Double Jacket Gasket
Product Description
Product Detail
Double Jacket Gasket – Fully Enclosed Metal Jacket for Demanding Heat Exchanger & Pipeline Sealing
Kaxite Sealing is a premier China-based manufacturer and supplier of double jacket gaskets (Model KXT‑G2020). These gaskets consist of a thin metallic outer shell that fully encloses a resilient filler material (graphite, PTFE, ceramic, or non‑asbestos). The complete metal encapsulation protects the filler from pressure, temperature, and corrosion, while providing a robust sealing surface. Hand‑crafted to order, they are available in virtually any shape and size, with optional internal ribs (pass partition bars) for multi‑stream applications. Widely used in heat exchangers, pipeline flanges, and pressure vessels, they deliver reliable sealing under high bolt loads and thermal cycling.
As a trusted factory direct supplier in China, Kaxite offers custom dimensions, exotic jacket alloys, and competitive wholesale pricing. Request your price list and free sample →
Full Enclosure
Complete metal jacket protection
Any Shape
Custom profiles, round, oval, rectangular
Internal Ribs
Integral or welded pass partition bars
High Temp/Pressure
Up to 700°C, <6.4 MPa
Hand‑Made
Crafted to precision for each order
Product Specifications – KXT‑G2020
- Model: KXT‑G2020
- Jacket Type: Double (fully enclosed, two‑piece construction)
- Jacket Thickness: 0.1 – 0.5 mm (custom)
- Overall Thickness: 2 – 8 mm (depending on filler)
- Gasket Width (W): 10 – 25 mm (standard)
- Standards: ASME B16.20, DIN 2694, BS 3381, custom
- Max. Pressure: ≤ 6.4 MPa (higher on request)
- Max. Temperature: -196°C to 700°C (oxidising ≤450°C)
Material Selection – Jacket & Filler
- • Tin‑plate (galvanised)
- • Stainless Steel (SS304, 316, 316L)
- • Copper & Brass
- • Aluminium
- • Monel®, Inconel®, Titanium (on request)
- • Flexible Graphite (up to 500°C in air)
- • PTFE (up to 260°C, chemical resistant)
- • Ceramic Fibre (up to 1750°C)
- • Non‑asbestos (up to 450°C)
- • Asbestos rubber (up to 450°C, where permitted)
Contact us for filler selection based on media and temperature.
Single vs Double Jacket – Which One Do You Need?
Single Jacket
- One surface covered, OD and ID covered
- For narrow flange widths
- Low pressure valve / pump applications
- Lower cost
Double Jacket (Recommended)
- Fully enclosed – both sealing surfaces covered
- Ideal for heat exchangers and corrosive/high‑temp service
- Internal ribs (partition bars) available
- Superior protection for the filler
Typical Applications
Design Reference – Gasket Factors (m & y)
* For double jacket gaskets with soft iron or stainless steel, m=3.75 and y=60 MPa (standard design).
Always verify with flange design calculations.
Installation & Safety Guidelines
- Never reuse a gasket – once compressed, the filler and jacket deform permanently.
- Never use more than one gasket in a single flange joint.
- Inspect surfaces – flanges must be clean, flat, and free of deep scratches.
- Apply proper bolt torque – follow ASME PCC‑1; double jacketed gaskets require high and even bolt loads.
- Retorque after thermal cycling – especially for high‑temperature services.
- Handle with care – the thin jacket can be damaged by rough handling.
⚠️ Warning: Never use a gasket at both maximum temperature and pressure simultaneously. Always consult engineering for suitability. Download full safety & installation guide →
Frequently Asked Questions – Double Jacket Gasket
What is the difference between single and double jacket gaskets?
Single jacket gaskets cover only one surface (OD and ID are covered), while double jacket gaskets fully enclose the filler on both sealing surfaces and all edges. Double jacket provides superior protection and is recommended for heat exchangers and corrosive/high‑temperature services.
What shapes and sizes can you manufacture?
We can produce round, oval, rectangular, and custom‑shaped gaskets to match any flange or equipment. Outer diameters from small (50 mm) up to large (over 2000 mm) are possible.
Can you add internal ribs (partition bars)?
Yes. Internal ribs can be integrally formed or welded into the gasket, allowing separate flow passages in heat exchangers or multi‑pass systems.
What are the standard dimensions (width and thickness)?
Typical gasket width is 10 – 25 mm, and overall thickness 2 – 8 mm. Custom sizes are available.
What filler material do you recommend for high temperatures?
Ceramic fibre (up to 1750°C) or flexible graphite (up to 500°C in air) are common choices. For oxidising atmospheres above 450°C, ceramic is preferred.
What is the typical lead time for double jacket gaskets?
Hand‑crafted gaskets typically require 15–25 days for bulk orders, with samples in 7–10 days. Expedited service available upon request.
Why Source from Kaxite Sealing – Your Trusted China Partner
- ✔ 20+ years of metal gasket manufacturing
- ✔ ISO 9001 & PED certified
- ✔ Exported to 40+ countries
- ✔ Hand‑crafted precision for custom shapes
- ✔ Full traceability – EN 10204 3.1/3.2
- ✔ Wide material – jacket and filler options
- ✔ Flexible logistics – Ningbo/Shanghai port
- ✔ 24/7 technical support
Packaging & Worldwide Delivery
* Custom packaging and labelling available. View packaging & shipping details →
Ready to Order? Contact Kaxite – China's Reliable Double Jacket Gasket Manufacturer
As a premier China supplier of double jacket gaskets, Kaxite provides high‑quality products at factory‑direct prices. Whether you need a sample, a price list, or a bulk order, our experienced team is ready to support you with technical advice and prompt service.
📞 Call us: 0086-574-87527771 | ✉️ Email: cindy@seal-china.com | 🌐 Visit: www.metal-jacketed-gaskets.com