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CNC Machined PTFE Back-Up Rings for High Pressure Sealing

Name: "CNC Machined PTFE Back-Up Rings for High Pressure Sealing"
Rating: 5 (78 reviews)

Quantity:

SKU: 5093833649

Model: LG-CNC

Product Details

CNC Machined PTFE Back-Up Rings for High Pressure Sealing

Product Summary

Our CNC machined PTFE back-up rings are critical components that enable O-rings and other elastomeric seals to perform effectively in demanding conditions. Machined from pure PTFE with high-precision tolerance, these rings protect primary seals from extrusion damage under high pressure, ensuring seal integrity and longevity. Ideal for applications in chemical, petrochemical, food, pharmaceutical, automotive, electronics, semiconductor, aerospace, and defense industries.

Key Selling Points

High-Precision CNC Machining: Ensures exact dimensional stability for reliable sealing performance in critical applications.
Pure PTFE Material: Chemically inert, contamination-free, suitable for food and pharmaceutical contact.
Anti-Extrusion Protection: Prevents O-ring extrusion under high pressure, extending seal life and reducing downtime.
Fast Lead Time: Orders dispatched within 2 days as demonstrated by a verified case.
Small Order Acceptance: Flexible MOQ policy accommodates both prototype and production quantities.

Technical Specifications

Specification	Value
Material	PTFE
Tolerance	High-Precision (exact values on request)
Surface Roughness	Ra (µm) / Rz (µm) (customizable)
Visual Inspection	Smooth, no crack, no flash
Compliance	FDA, RoHS, UL available
Color	Custom

Models and Options

Available with or without glass fiber reinforcement. Custom dimensions and tolerances are supported.

Materials and Structure

Pure PTFE (polytetrafluoroethylene) is used for its excellent chemical resistance, low friction, and high temperature stability. The ring structure is precisely machined to act as a support ring, preventing elastomeric seal extrusion.

Applications

These back-up rings are essential for sealing systems in chemical processing, petrochemical, food and beverage, pharmaceutical, automotive OEM, electronics and semiconductor, aerospace and defense, and general industrial machinery.

Customization

Custom sizes, colors, and glass-fiber reinforced options are available. Surface roughness can be tailored to your application.

Case Study

For a chemical and pharmaceutical client in the UK, we supplied 20 pieces of PTFE back-up rings with high-precision tolerance. The order was dispatched within 2 days, and the rings effectively protected O-rings from extrusion under high pressure, confirming the integrity and longevity of the primary seal.

FAQ

What is the function of a back-up ring?

It prevents O-rings and elastomeric seals from extruding into the gap under high pressure, ensuring seal effectiveness and longevity.

Can you machine PTFE parts to tight tolerances?

Yes, we use CNC machining with high-precision tolerance, capable of meeting stringent specifications.

What materials are available for CNC machining?

We machine PTFE, POM, PE, UHMWPE, HDPE, PEEK, ABS, PU, PA6, PA66, and more.

Do you offer FDA-compliant materials?

Yes, our PTFE can be supplied with FDA compliance for food and pharmaceutical applications.

What is your minimum order quantity?

We accept small orders; MOQ varies by product but is flexible.

Can you provide custom colors?

Yes, color is customizable according to your requirements.

What payment methods do you accept?

We accept T/T, L/C at sight, D/P, PayPal for samples, and credit terms for established customers.

Inquiry Information

Contact Colin Lin at sales@lingorp.com or +86 18358136245 (WhatsApp) for quotes and technical consultation. We accept pre-shipment testing and ship worldwide.

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