Fiberglass gasket

stainless steelhigh-temperatureabrasion-resistant

Product overview
Double-Core Oval Fiberglass Oven & Kiln Door Gasket is a heavy-duty high-temperature textile seal built around two parallel internal cores to create a wider oval sealing profile than a conventional single-core round gasket. The twin-core construction provides a broader compression surface, increased profile stability and suitability for large sealing channels used in industrial ovens, kilns, furnaces and other high-temperature access doors.

Construction and materials
The gasket can be manufactured using two stainless steel knitted mesh cores, each individually covered with fiberglass overbraid, and then combined under an additional common fiberglass overbraid to form one stable oval profile. An optional external stainless steel knitted wire mesh jacket can be added for increased abrasion protection. Braid construction, yarn specification and finished density can be adjusted according to required profile and equipment conditions.

Quick summary

• Two parallel internal cores create a wide oval gasket profile
• Available with stainless steel knitted mesh core construction
• Fiberglass overbraid provides the primary flexible textile sealing structure
• Optional stainless steel outer mesh jacket for abrasion-intensive applications
• Designed for wide sealing channels and industrial access doors
• Suitable for repeated compression and high-cycle door applications
• Custom width, height, core size, length and finished construction
• OEM development from drawings, dimensions or physical samples

What is a double-core oval door gasket?
A double-core door gasket uses two internal sealing cores positioned side by side rather than one circular core. When combined under a common outer braid, the finished gasket develops an oval or flattened-oval cross-section that provides two internal compression zones and a wider sealing footprint compared with a single-core round gasket. This is important where sealing channels are wider than they are deep or where a broad gasket footprint is required.

Typical multi-layer construction

• First stainless steel knitted mesh core
• Second stainless steel knitted mesh core
• Individual fiberglass overbraid around each core
• Both cores positioned in parallel
• Common fiberglass overbraid around the complete twin-core assembly
• Optional stainless steel knitted wire mesh outer jacket

Twin stainless steel mesh cores — benefits
The internal cores determine much of the gasket's compression behavior and dimensional stability. Two knitted stainless steel mesh cores positioned side by side create a resilient internal structure while maintaining the wider oval geometry. Compared with a single-core gasket, the double-core construction can provide a wider sealing footprint, two internal compression zones, improved support across a broad sealing channel, greater resistance to profile collapse and stable positioning in large gasket channels.

Fiberglass overbraid construction
Fiberglass yarn can be braided around each internal core and around the combined double-core assembly. Textile layers help hold the cores in position, create a continuous outer sealing surface, maintain flexibility along the gasket length, allow the profile to follow doors and access openings, and separate the internal metallic structure from the mating surface. Braid construction and finished density are adjustable for the required profile and conditions.

Optional stainless steel wire mesh outer jacket
Where the gasket experiences substantial rubbing, repeated sliding contact or abrasive interaction with metal channels and door surfaces, an additional stainless steel knitted wire mesh jacket can be installed over the fiberglass construction to provide abrasion resistance. The outer metallic jacket is selected for mechanical protection rather than solely for temperature rating.

Comparison: double-core gasket vs single-core clip-on and wire-jacketed gaskets
Construction - Primary Design Purpose
Single-core clip-on gasket - Round compressible seal with integrated attachment clips
Wire-jacketed gasket - Enhanced protection against external abrasion
Double-core oval gasket - Wide sealing footprint and twin internal support zones

Applications
Typical applications include industrial kiln doors, industrial oven doors, heat-treatment furnace doors, large batch oven doors, drying oven access doors, high-temperature curing ovens, thermal processing equipment, large furnace access openings, brick and ceramic kilns, industrial dryer doors, high-temperature access panels and OEM heating equipment.

Designed for high-cycle industrial doors
The double-core construction can be engineered to provide a stable broad profile for doors that are opened and closed repeatedly. The two internal cores share compression load across the width of the gasket. Actual gasket life depends on selected materials, compression level, installation geometry, door alignment and operating environment.

How to specify the correct oval gasket size
Do not select an oval door gasket only by measuring a worn gasket. For replacements measure both the existing gasket and the equipment. Useful measurements: channel width, channel depth, door-to-frame gap when closed, available compression space, overall gasket path, corner geometry, existing gasket width and height. A photograph of the gasket cross-section is useful when internal construction is unknown.

Custom and OEM manufacturing
Custom profiles can be developed from engineering drawings, cross-sectional sketches, existing gasket samples, door and channel dimensions, operating conditions and OEM dimensional requirements. Prototype development is recommended when profile, core construction or required compression differs significantly from existing designs.

Information required for a quotation

• Application or equipment type
• Gasket finished width
• Gasket finished height
• Sealing-channel dimensions
• Closed sealing gap
• Preferred core construction if known
• Required outer construction
• Operating temperature
• Door opening frequency
• Required gasket length
• Required quantity
• Annual demand for OEM projects
• Drawing, photograph or existing sample

Technical data (summary)
Item - Available Construction
Profile - Oval / flattened oval / custom twin-core profile
Number of Cores - Two parallel cores
Core Material - Stainless steel knitted mesh or custom construction
Primary Outer Material - Fiberglass braid
Individual Core Overbraid - Available
Combined Outer Overbraid - Fiberglass
External Metal Jacket - Optional stainless steel knitted wire mesh
Finished Width - Custom
Finished Height - Custom
Length - Custom
End Treatment - According to application
Temperature Rating - Depends on complete selected material and gasket construction; confirm for the required configuration

Caractéristiques / spécifications techniques

• Product type: Double-core oval fiberglass oven and kiln door gasket
• Core count: Two parallel internal cores
• Core options: Stainless steel knitted mesh (solid or hollow), fiber/metal hybrid, application-specific resilient cores
• Outer construction: Fiberglass overbraid; additional overbraids and heat treatments available
• Optional external jacket: Stainless steel knitted wire mesh for abrasion resistance
• Profile: Oval / flattened oval / custom twin-core profile; finished width and height are custom
• Length: Custom per application
• End treatment: According to application
• Temperature rating: Determined for the complete assembly (material- and construction-dependent)
• Typical applications: Industrial ovens, kilns, furnaces, high-temperature access doors and OEM heating equipment
• Customization: Manufactured from drawings, samples, sealing gap dimensions and OEM requirements