Acetoxy-Cure RTV Silicone Storage — Vinegar-Smell 1-Component Sealant Tank Selection

Storing RTV Silicone Acetoxy Cure? Start Here

If you're dealing with RTV silicone acetoxy-cure sealants, you're handling a popular and versatile material known for its strong adhesion and characteristic vinegar smell. It's commonly used in construction, aquarium assembly, and industrial gasketing. However, storing this uncured sealant requires careful consideration to prevent premature curing and material degradation.

Can you store it in a poly tank?

Yes, you can store uncured acetoxy-cure RTV silicone in polyethylene tanks, but it's crucial to maintain an anhydrous environment to prevent curing. HDPE and LDPE are standard for packaging cartridges and bulk drums. However, for compounding operations, 316L stainless steel tanks are preferred due to their resistance to acetic acid, which is a byproduct of the curing process.

Key Issue: Moisture Exposure

The biggest challenge with storing acetoxy-cure RTV silicone is its sensitivity to moisture. Exposure to atmospheric moisture can trigger the curing process, leading to skinning or hardening of the sealant in storage. Ensure all equipment is sealed against moisture, especially during off-shift periods, to maintain the integrity of the product.

The safety that actually matters

• Use acetic-acid-resistant materials to avoid corrosion.
• Ensure equipment is sealed to prevent moisture exposure.
• Match gaskets to the manufacturer's compatibility chart for optimal performance.

Common questions

Can I use carbon steel tanks for storage?

No, carbon steel is not recommended due to acetic acid corrosion and potential contamination.

What gasket materials are suitable?

EPDM and Viton (FKM) are recommended for their resistance to acetic acid.

How do I prevent the sealant from curing in storage?

Maintain an anhydrous environment and ensure all equipment is properly sealed against moisture.