Can I get a sample before ordering?

Yes, please inform DEF in advance if you require a sample.

What is the warranty or quality guarantee?

Quality and service are DEF's principles. DEF will consult and provide solutions for any issues after receiving the package.

High-Performance PTFE NBR PA Back-up Ring for Excavators

Name: High-Performance PTFE NBR PA Back-up Ring for Excavators
Brand: Guangdong DEF Seals Solutions Co., Ltd.
SKU: 767373962

Guangdong, ChinaGuangdong DEF Seals Solutions Co., Ltd.

US$1.00

10-99 Pieces

US$0.20

100+ Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Structure

Double-End

Pressure

High Pressure Mechanical Seals

Model NO.

SPGW

Speed

General Speed Mechanical Seal

Temperature

Low-Temperature Mechanical Seal

Performance

High Pressure

Standard

Standard, Nonstandard

Type

Hysraulic Seals

Balance

Balanced

Certificate

ISO9001, SGS

Color

Green, Coffee,Black

Price

Competitive Price

Business Typle

Manufacturer

Shape (for Gasket)

Hole Gasket

Application

Engineering Machinery

Transport Package

Plastic Film Inner & Cartons Outer

Specification

SGS, ISO: 9001

Trademark

DEF

Origin

Dongguan ( China)

HS Code

848410000

Production Capacity

50, 0000PCS/Year

Key features

High Pressure Resistance: Withstands up to 50 MPa pressure for demanding hydraulic applications.

Customizable Materials: Elastomers like NBR/FKM/PU and slide rings like PTFE-Bronze available on request.

Competitive Pricing: Offers competitive prices for high-quality hydraulic seal kits.

Fast Production Time: Manufacturing takes only 5 to 10 working days for custom orders.

ISO 9001 Certified: Manufacturer holds ISO9001:2015 certification for quality management.

OEM/ODM Service: Supports full customization, minor customization, and sample-based design.

Versatile Application: Suitable for excavators, mobile hydraulics, and cylinder presses.

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: ≤0.59h

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.

Product Q&A

Q:What materials are used for the seals?

Elastomers include NBR, FKM, and PU. Slide rings are PTFE-Bronze or PTFE-Carbon. Backup rings are POM or PTFE. Special materials are available on request.

Q:What is the maximum pressure rating?

The seals can withstand high pressure up to 50 MPa.

Q:What is the Minimum Order Quantity (MOQ)?

The MOQ is 10 pieces.

Q:How long does production take?

Production time is 5 to 10 working days. In-stock items can be shipped within 2 days.

Q:What payment methods are accepted?

We accept T/T (bank account), PayPal, and Western Union.