Comprehensive Guide to Sealing Product Storage – Best Practices & Industrial Tips.

Proper storage of sealing products (e.g., hydraulic seals, O-rings, oil seals, composite seal assemblies) plays a critical role in maintaining material integrity, longevity, and optimal performance—especially for heavy equipment and hydraulic applications. Improper storage can lead to premature aging, deformation, and reduced sealing effectiveness, increasing maintenance costs and downtime.

In this industry-oriented guide, we’ll cover essential sealing product storage guidelines, materials-specific considerations, environmental controls, and inspection and maintenance best practices.

Why Proper Storage Matters for Sealing Products

Sealing products, especially elastomer and polymer components like hydraulic seals, O-rings, and PTFE rings, are sensitive to environmental factors such as heat, light, ozone, humidity, and mechanical strain. When stored outside of recommended conditions, materials can:

• Become brittle or softened

• Crack, craze, or distort

• Lose elasticity or dimension accuracy

• Suffer premature chemical degradation

These changes significantly shorten service life and degrade performance once installed in hydraulic systems or heavy machinery.

Sealing Product Storage Best Practices

1. Maintain a Controlled Temperature Environment

• Ideally store seals at room temperature, approximately +15°C to +25°C (59°F–77°F).

• Avoid temperature extremes—too hot accelerates degradation; too cold can make elastomers brittle.

• Keep seals away from direct heat sources like boilers, stoves, or HVAC vents.

Proper temperature control during storage directly affects the elasticity and sealing performance of hydraulic components once installed. For applications such as hydraulic cylinders operating under high pressure, selecting well-protected and correctly stored Hydraulic Seal Kits helps ensure long-term system reliability.

2. Protect from Humidity, Light & Ozone

• Storage areas should be cool, dry, clean, and well-ventilated.

• Relative humidity should stay below ~65%.

• Avoid direct sunlight and strong artificial UV light, as ultraviolet radiation accelerates rubber and polymer aging.

• Keep products away from ozone-generating equipment like electric motors or welders.

3. Keep Seals Free from Mechanical Strain

• Avoid hanging, compressing, bending, or twisting sealing products in storage.

• Store seals flat or loosely stacked in original packaging to prevent distortion or permanent set.

• Larger or composite seals are especially susceptible to shape changes under stress.

4. Prevent Chemical Contamination

• Store seals away from solvents, fuels, lubricants, oils, greases, and harsh chemicals.

• Avoid contact with materials containing plasticizers (e.g., PVC) that can leach into elastomers.

• If necessary, use airtight containers or protective packaging to separate seals from contaminants.

5. Labeling & Inventory Management

• Clearly label stored products with batch numbers, manufacturing dates, and material types.

• Implement FIFO (First In, First Out) inventory rotation to ensure older seals are used before newer stock.

Each elastomer material has a defined storage life under controlled conditions. Our Seal Storage & Shelf Life Guide provides detailed insights into how long different sealing materials can be stored without compromising performance.

Material-Specific Storage Considerations

Different sealing materials such as NBR (nitrile), EPDM, FKM/Viton®, silicone, and PTFE have different sensitivity and storage lifespans. Under ISO/DIN industrial standards:

• NBR & HNBR: Moderate shelf life

• EPDM & FKM: Longer resistance to ageing

• PTFE: Excellent stability with minimal degradation over time

Always store materials according to manufacturer recommendations to preserve original properties.

Inspection & Pre-Installation Checks

Before installing stored seals:

• Visually check for cracking, hardening, softening, or surface distortion.

• Inspect for contamination, discoloration, or unwanted deposits.

• Ensure seals are at ambient temperature before handling for installation.

If defects are found, avoid installation, as this can accelerate equipment wear and reduce hydraulic system reliability.

FAQ – Sealing Product Storage

What temperature should sealing products be stored at?

Sealing products are best stored at room temperature (approx. +15°C to +25°C) and away from high heat sources that accelerate material degeneration.

Should sealing products be exposed to direct sunlight?

No. Direct sunlight and UV exposure can quickly age elastomer materials, making them brittle or discolored.

How should seals be stored to prevent deformation?

Store seals flat or loosely stacked in original packaging to avoid stretching or compression. Never hang seals on hooks or nails.