Flat sealing strip

fiberglasstadpolefiberglass

Product Overview
The Fiberglass Tadpole Gasket is a flexible thermal sealing profile featuring a woven fiberglass outer cover and a compressible fiberglass core. Its all-fiberglass construction provides a soft, conformable sealing bulb suitable for industrial oven doors, furnace access panels, heated enclosures and other thermal equipment. Compared with metal-core tadpole seals, the fiberglass core offers softer compression and better conformity to minor surface variations. The integrated flat tail secures the gasket in position. BSTFLEX manufactures fiberglass tadpole gaskets in custom bulb diameters, tail widths, lengths and profiles for OEM and replacement applications.

All-Fiberglass Tadpole Gasket Construction
This profile uses fiberglass for both the external textile cover and the internal compressible core. The components perform distinct functions while working together as a single sealing profile.

Component / Construction / Function
Outer Cover | Woven Fiberglass Fabric | Provides the flexible external thermal textile surface
Internal Core | Fiberglass Core | Creates a soft and compressible sealing body
Bulb | Fiberglass Cover with Fiberglass Core | Compresses against the mating surface to create the seal
Tail | Woven Fiberglass Fabric | Provides a flat area for mechanical attachment

How the Fiberglass Core Creates the Seal
The bulb is the functional sealing section. When a door or panel closes, pressure compresses the bulb and the fiberglass core deforms to occupy the sealing gap. This compression compensates for small dimensional variations, surface irregularities and changes in gap size. Because the internal structure is fiberglass rather than metal mesh, the bulb delivers a comparatively soft compression characteristic while maintaining reliable sealing performance.

Why Choose a Fiberglass Core?

• Soft, flexible compression
• High conformity to irregular sealing surfaces
• Non-metallic internal construction
• Low-profile flexibility around equipment geometry
• Suitable for many industrial thermal door applications
• Available in different bulb diameters
• Customizable compression characteristics via core construction

Woven Fiberglass Outer Cover
The external cover is produced from woven fiberglass textile. It contains the internal core, forms the mounting tail and provides the exposed surface of the gasket. The woven cover follows straight runs, corners and equipment contours while maintaining the bulb-and-tail profile and resisting elevated temperatures.

Typical Applications

• Industrial oven doors (batch, curing, drying, walk-in, conveyor ovens)
• Furnace access doors and inspection panels
• Heat treatment equipment and thermal chambers
• Access panels and heated enclosures
• Industrial processing equipment and OEM thermal equipment

Fiberglass Core vs Stainless Steel Core (comparison)

• Compression feel — Fiberglass core: softer; Stainless steel core: firmer and more structured
• Conformability — Fiberglass core: high; Stainless steel core: depends on mesh construction
• Metal reinforcement — Fiberglass core: none; Stainless steel core: present
• Bulb support — Fiberglass: provided by fiber core density; Stainless steel: provided by metallic structure
• Typical selection reason — Fiberglass: soft compression and flexibility; Stainless steel: mechanical reinforcement and resilience

Product Characteristics

• Woven fiberglass outer cover
• Flexible fiberglass internal core
• All-fiberglass bulb construction
• Soft compression characteristics
• Good flexibility and conformability
• Suitable for irregular mating surfaces
• Integrated mounting tail
• Custom dimensions available
• Suitable for OEM and replacement gasket production

Typical Technical Specifications

• Product: Fiberglass Tadpole Gasket
• Outer cover: Woven fiberglass fabric
• Internal core: Fiberglass core (compressible)
• Construction: Compressible bulb with flat mounting tail
• Bulb diameter: Custom
• Tail width: Custom
• Length: Custom
• Profile: Custom according to application
• Temperature rating: Depends on fiberglass grade, core construction and operating conditions
• OEM production: Available

Custom Options and Replacement Guidance
BSTFLEX can manufacture different bulb diameters, bulb shapes, fiberglass core densities, tail widths, overall profile widths, finished lengths and mounting configurations. For replacement projects customers can provide the original gasket cross section, equipment drawing, dimensions, photographs or a physical sample. Core density and internal construction can be varied to tune compression and recovery characteristics.

Ordering & Commercial Notes
Order (MOQ): 1. Payment terms commonly offered: EXW, FOB, CIF, DDP, FCA. Typical shipping ports: Shanghai, Ningbo.

Technical Specifications

• Order (MOQ): 1
• Payment terms: EXW, FOB, CIF, DDP, FCA
• Shipping ports: Shanghai, Ningbo
• Lead time and certifications: Contact BSTFLEX with application details