One-Part RTV Silicone Sealant Storage — Polysiloxane Bulk Tank Selection

Storing Silicone Sealant? Start Here

If you're involved in manufacturing or distributing one-part RTV silicone sealants, understanding the right storage solutions is crucial. These sealants are commonly used in construction, automotive, and glazing industries. They come in various forms like cartridges, pails, and drums, but bulk storage is typically reserved for manufacturers handling prepolymer and crosslinker materials.

Can you store it in a poly tank?

Yes, you can store finished one-part RTV silicone sealants in HDPE rotomolded tanks at the distributor or end-user scale. The chemistry is non-reactive with polyethylene, making it a suitable material for storage. However, due to the high viscosity of the sealant, it is not practical for bulk tank storage or transfer via standard pump systems.

Key Issue: Viscosity Constraints

The main challenge with storing RTV silicone sealants is their thick, paste-like consistency. With a viscosity range of 200,000-500,000 cP, these sealants aren't pumpable using standard tank-truck or transfer-pump setups. This limits their storage to smaller containers like cartridges, pails, and drums.

The safety that actually matters

• Store in climate-controlled environments to prevent premature curing.
• Avoid temperatures above 100°F to maintain shelf life.
• Use appropriate materials for gaskets and fittings based on the sealant's chemistry.

Common questions

Can I use stainless steel tanks for storage?

Yes, stainless steel is suitable, especially at the manufacturer level for prepolymer and crosslinker materials.

What are the typical storage formats for distributors?

Distributors typically use cartridges, pails, and drums for storage, not bulk tanks.

How should I handle the sealant to prevent curing?

Keep the sealant in a climate-controlled environment and avoid exposure to high temperatures.