Rubber Gasket for Toilet Tank Fill Valve

Reliable leak-proof sealing for toilet fill valves. Custom-molded EPDM, NBR, Silicone, and Viton seals with tight tolerances for OEM and plumbing suppliers.

Materials: EPDM / NBR / Silicone / Viton
Sizes: Custom (OD 10–120 mm, thickness 1–15 mm)
Hardness: 40–90 Shore A
New Mold Development (7-Day Sample Delivery)
FDA Food-Grade, ROHS, REACH, WRAS, and Other Certifications
Customization available based on provided samples or 3D design drawings.

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Product Details

Our custom rubber seals for toilet fill valves are designed for dependable sealing performance in toilet cisterns. Manufactured from premium rubber compounds—EPDM, NBR, Silicone, or Viton—these seals provide excellent resistance to water, chlorine, and environmental aging. Precision molding delivers consistent dimensions and elasticity to help OEMs and distributors reduce leaks, improve valve efficiency, and extend product lifespan.

We offer full customization from single-piece prototypes to high-volume production, including material selection, mold design, testing, and packaging. Ideal for plumbing part suppliers, toilet manufacturers, and repair kit producers.

Specifications (Customizable)

Specification	Range / Details
Outer Diameter (OD)	10 – 120 mm (customized)
Inner Diameter (ID)	Per customer's design
Thickness	1 – 15 mm
Hardness	40 – 90 Shore A
Material	EPDM / NBR / Silicone / Viton
Color	Black / Red / Blue / Custom
Tolerance	±0.05 mm (or per requirement)
Process	Compression molding / Injection molding

Material Options

EPDM

Excellent water and aging resistance — ideal for standard toilet tanks.

NBR (Nitrile)

Good elasticity and oil resistance — suitable for valves with slight oily contact.

Silicone

High temperature resistance and odorless — preferred for premium systems.

Viton (FKM)

Excellent chemical & high-temp resistance — for heavy-duty or industrial environments.

Applications

Toilet fill valves and inlet assemblies
Toilet cistern components for OEM manufacturers
Plumbing repair kits and spare parts
Water-saving toilet systems and smart cisterns
Bathroom hardware distributors and wholesalers

Why Choose Us

15+ Years Manufacturing

Experienced in sealing components and valve accessories for global OEMs.

ISO-Certified Quality

Strict QC and material testing for consistent performance.

Engineering Support

Design optimization and prototype validation for faster time-to-market.

Competitive Factory Pricing

Direct factory supply reduces cost and shortens the supply chain.

Fast Sampling & Tooling

Rapid sample turnaround and efficient mold development.

Stable High-Volume Production

Automated lines ensure on-time delivery for bulk orders.

Customization Process (OEM / ODM)

Requirement analysis & drawing confirmation
Material selection & sample recommendation
Mold design & development
Prototype samples & testing
Approval & mass production
Packing & delivery

Frequently Asked Questions

Q1: Can you customize the size of the rubber seals? Yes. All dimensions (OD, ID, thickness) can be customized to fit your valve design. Tolerances down to ±0.05 mm are available for precision applications.

Q2: Which material is recommended for toilet fill valves? EPDM is the most commonly recommended material due to its excellent water resistance and aging performance. Choose NBR for oil contact, Silicone for premium temp resistance, or Viton for chemical-heavy use.

Q3: Do you provide free samples? Yes. We offer free samples for quality testing. Contact our sales team and provide basic drawings or sample references.

Q4: What is the lead time for custom orders? Typical lead times: 7–15 days for mold & samples; 15–30 days for mass production. Exact lead time depends on order volume and tooling complexity.

Q5: Can you supply seals for complete fill valve systems? Yes. We can supply individual seals or assemble them into valve components for OEM partners upon request.