inappropriate storage conditions can lead to premature aging, hardening, cracking, or chemical degradation, affecting the performance and safety of the jack.
1. Temperature Control
Rubber blocks should be stored in a cool, dry environment. Excessive heat accelerates oxidative aging, increases hardness, and reduces elasticity. Extremely low temperatures can make the rubber brittle, increasing the risk of cracking during handling or installation. Ideal storage temperatures generally range between 15°C and 25°C.
2. Humidity and Moisture Protection
Excessive humidity can facilitate surface mold growth or chemical reactions with moisture-sensitive additives in the rubber. Rubber blocks should be kept away from water and stored on pallets or shelves that prevent direct contact with damp floors.
3. Protection from UV, Ozone, and Oxygen
Ultraviolet light and ozone exposure can cause surface cracking and deterioration. Rubber blocks should be stored indoors or covered with opaque, UV-resistant sheeting. Avoid exposure to strong ozone sources, such as electrical equipment or high-voltage machinery, which can accelerate surface damage.
4. Chemical Isolation
Rubber is susceptible to swelling, softening, or degradation upon contact with oils, fuels, solvents, acids, or alkaline substances. Store rubber blocks away from chemical storage areas and ensure that containers or pallets do not contain residues that could react with the rubber.
5. Physical Handling and Stacking
Avoid placing heavy objects on top of stored rubber blocks, which can cause permanent deformation.
Use gentle handling to prevent cuts, tears, or surface abrasions.
If stacking is necessary, maintain even support and limit the number of layers according to manufacturer recommendations.
6. Packaging and Covering
Store blocks in sealed packaging or protective wrapping when possible. This helps minimize dust accumulation, surface contamination, and exposure to environmental factors. Transparent or breathable covers should be avoided, as they may allow UV penetration or moisture accumulation.
7. Periodic Inspection
Regularly inspect stored rubber blocks for signs of hardening, surface cracks, discoloration, or chemical attack. Early detection of degradation allows timely intervention, such as reconditioning or replacement, before installation.
Conclusion
Proper storage and protection of jack rubber shock-absorbing blocks—including controlled temperature, low humidity, chemical isolation, protection from UV and ozone, careful handling, and periodic inspection—can significantly extend their service life and ensure reliable performance in operation.
References
Gent, A. N. Engineering with Rubber: How to Design Rubber Components. Hanser Publishers, 2012.
ASTM D573 – Standard Test Method for Rubber—Deterioration in an Air Oven.
ISO 2230 – Rubber Products—Guidelines for Storage.
Lake, G. J. “Fatigue and Fracture of Elastomers.” Rubber Chemistry and Technology, 2000.
