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SIMBA reference model J78 is a U-shape frameless shower door bottom seal designed to reduce water leakage, splashing, and gaps between the door and floor.
This transparent PVC bottom seal features a rigid body and a soft single fin, providing flexible sealing on the bottom edge of frameless glass shower doors. Ideal for OEM/ODM shower enclosure projects, it can be customized for glass thicknesses from 4mm to 15mm and lengths up to 3.0m. The push-on installation requires no adhesive, making it quick and easy to fit.
| Model | J78 |
|---|---|
| Profile | U-shape |
| Fin Type | Soft single fin |
| Body Material | Rigid clear PVC |
| Fin Material | Soft PVC (custom TPE/silicone) |
| Color | Transparent (custom colors available) |
| Glass Thickness Compatibility | 4, 5, 6, 8, 10, 12, 15 mm |
| Length | 1.0m, 2.0m, 2.2m, 2.5m, 3.0m or custom |
| Temperature Range | -20°C to 50°C |
| Sample Length | 100mm free sample |
| Lead Time | 20 days |
| Warranty | 1 year |
The J78 seal is a two-component profile: a rigid transparent PVC body that fits over the glass edge, and a soft single fin that flexes to seal against the floor. This design combines stability with flexibility. For enhanced performance, TPE or silicone materials are available, offering improved temperature resistance and long-term sealing.

Duration: 3 years
Application: Waterproof sealing, water blocking, and anti-collision for frameless shower enclosures in Italian bathroom projects.
Result: The seal maintained stable waterproof performance for 3 years in a humid environment, with no yellowing or performance degradation, meeting EU quality requirements and leading to repeat orders.
Compliance: Fully compliant with EU REACH and RoHS regulations, with anti-yellowing and anti-aging performance.
The J78 can be customized for 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, and 15mm glass. Please specify your glass thickness when ordering.
Yes, we offer a 100mm sample for testing. Simply contact our sales team with your requirements.
No, the J78 is designed for push-on installation – just press it onto the glass edge. No adhesive is needed.
Standard material is PVC with a soft fin. We also offer TPE, silicone, and other customized materials upon request.
Our MOQ is 500 meters per seal strip model or custom profile. However, trial orders and mixed specifications can be discussed.
We typically require 40% deposit before production and 60% balance before shipment. Terms can be negotiated for long-term cooperation.
The standard lead time is 20 days after confirmation.
Yes, the J78 seal has been tested by TÜV Rheinland and complies with REACH and RoHS directives.
For pricing, samples, or custom development, please provide the following details:
Contact: James Liu | Email: support@glassseals.com | Phone/WhatsApp: +8613929102256
