ISO 9001
SMACNA
01
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Product Code: CEI-GSK / GSK-NEO / GSK-EPDM
Gasket
طوق إحكام
Neoprene and EPDM gaskets for airtight duct flange connections and access door seals. Continuous rolls or pre-cut sections. Suitable for all duct pressure classes.
Frame Material
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ISO 9001:2015SMACNADW144
Description
Product Description
Castle Duct Gaskets provide airtight sealing at duct flange joints — essential for achieving SMACNA leakage class requirements. Available in Neoprene (closed-cell) and EPDM rubber materials in various thicknesses and widths. Self-adhesive backing option for fast installation. Used between TDF, TDC and companion angle flange connections.
SMACNA Compliant
Achieves required leakage class when properly compressed between duct flanges.
Closed-Cell
Neoprene closed-cell structure — does not absorb moisture, oil or grease.
Self-Adhesive Option
Peel-and-stick backing speeds installation — stays in place during duct assembly.
Temperature Resistant
Withstands HVAC operating temperatures — no degradation over system lifetime.
ISO 9001:2015 Certified
Quality management system certified by IGC, covering all stages from raw material to final delivery.
SMACNA & DW144 Compliant
Manufactured to the latest edition of SMACNA HVAC Duct Construction Standards and DW144.
Custom Sizes Available
Non-standard dimensions manufactured to project specifications with competitive lead times.
Approved by Leading Consultants
Accepted by Dar Al-Handasa, ECG, SYSTRA, Khatib & Alami and 25+ major engineering consultants.
Specifications
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Neoprene Material | Closed-cell neoprene sponge rubber | — |
| EPDM Material | EPDM rubber — UV and ozone resistant | — |
| Thickness | 3mm / 5mm / 6mm / 10mm | mm |
| Width | 20mm / 25mm / 30mm / 40mm / 50mm | mm |
| Roll Length | 10m / 15m per roll | m |
| Adhesive | Self-adhesive backing (optional) | — |
| Temperature Range | -30°C to +100°C (neoprene) / -40°C to +120°C (EPDM) | °C |
| Compression | 30-50% for optimal seal | % |
| Durometer | 25-35 Shore A | Shore A |
| Application | TDF / TDC / Companion angle flange joints | — |
| Color | Black (standard) | — |
| Compliance | SMACNA / DW144 / UL 181 | — |
Applications
Fields of Application
TDF flange connections
TDC flange connections
Companion angle joints
AHU access panel seals
Duct access door seals
Equipment vibration pads
Quality Assurance
Tests & Certificates
ISO Certification
International Quality Certifications
ISO 9001:2015
ISO 14001:2015
OHSAS 18001
International Standards
SMACNA · DW144 · IGC · UL
SMACNA
DW144
IGC
UL
Duct Test
Rigorous leakage and pressure testing to SMACNA and DW144 standards.
Duct Test 01
Duct Test 02
Duct Test 03
Air Tests
Air velocity and distribution testing.
Air Test 01
Air Test 02
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