Seal Type
Primary
½” to 72”, available in various materials & configurations, with designs suitable for applications across all industries
Primary Mechanical Shoe Seal (MS6)
Primary Mechanical Shoe Seal (MS6) maintains continuous vapour-tight contact in floating-roof tanks, accommodating variable rim gaps and allowing installation or maintenance without interrupting tank operations.
Rim Space
Between 100mm to 200mm
Roof Type
External
The Primary Mechanical Shoe Seal (MS6) ensures effective vapour retention for floating-roof tanks, compatible with both welded and riveted designs. Its metallic shoes, supported by bolt-on pantograph hangers, adjust to varying rim spaces while maintaining continuous contact with the tank shell. Installation and maintenance are simple, with corrosion-resistant fasteners and no welding required, offering reliable performance across diverse crude and refined products.
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Description
The Primary Mechanical Shoe Seal (MS6) is suitable for a wide variety of tank types, handling the full range of crude and refined products. It is compatible with both welded and riveted tanks and accommodates wide variations in rim spaces.
All Primary Mechanical Shoe Seal (MS6) components are easily accessible, allowing installation and maintenance while the tank remains in service. No welding or flame cutting is required, and all components are secured with corrosion-resistant fasteners for long-lasting performance.
The metallic shoes are available in galvanised or stainless steel, with shoe height selected to match the rim configuration, minimise extension below the floating roof, and ensure compliance with environmental standards. The shoes are suspended within the rim space using bolt-on pantograph hanger assemblies. This flexible pantograph mechanism keeps the metallic shoes in constant contact with the tank shell, even when rim gaps vary, ensuring reliable sealing and vapour retention.
Contact information:
Tel: +44 (0) 1763 248 650
Email: sales@ewfm.co.uk
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Additional Specifications
Material Specification:
Continuous Seal:
Teflon (Fiberglass) / Calcium Silicate / Urethane / Polyurethane
Sealing Ring:
Galvanised / Stainless Steel
Service life:
10-25 years
Typical Weight:
20 kg per linear meter
Technical data:
Rim space:
Normally 200 mm. ± 100 mm. is the standard but the seal design can be modified to suit larger nominal rim space
Aromatic resistance:
100%
Recommended Vapour Membrane:
Calcium Silicate : 1.9 mm thick. It complies with DIN 22118, DIN 22100 (Part 1) and the Health and Safety Committee Guide of Shell. Meets the LASTFIRE 6.1 specifications. 85% compatible with aromatic products.
PTFE (Teflon): 0.25 and 0.35 mm thick. That comply with DIN 22118 and DIN 22100 (Part 1). Meets the LASTFIRE 6.1 specifications. 100% compatible with aromatic products.
Polyurethane (PU): from 0.4mm to 1 mm thick. 70-100% compatible with aromatic products
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Data Sheets
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