📝 DRAFT — proposed Dseal standard for confirmation. Benchmarked to best-in-class; confirm Dseal can manufacture/supply each value before publishing.
Dseal — Technical Data Sheet
Dseal SeismoMax
Seismic / Large-Movement Expansion Joint System
Doc: TDS-SM-01
Rev: 00 (draft) · Jul 2026
Class: Best-in-class
Rev: 00 (draft) · Jul 2026
Class: Best-in-class
1. Product Description
Dseal SeismoMax is a large-movement, multi-directional seismic expansion joint system. Aluminium base frames with a self-centring mechanism carry a high-grade elastomeric seal and cover to accommodate three-axis (longitudinal, transverse and vertical) structural movement in seismic, wind-sway and thermal conditions.
2. Applications
- High-rise towers, hospitals, airports, metro & rail stations, stadiums
- Seismic-zone and base-isolated structures · long thermal blocks
3. Performance Specification
| Movement capability | Multi-directional, up to ±100% of nominal joint width |
|---|---|
| Movement directions | 3-axis (X longitudinal / Y transverse / Z vertical) |
| Joint opening range | Up to ~1,800 mm (large-movement variants) |
| Movement class | Target ASTM E1399 Category IV (thermal / wind-sway / seismic) |
| Fire rating | Optional companion Dseal PyroBarrier fire barrier (2–3 hr, in certification) |
| Watertight | Optional non-invasive watertight seal variant |
4. Materials & Components
| Base frame | Extruded aluminium alloy 6063-T5 / T6 with self-centring bar |
|---|---|
| Cover | Aluminium / stainless steel / architectural bronze options |
| Seal | High-grade EPDM / silicone elastomer |
| Fixings / finishes | Stainless-steel anchors; mill / anodised finish |
5. Standards & Compliance
- Movement class ASTM E1399 Category IV (target) · UL 2079 (fire companion) · relevant IS codes
6. Installation
Surface-mount installation with self-centring bar; anchored per Dseal method statement. CAD / BIM details available on request.
7. Warranty
Dseal 10-year product warranty.
Specifications represent Dseal’s proposed published product standard, benchmarked to best-in-class trade performance and subject to project-specific confirmation. Dseal is an independent manufacturer; all third-party product and brand names are trademarks of their respective owners. © Dseal.