Product Overview

BenefitsDesign Features

The primary mechanical shoe seal is considered a liquid mounted seal per API and EPA recommendations.  The tightly spaced hoop springs exert a nearly constant force against the tank shell to maintain the seal even around peaked vertical seams and abrupt tank distortions. We have completed thousands of installations throughout the world and have eliminated seal compatibility and replacement issues for AST operators since 1992.

Benefits

High Durability

Long life due to the use of type 301 full-hard stainless steel pressure mechanisms.

Lightweight

Designed especially for Aluminum Internal Floating Roofs.

Excellent Compatibility

Stainless Steel and PTFE components are compatible with virtually all stored products.

Even Pressure / Gap Sealing

Equal force is applied to the Shoe Plate through the continual contact of the hoop springs.

Design Features

Threaded S.S. studs welded directly to the shoesHoop springsThe hoop springs bolt securely to both the shoes and the IFRGeometry carefully designedStainless steel shoe, aluminum brackets, PTFE vapor barrierEach hanger is securely bracedFlexible design, parts in stockAvailable low profile design, liquid mounted shoe

Threaded S.S. studs welded directly to the shoes

No through holes that promote corrosion and increase shell friction.

Hoop springs

Maximize shoe flexibility without varying the spring pressure. The shoes press against the shell in a long line, eliminating point contact and wear.

The hoop springs bolt securely to both the shoes and the IFR

This provides positive static bonding every two feet, beneath the liquid level.

Geometry carefully designed

Eliminates binding, excessive friction and high forces on the IFR.

Stainless steel shoe, aluminum brackets, PTFE vapor barrier

Compatible with most products. Fasteners are stainless steel or aluminum.

Each hanger is securely braced

Ensures stiffness and strength for out-of-round tanks.

Flexible design, parts in stock

ALLENTECH shoe seals are quickly retrofitted to all IFR brands.

Available low profile design, liquid mounted shoe

Maximizes storage volume. Complies with API and EPA requirements.

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