Is OEM/ODM service available?

Yes, we provide OEM and ODM services, including customization from samples, designs, and flexible minor customization.

What is the function of the back-up ring?

It acts as an anti-extrusion device in dynamic sealing, protecting the main seal from high pressure and improving performance at higher temperatures.

Are the products certified?

Yes, our products come with ISO9001 and SGS certificates, ensuring high quality and compliance with international standards.

High Quality Virgin PTFE Guide Ring (GFA) Used in All Hydraulic Cylinder

Name: High Quality Virgin PTFE Guide Ring (GFA) Used in All Hydraulic Cylinder
Brand: Guangdong DEF Seals Solutions Co., Ltd.
SKU: 885344855

Guangdong, ChinaGuangdong DEF Seals Solutions Co., Ltd.

US$0.50

10-499 Pieces

US$0.20

500+ Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

PTFE

Application

Cylinder

Model NO.

GFA

Type

Shaft Seal

Performance

High Pressure

Shape

O-Ring

Standard

Standard, Nonstandard

Color

Coffee, Green, White

Size

According to Your Needs

Certificate

ISO9001, SGS

Style

Mechanical Seal

Shape (for Gasket)

Ring Gasket

Function

Dust Prevention Sealing

Transport Package

Carton

Specification

SGS

Trademark

DEF

Origin

Guangdong, China

HS Code

8484100000

Production Capacity

100000PCS/Month

Key features

High Pressure Resistance: Virgin PTFE back-up rings provide robust anti-extrusion protection for dynamic sealing in high-pressure hydraulic cylinders.

Wide Material Selection: Available in Virgin PTFE, PTFE+bronze, PTFE+carbon, PTFE+glass, PTFE+graphite, POM, and other specialized materials.

Custom Color Options: Colors can be customized to Coffee, Green, White, Brown, Black, Blue, or other specific requirements.

Flexible Sizing: Sizes are fully customizable according to your specific needs for precise fit in various hydraulic applications.

Slash Cut Service: Seals can be provided with slash cut or no cut options to meet specific installation and functional requirements.

Fast Delivery: Standard delivery takes 5-7 working days, with only 2 days required for items currently in stock.

ISO9001 Certified: Manufacturing process is certified under ISO9001:2015, ensuring consistent quality and reliability.

Company profile

Management CertificationQuality AssuranceHigh Repeat Buyers ChoiceYears of Export Experience

Guangdong DEF Seals Solutions Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 21 Years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤0.46h

AI-Powered supplier vetting

SummaryDEF Seals Solutions is a sealing and mechanical-components supplier with stated production, sales, import/export, OEM, ODM, and broad customization capabilities. It holds ISO 9001:2015 certification and reports documented finished-product inspection, supplier-service procedures, and corrective/preventive-action processes. The supplier has five production lines, six to ten quality-control staff, twelve years of total R&D engineer experience, testing equipment, and more than 20 years of export experience. However, it reports no overseas warehouse, showroom, agent, or branch, and lists zero countries for overseas services. Financial credibility cannot be assessed because the provided financial fields are recorded as zero and contain no usable supporting context. Customer-specific cases are not identified.

Supplier typeThe supplier describes itself as a sealing maker serving construction machinery and large OEMs, while its stated scope covers mechanical components, seals, hydraulic components, machine tools, automation equipment, rubber and plastic parts, and related products. This supports classification as a manufacturer and supplier of industrial components with import/export capability.

CertificationsThe supplier explicitly reports an ISO 9001:2015 certificate and states that it received ISO 9001 certification to support quality products and services. This is direct evidence of a certified quality-management system.

After-Sales capabilityThe supplier reports no overseas warehouse, showroom, agent, or branch, and lists zero countries where overseas services are offered. It has participated in HANNOVER MESSE 2025 and provides stated quotation, payment, and lead-time terms, but the evidence does not establish a substantive after-sales service network.

R&D capabilityThe supplier reports new products during the past year, ODM service, twelve years of total R&D engineer experience, and testing equipment including temperature, salt-spray, and reciprocating testing machines. It also reports no available SDK, which limits evidence for software or SDK-based development, but does not negate the documented product-development capability.

Production capacityThe supplier reports five production lines, six to ten quality-control staff, documented and uniformly followed finished-product inspection instructions, written supplier-service procedures with records, and a stated annual output above the provided threshold. These data support established production and quality-control capacity.

Customization capabilityBoth records list customization from samples, full customization, customization from designs, minor customization, and flexible customization. The supplier also reports ODM availability, providing explicit evidence of broad customization and design-manufacturing support.