Durable Gsd Piston Seal by Def Seals for Optimal Performance
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Product Highlights
- Customizable Dimensions: Size and color (Brown/White/Black) can be customized according to your specific requirements.
- Premium Material Composition: Constructed from PTFE combined with Bronze for enhanced durability and low friction.
- Precision Surface Finish: Features an exceptionally smooth surface with Rmax of 0.3 micrometers to minimize wear.
- Fast Production Lead Time: Standard production completed within 5 to 10 working days after payment confirmation.
- ISO 9001 Certified Quality: Manufactured under ISO 9001:2015 standards with rigorous random and visual inspections.
- Comprehensive OEM/ODM Service: Offers full customization, minor customization, and design-based customization options.
Product Attributes
- Customization
- Available
- Material
- PTFE+Bronze
- Application
- Pumps
- Model NO.
- GSD
- Type
- Shaft Seal
- Performance
- High Pressure
- Shape
- O-Ring
- Standard
- Standard
- Style
- O Ring
- Shape (for Gasket)
- Ring Gasket
- Function
- Shaft Sealing
- HS
- 848490
- Color
- Brown/White/Black
- Size
- According to You
- Transport Package
- Carton
- Specification
- ISO 7425/2 and GB/T 15242.3
- Trademark
- DEF
- Origin
- China
- HS Code
- 84840000
- Production Capacity
- 500K/Year
- Package Size
- 21.00cm * 21.00cm * 11.00cm
- Package Gross Weight
- 1.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Durable Gsd Piston Seal by Def Seals for Optimal Performance
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Product Description
The GSD profiles is a precision sealing component designed for pistons. It features a specific geometric profile engineered to ensure optimal performance. The product is characterized by its exceptionally smooth surface finish, with a maximum roughness (Rmax) of 0.3 micrometers. This fine finish minimizes friction and wear against the cylinder wall, enhancing sealing efficiency and operational longevity. The design is tailored to provide reliable leak-proof performance in demanding pneumatic or hydraulic piston applications, contributing to the overall durability and efficiency of the system.
The series is in conformity with ISO 7425/I, GB/T15242.1 and GB/T15242.3

Products Range
GSF(Piston Seal), Step Seal(Rod seal), PTFE filled with Bronze Seal, PTFE Spring Seal, Rotary Seal, PU Seal, NBR/FKM/VMQ/HNBR/EPDM O Ring, V-packing Seal, NBR Cotton/FKM Cotton, KDAS Packing, Guide Ring, Wear Strip, Phenolic Resin seal/tape, PTFE filled with Bronze Tape, Gasket.
Specification
Non Standard products are also available to be made upon your requirement.
Piston Seal

How to order from us?
1. Contact DEF's salesman to get a quotation.( by Email, Telephone, Trademessage)
2. Send DEF your asked type and detailed instruction(mateials, size, quantity,color, special requestes etc.)
3. Will send price and other details informations to you,send back Purchaser Order for approval
4. After confirm order and timeline, DEF'll start production procedure once receive payment.
5. If require sample, please inform DEF in advance.
6. 5~10 working days for making seals.
7. Quality Checking, DEF can send bulk order photo for approval before packing, if you need.
8. Packing
9. Order release for shipping.
10. Any issue,please contact DEF after receive package. DEF'll invest and consult with you for solution.
11. Quality and Service are DEF principle.
Please feel free to contact us if you need more details about our factory and products.
| Name | Hydraulic seals |
| Sliding speed[m/s] | 15 |
| Temperature [° C] | -45...+260 |
| Pressure Pr: N/mm² (Max) | 60 |
| Medium | Mineral oil based hydraulic fluids, barely flammable hydraulic fluids, water, air and others. |
| Material | PTFE+bronze/carbon, PU, etc. |
| Color | coffee, green, grey green,red |
| Advantages | 1. Suitable for dry use (depending on the load). 2. Very good temperature resistance. 3. Compatible with most of the fluids in contact. 4. Easy assembly, low friction coefficient. |
| Application | hydraulic cylinders, Pneumatics, Presses Injection moulding machines, Excavator Machine tools |
| Certificates | ISO9001-2015, SGS |
| MOQ(M) | 10 |
| FOB | FOB Shenzhen |
| Method of payment | T/T (bank account, paypal,western union) |
| Delivery time | 5 to 7 working days, 2 days for in stock |
| Supply ability | 5000000Pcs/Month |
| Packaging | plastic film for inner packaging and cartons for outer packaging |
| Export market | South Asia, Southest Asia, Europe, South America, North America, Africa, Middle East, Ausrialia |






About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR252753". Items marked "" are certified.
Company Profile
Guangdong DEF Seals Solutions Co., Ltd. is a leading seals original manufacturer carrying with more than 20 years professional experience, focus on full series hydraulic seals and PTFE component seals, which including guide rings and Spring Energized Seals, as well as CMRD (Custom Made, Rapid Delivery) urethane and rubber seals.
As a high-performance seals maker, DEF Seals Solutions operates a state of the art manufacturing facility, including 10, 000 sq. Meters workshop, 1, 000 sq. Meters stable temperature/humidity PTFE workshop, CNC machine, NC sinter, 2000T press, NC urethane casting machine and exclusive urethane vertical NC lathe, which machining range up to 1500 mm. These have given us a leading edge in the sealing industry.
DEF Seals Solutions has developed to be one of the largest sealing maker and to supply all facets of industry from construction machine to large OEM's.
DEF Seals Solutions received ISO 9001 certification which allows us to support the growing and ever changing customer demand with supplying high quality products and service across the world.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory
- Address
- Dinghao Automation Incubators, Jinfu Road 17, Liaobu Town, Dongguan, Guangdong, China
-
Plant Area
- 5600 square meters
-
Number of Employees
- 135
-
Registered Capital
- 5,000,000 RMB
-
Terms of Payment
- LC, T/T, Western Union
-
International Commercial Terms(Incoterms)
- FOB, CIF, EXW, CFR
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays, one month -
Nearest Port
- Shenzhen Port
-
Minimum Order Quantity
- 10 Pcs
-
Supply Chain Partners
- 20
Our Production Capability & Technical Expertise
-
Main Products
- Seal, PTFE Strip, U Cup, Spring Energized, Urethane Seals, Guide Ring, PU Seals, Hydraulic Seals, Seals, CNC Lathe Cut Seals
-
Production Lines
- 5
-
Production Machines
- Pressing Machine, Oven, CNC Machine, Lathe, Milling Machine, 2D Measuring Instrument, Nitrogen Gas Spring Testing Machine, High And Low Temperature Testing Chamber, Salt Spraying Test Machine, Reciprocating Testing Machine, Friction Testing Machine, Tensile Tester, Cooper Powder Particle Size Distribution Analyzer, Cooper Powder Tap Density Tester
-
QA/QC inspectors
- 11 people
-
Inspection Type for Finished Products
- Random inspection(Function inspection & Visual inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Full Customization, Customization from Designs, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 12 people
-
Traceability of Raw Materials
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2004-02-13
-
Export Year
- 21 Years
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, Africa, East Asia(Japan/ South Korea), Australia, Domestic
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 6
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015
-
Cooperated with Fortune 500
- Yes
FAQ
- What materials are used for the GSD Piston Seal?
- The primary material is PTFE combined with Bronze. Other available materials include PU, carbon, and various elastomers like NBR, FKM, and EPDM.
- Can the seal size and color be customized?
- Yes, the size is available according to your requirements, and colors include Brown, White, Black, Coffee, Green, Grey Green, and Red.
- What is the minimum order quantity (MOQ)?
- The minimum order quantity is 10 pieces.
- How long does it take to produce a custom order?
- Production typically takes 5 to 10 working days. For in-stock items, delivery can be as fast as 2 days.
- What payment methods do you accept?
- We accept T/T (bank account), PayPal, Western Union, and LC (Letter of Credit).
- Do you offer samples before bulk production?
- Yes, samples are available upon request. Please inform us in advance if you require a sample.
- What certifications does the product hold?
- The product conforms to ISO 7425/I, GB/T15242.1, and GB/T15242.3 standards, and the factory is ISO 9001:2015 certified.
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