FKM Bonded Washer High Temp High Pressure Oil Drain Plug Seal Ring

Product Overview:

This premium fully-encapsulated FKM (Fluoroelastomer) bonded washer combines a rigid metal core with a high-performance rubber seal. It is engineered specifically to provide a reliable, leak-proof seal for high-temperature and high-pressure fluid systems, making it the ideal choice for oil drain plugs, hydraulic fittings, and industrial pipe connections.

Key Features & Benefits :

• Extreme Temperature Resistance: Withstands operating temperatures from -20°C to +200°C (-4°F to +392°F) without degradation.
• High-Pressure Performance: The internal metal core (Carbon Steel or Stainless Steel) prevents over-compression and extrusion, ensuring a secure seal under pressures up to 40 MPa.
• Superior Chemical & Oil Resistance: The fully encapsulated FKM (Viton® equivalent) rubber offers excellent resistance to mineral oils, synthetic hydraulic fluids, fuels, and aggressive chemicals.
• Leak-Proof Reliability: The unique bonded design eliminates the risk of rubber delamination, providing a long-lasting, maintenance-free end-face static seal.
• Customization Available: We support OEM/ODM services. Custom sizes (Metric/SAE), colors (Brown/Red/Black), and metal core materials are available.

Technical Specifications:

Application Scenarios:

Automotive Engine Oil Drain Plugs & Transmission Pans
Designed for frequent maintenance cycles. Our FKM bonded washer provides a highly reliable, reusable seal that prevents oil weeping and drips from oil drain plugs. The rigid metal core prevents over-tightening damage during installation, while the FKM rubber resists hot engine oil and transmission fluid, ensuring a clean, leak-free garage floor and extending service intervals.

Hydraulic Valve Blocks, Flanges & Threaded Pipe Joints
Engineered for high-pressure environments. In hydraulic systems, standard rubber O-rings often suffer from "extrusion" (being forced out of the gap) under extreme pressure. The internal metal skeleton of our bonded washer acts as a rigid compression limiter, preventing rubber deformation and ensuring a zero-leakage end-face static seal, even under pressure pulses up to 40 MPa.

Turbocharger Oil Lines & High-Pressure Fuel Manifolds
Built for extreme thermal stress. Turbochargers and fuel manifolds generate intense heat (often exceeding 150°C) combined with aggressive fuel and synthetic oil exposure. Standard rubbers degrade and harden quickly. Our premium FKM (Viton® equivalent) formulation withstands up to 200°C, maintaining its elasticity and chemical resistance to prevent dangerous high-pressure fuel or oil leaks.

Chemical Processing & Fluid Transportation Pipelines
Optimized for aggressive chemical media. When transporting acids, alkalis, or solvents, seal integrity is critical for safety and environmental compliance. The fully encapsulated FKM outer layer offers exceptional chemical inertia and corrosion resistance, protecting the inner metal core from degradation and ensuring long-term, maintenance-free sealing in harsh industrial pipeline connections.

Quality Assurance & Compliance:

• Manufactured under ISO 9001 quality management system.
• Compliant with RoHS and REACH environmental standards.
• Material test reports (SGS) and Mill Test Certificates (MTC) available upon request.

Packing /Payment/Shipping service

• Package:We provide standard cartons, pallets and wooden cases. Custom packaging is available upon request to protect goods well for different shipments.
• Payment Methods:Multi-currency settlement (CNY, USD, EUR, etc.). Multiple payment options including T/T, PayPal. Local bank transfer is available for some countries for faster transactions.
• Delivery Method:We offer international express, air freight, sea freight and railway transport. You can also appoint your own forwarder for flexible delivery arrangements.

OEM and ODM Service

At JINNAI SEAL, we understand that every application requires a unique sealing solution. We offer comprehensive OEM/ODM services, providing end-to-end customization from raw materials to final packaging. Our flexible manufacturing capabilities ensure that your exact specifications are met with precision and consistency.

Our Customization Options Include:

1. Material Selection: Choose from a wide range of premium elastomers including FKM, FFKM, VMQ (Silicone), EPDM, NBR, HNBR, and CR to suit your specific chemical and temperature requirements.
2. Precision Size: Custom inner diameters and cross-sections engineered to your exact tolerances for a perfect fit.
3. Shape & Design: Full capability to produce O-rings, oil seals, gaskets, washers, rubber balls, and complex custom molded parts based on your 3D drawings.
4. Color Customization: Various standard and custom colors available for product identification, branding, or specific industry needs.
5. Hardness Control: Precise Shore A hardness ranges tailored to different application pressures and flexibility requirements.
6. Surface Finish: Choose between matte, glossy, textured, or smooth finishes to optimize sealing performance and friction control.
7. Mold Cavities: High-precision, multi-cavity molds designed for consistent quality, tight tolerances, and high-volume production efficiency.
8. Flexible Packaging: Tailored packaging solutions ranging from individual PE bags, cartons, to sturdy wooden cases and pallets for safe global shipping.

Why Partner with JINNAI SEAL?
Whether you need custom sizes, specific specifications, or flexible packaging solutions, our engineering team is ready to bring your designs to life. We guarantee high-quality, reliable sealing performance for your most demanding projects.