Double Jacketed Metal Clad Gasket
Model:KXT 900
Double Jacketed Metal Clad Gasket are normally supplied with a non-asbestos, high temperature filler. The standard filler is normally sufficient for applications up to 900°F (482°C). Other soft fillers are available for higher temperatures or special applications. Standard metals used to make jacketed gaskets, regardless of the type, are aluminum, copper, the various brasses, soft steel, nickel, Monel, Inconel, and stainless steel types 304, 316, 321, 347, 410. The choice of metal used for the jacketed part of gasket would depend upon the service conditions being encountered.
KXT 900 Double Jacketed Metal Clad Gaskets are precision-engineered sealing solutions for high‑temperature and high‑pressure applications, particularly heat exchangers, autoclaves, and boiler flues. Available in a wide range of jacket metals (stainless steel, Monel, Inconel, copper, brass, soft iron) and filler materials (non‑asbestos, graphite, PTFE). Standard service up to 900°F (482°C) with optional high‑temperature fillers. Custom sizes and shapes offered with fast turnaround. Request a quote →
KXT 900 Double Jacketed Metal Clad Gasket – Robust Sealing for Demanding Heat Exchanger & Flange Applications
Kaxite Sealing offers the KXT 900 Double Jacketed Metal Clad Gasket – a reliable, versatile gasket designed for extreme service conditions. Constructed with a metal jacket (or double shell) and a soft, compressible filler, this gasket style provides excellent blow‑out resistance, handles thermal cycling, and maintains sealability under fluctuating pressures. It is the preferred choice for heat exchanger channel covers, tube sheets, and large‑diameter flanges where standard soft gaskets are inadequate.
Our double jacketed gaskets are custom‑manufactured to virtually any size, shape, or configuration – from round to oval to complex irregular geometries. The primary seal is achieved at the inner lap where the metal is thickest, while the outer lap often provides a secondary seal. For elevated temperatures (up to 1000°F+), we offer corrugated metal filler variants that eliminate organic binders and extend service life. Contact our engineering team to discuss your flange dimensions and operating parameters.
Temperature RangeUp to 900°F (482°C)
Jacket MaterialsSS304/316/321/347, Monel, Inconel, Copper, Brass, Soft Iron
Filler OptionsNon‑asbestos, Graphite, PTFE, Corrugated Metal
Size RangeCustom – any diameter or shape
Pressure RatingUp to Class 2500 (dependent on design)
Why Choose KXT 900 Double Jacketed Gaskets?
- ✅ High‑Temperature Capability – Standard filler supports 900°F; metal‑filled versions handle 1000°F+.
- ✅ Excellent Blow‑Out Resistance – Metal jacket contains the soft filler, preventing extrusion.
- ✅ Custom Shapes & Sizes – Manufactured to your exact flange dimensions – round, oval, rectangular, or irregular.
- ✅ Multiple Metal Choices – Select from stainless steels, nickel alloys, copper, brass, or soft iron to match process media.
- ✅ Dual‑Seal Design – Inner lap provides primary seal; outer lap offers secondary sealing in many heat exchanger designs.
- ✅ Economical for Large Diameters – Cost‑effective compared to solid metal gaskets while delivering reliable performance.
Available Configurations – Choose the Right Style for Your Application
Kaxite offers several jacketed gasket variants to suit different flange designs, pressure classes, and temperature requirements.
Double Jacketed Metal Clad (Standard)
The most common style for heat exchangers. Features a single shell and a liner, with a soft filler (non‑asbestos, graphite, or PTFE). The inner lap provides the primary seal, and the outer lap adds secondary sealing in many designs. Suitable for temperatures up to 900°F.
Double Jacketed Corrugated
Corrugations on the gasket surface create a labyrinth seal and reduce contact area, enhancing compressive characteristics. Still relies on the inner lap as the primary seal but offers improved performance in cyclic pressure applications.
Corrugated Metal Filler (High‑Temperature)
For applications exceeding 900°F (up to 1000°F+), we replace the soft filler with a corrugated metal insert of the same alloy as the jacket. This construction eliminates organic binders and provides exceptional thermal stability, ideal for high‑pressure, high‑temperature heat exchangers.
Single Jacketed Overlap
Designed for narrow flange widths (≤ 1/4” / 6.4 mm) where a double jacketed design is impractical. Provides total enclosure of the soft filler and is commonly used in air tool and engine applications with limited gasket seating area.
Double Jacketed Double Shell
Utilizes two shells (instead of shell + liner) for enhanced stability and higher compressive load capacity. Features double laps at both ID and OD, offering superior blow‑out resistance. Typically specified for high‑pressure applications (Class 900 and above).
* Custom designs, non‑standard shapes, and special alloys are available. Contact us with your drawing or specification.
ISO 9001:2015 Custom Sizes & Shapes High‑Temperature Fillers Wide Alloy Selection Fast Prototyping
Key Advantages of KXT 900 Double Jacketed Gaskets
Thermal Stability – Designed for continuous service up to 900°F (482°C) with standard fillers; metal‑filled versions handle 1000°F+.
Corrosion Resistance – Choose from stainless steels, nickel alloys, copper, brass, or soft iron to match your process fluid.
Blow‑Out Prevention – The metal jacket fully contains the soft filler, preventing extrusion even under fluctuating pressure.
Excellent Resilience – The compressible filler accommodates flange surface irregularities and thermal expansion.
Cost‑Effective for Large Diameters – More economical than solid metal or spiral wound gaskets for large flanges.
Easy Installation – Robust construction simplifies handling and placement, reducing installation time.
Technical Specifications – KXT 900 Double Jacketed Gasket
Typical properties and design parameters. Values may vary based on material selection and gasket geometry.
| Property | Value / Range | Notes |
|---|---|---|
| Max. Service Temperature |
900°F (482°C) – standard filler 1000°F+ – metal filler |
Depends on filler and alloy |
| Jacket Materials | SS304, 316, 321, 347, Monel, Inconel, Copper, Brass, Soft Iron | Custom alloys on request |
| Filler Materials | Non‑asbestos, Graphite, PTFE, Corrugated Metal | Select based on media & temp. |
| Pressure Rating | Up to Class 2500 | Depends on flange design and thickness |
| Size Range | Any diameter – from 1″ to over 120″ | Custom shapes available |
| Minimum Radial Width | 1/4″ (6.4 mm) for single‑jacketed overlap | Double jacketed requires more width |
| Gasket Thickness (uncompressed) | Typically 0.125″ – 0.250″ (3.2 – 6.4 mm) | Custom thickness available |
| Compressibility | 5 – 15% (depending on filler) | Higher for soft fillers |
| Recovery | ≥ 40% (for graphite filler) | Excellent for thermal cycling |
* All specifications are typical and can be tailored to your specific flange dimensions, pressure, and temperature requirements. Contact our technical team for a detailed design review.
Typical Applications & Industries
Heat Exchangers Channel covers, tube sheets, and floating heads – the most common application for double jacketed gaskets.
Pressure Vessels & Autoclaves Large‐diameter manway and head closures in chemical reactors and sterilizers.
Boilers & Flues Inspection doors, handholes, and flue connections in power generation and industrial boilers.
Valve Bonnets & Pumps Sealing of valve covers and pump casings where high temperatures or corrosive media are present.
Petrochemical & Refinery Flange connections in high‑temperature process lines, including FCC units and thermal crackers.
Marine & Offshore Seawater cooling systems, exhaust piping, and ballast tank manholes.
Why Partner with Kaxite for Double Jacketed Gaskets?
Decades of Experience – Since 1990, Kaxite has been a trusted manufacturer of high‑performance sealing solutions, with deep expertise in jacketed gasket design.
ISO 9001:2015 Certified – Rigorous quality management from raw material inspection to final dimensional verification.
Complete Customization – Any size, shape, alloy, or filler – we manufacture to your prints or reverse‑engineer existing gaskets.
Competitive Factory Pricing – Direct supply eliminates intermediary costs, offering you the best value.
Fast Turnaround – Standard sizes ship within 5‑7 business days; custom orders typically 10‑15 days.
Technical Support – Our engineering team assists with material selection, flange load calculations, and installation guidelines.
Proven Reliability: Kaxite’s double jacketed gaskets are installed in thousands of heat exchangers and pressure vessels worldwide, delivering leak‑free service in harsh conditions.
Quality Assurance & Compliance
All KXT 900 gaskets are manufactured under strict quality controls in our ISO 9001:2015 facility. We perform 100% dimensional inspection using precision measuring equipment, and we can provide material test certificates (MTCs) and positive material identification (PMI) reports upon request. Our jacketed gaskets are designed to meet or exceed ASME Section VIII, TEMA, and API 6A standards where applicable.
- ISO 9001:2015
- 100% Dimensional Inspection
- Material Traceability
- PMI Testing Available
- ASME / TEMA Compliant Designs
Custom Manufacturing & OEM Services – Free Design Review
We specialize in custom‑engineered double jacketed gaskets. Whether you need a non‑standard size, an irregular shape, a special alloy, or a unique filler combination, our team can deliver. Send us your drawing or flange details for a rapid quotation.
- Custom diameters from 1″ to over 120″
- Any shape – round, oval, rectangular, or complex
- Wide alloy selection – stainless steels, nickel alloys, copper, brass, soft iron
- Filler options: non‑asbestos, graphite, PTFE, corrugated metal
- Precision tolerances and surface finishes
- Private labeling and custom packaging available
Request a free design review or ask for a bulk quote – our team responds within 24 hours with competitive pricing and lead‑time estimates.
Frequently Asked Questions About Double Jacketed Gaskets
- Q: What is the difference between a double jacketed and a single jacketed gasket?
- A: Double jacketed gaskets have a full metal envelope (shell and liner) that completely encloses the soft filler, providing greater stability and blow‑out resistance. Single jacketed gaskets have a partial metal covering and are typically used for narrow flange widths (≤ 1/4″) where space is limited.
- Q: What temperature can these gaskets withstand?
- A: With standard non‑asbestos or graphite filler, the maximum continuous service temperature is 900°F (482°C). For applications above that, we offer a corrugated metal filler that can handle up to 1000°F+ (538°C+), limited only by the alloy selection.
- Q: Are these gaskets suitable for heat exchangers?
- A: Yes – double jacketed gaskets are the most common type used in heat exchanger applications, including floating heads, channel covers, and tube sheets. They accommodate thermal expansion and provide robust sealing even with frequent temperature cycles.
- Q: Can you make non‑round shapes?
- A: Absolutely. We produce oval, rectangular, and custom‑shaped jacketed gaskets to match any flange or equipment opening. Simply provide a drawing or template, and we will fabricate to your exact dimensions.
- Q: What is the typical lead time for custom gaskets?
- A: Standard sizes (common diameters and materials) typically ship within 5‑7 business days. Custom orders with non‑standard alloys or complex shapes usually require 10‑15 business days, depending on material availability and quantity.
Partner with Kaxite Sealing – your trusted manufacturer of double jacketed metal clad gaskets. With extensive experience in heat exchanger sealing, a wide range of materials, and a commitment to precision, we deliver gaskets that ensure long‑term reliability in high‑temperature and high‑pressure services. Request a free design review or get a tailored bulk quote today – our engineering team responds within 24 hours.
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